I want to give you credit for giving me enough information to start using solar. I now have 3 power box that I use for drill and other tools and for laptops and computers. I trusted your opinion because you are a survivor like me. i was born on an island in the Caribbean and I am always looking for ways to cut down on bills. Thank you for posting and sharing your ideas with us. keep up the good work. I wish there were more like you who would share the truth and only the truth. if we want to survive hee we better share our ideas.
@@dummkompf 10440 has really small capacity, 3xAAA NiMhs would be best way to go without modifying anything. 3x10440 would be a bit better (if we take into account 900mAh NiMh and 350mAh 10440, that's 3240mWh for AAA and 3885mWh for 10440) but you would have to rearrange slots. I've actually used pouch style lithiums in these typed of flashlights with very little mod, you could fit 1000mAh battery inside very easily, you would just have to cut some plastic away from battery holder.
I just got my freebie light recently and was thinking how to convert to 18650s since I've got a bunch. I've used battery holders in the past, but this is a great idea since it looks built in. I'll probably use a TP4056 charger module though (a power bank module would be even better!). Also, I'm pretty sure there's enough room so that you can fit three (3) 18650s instead of just two. By the way, the newer lights have a very nice LED module now. Another great video. Thanks.
Awesome job!! I did the same thing with the same light 3 years ago using a old cell phone battery and the battery and charge circuit to fit inside with a hole for charging with a mirco USB.. Mine last a long time but yours would last 10 times longer.. Too cool thanks for sharing!!
Nice V, I did same with craftsman led wand. Replaced the NiCd batteries with 1 18650, used tp4056 for charging I connected it to the factory charging port. Works great. Thanks for video V.
Of all the Asian accents, I would have to say that the Vietnamese accent is the most annoying to my ears... Chinese / Taiwanese is slightly better, but I think Japanese seems less harsh... Thai would be somewhere between Chinese and Japanese though... NYer, Boston, and "Ebonics" accents are also particularly irritating...
I did a slightly different hack on mine... On the underside of the battery compartment, I used a short piece of small gauge wire and solder to jump each side's terminals to make continuous bars, then used 3X 4.2v 10400 Li-ion (AAA) rechargeable batteries in parallel to power the light. Wired like this it can use 1 to 3 Li-ions. The disadvantage relative to your hack is less runtime; the advantage is no increase in form factor. When I find the right connectors, I will add a charge port. Nicer would be to add an internal charge circuit...
Garys over here following in young Eminems footsteps and shytt! Strapped w/ that short piece, singing in the small gay Choir, as a young soldier. Every week getting jumped in the East Side terminals, and using that as inspiration for later gonig on to make CONTINUOUS bars! Great Em line too btw! "all i have is darkness, Lord cant you tell. No clue why, missed my flight no way off this one way carrosel.. blacked out, high? (no doubt), smoked flower, cant fight? (knocked out).. waking up with the knowldge, in a parallel, to power the light".. Keep powering that light of yours brotha! Also Im Dyslexic btw, might read/write a few letters wrong occasionally 😉 Fun Fact: in an interview Em states that in the parallel universe the knowledge to power his light was actually found written on a bapkin..😅
I have an orange one of these and I modded it to run off USB power. I just soldered a USB cord to the wires coming from the battery terminals and ran it out the case with a small notch cut in the case. I can plug it into USB ports, power banks, car chargers.
I have this EXACT SAME FLASHLIGHT except it’s red and I got it at a gas station. I might do this because it’s been sitting on my desk disassembled without batteries and I don’t wanna get AAA batteries (I already have 18650s laying around). Thanks! Edit: Ended up using a Samsung li-ion battery since it fits (with a few adjustments to the plastic). The blue resistor burned when I first put the battery in but that was an easy fix.
You had to use 1S BMS module. This will protect the batteries against over charge and over discharge. BMS modules are vital. Lithium batteries are dangerous.
Looks like the same battery that's in the solar driveway light $10.00 and the pocket power pack $5.00. All you need is a nice sunny window seal to set your rechargabe driveway light on and a wired in anelog headphone jack for a small sun charging jack and switch over system. Then you can charge those type batters all year long for free. Also back pack and camping friendly. Just some more cool ideas !
Use a dead light bulb (the energy saving things/LED's/plastic) and a glass/plastic thing with lid. Cut the dome off. Glue the dome of the lightbulb to the lid and make a hole for the wires. Add LED's. Add resistors, maybe. Add charge boards. Add wires/holes/hooks/holders inside. Enjoy.
I did the one that looks like a wall switch. I can't remember if I did this one. It may be laying around somewhere. It's fun that great minds think alike!!
When I pulled up this video I was looking at a HF light on my bench. Now I had just ordered five power banks that take two 18650 cells. . My thought is to use batteries from garden lights as they are aaa in the ones I have. Then use a solar panel to charge them. As well as use a power bank in a pinch. Or just use a big flashlight
You should also put a speaker in it and also make it Bluetooth, and on the reverse side make it a cellphone, and on the side a garage door opener and on the other side make a hidden compartment for a spare house key, did I forget anything?
Nice video good idea you always come out with some good ideas like your channel that's why I been a subscriber soon as I seen your ideas keep them good videos and ideas coming 👍🏻
I love your videos, projects and diy battery packs using laptop batteries. Been watching for quite sometime. Tend to noticed you shy away from using bms for simplicity. I use to be the same way and use balance charge. Now I use protection 😅 mainly for over discharge which is bad for the cells. Thanks for this cool project idea. I plan to convert this exact same flash light. Tired of this dying on me. But I plan to use a usb micro charger and control module like a TP4056 or similar. It's cleaner look, easy charging, and over discharge protection down to 2.5v
@@andrewfong4216 Nothing ships that cheaply to Canada, let alone including the cost of the items. Also, whatever the cost, the shit won't be here for 3 months.
i'm gonna try this with my 6x D Cell battery powered water pump. It came with my Mr. Heater BOSS XB-13 propane camp water heater. I think will go hybrid 2x 18650 batteries OR 1 6v usb plug
Nice mod, these lights are great, but what is MOST annoying is there is not a simple on/off switch, the little light at the end is useless, so you always have to hit the button twice to turn it on/off. So I hack mine (when I collect enough to do many at once), to remove the little led and make the switch so it always just turns on/off the main light.
Agree SOOOOO annoying just about every decent led flashlight/headlight nowadays has the multi mode BS.....how about just ON/OFF The last headlight I bought has 4 modes high,mid,low,flash WTF FOUR CLICKS TO TURN IT OFF
@@walkow8297 yep, I took one of those apart to try and fix it, and guess what? It is some kind of software/chip that detects the button so it is impossible to easily fix it, at least to get it to not be 100% on, which drains the battery super quick, the second level on is where it should be.
NO BMS or PCB!!! I Could excuse newbie guys but you’re expert on lithium I don’t know why you missed the BMS part? Used to love your videos but dislike for this one...hopefully you make it right next time bro.
I was about to do this to mine, but mine is not a Harbor Freight magnetic flashlight, but a fact similarly one, but I'm going to use a smaller 18650 battery
Why didn't you just cut the inner plastic which holds the spring tabs for the batteries to fit the 18650s sideways then solder wires directly to the battery since you arent going to replace them. You could have even just removed the inner plastic completely and soldered the wires from spring tabs to the batteries and glued some foam to hold the batteries in position. Also cut a hole to mount a charger socket. A little bit of rewiring would make this more professional and slimmer profile
Exactly what I was thinking!!! He needs to slow down and think things over for a sec. I ain't got all those fancy tools but sure I could come up wit something lot more compact then that. Might even get it in my pocket. Not like that thing. Would need a backpack for that thing. haaa
I mistakenly thought he was going to show us how to hook up 18,650 AAA batteries to the flashlight at the same time! That was sort of a letdown for me as I have exactly 18,650 AAA batteries on hand but didn't want to bother with the whole changing them out each time as needed!
Why not cut out some of the plastic and slide a 2x18650 holder in there? I would rather keep it with replaceable batteries and charge them in my Nitecore charger.
Ordered 3 items from Harbor Freight, including one of these lights. Tracking numbers were not useful. Trying to contact using both phone and e-mail on several occasions were unsuccessful. Received one of the ordered items, still waiting for the rest of the merchandise??? No way to contact them. Will save myself some grief and NOT order from Harbor Freight again.
Yes. Harbor Freight specs says 48 hours of run time on the AAA. An 18650 is typically 3 times the capacity of 3 AAA put together in series. I have 2x 18650 so it's about 6 times the capacity. That's a whopping 12 days of run time! :D
It's going to be brighter and it's going to be more volts because 3 Triple A batteries in that light Are only to around 3 volts because only two of them are in series which equals 3 votes... you will be much brighter...
I've looked at 2 of the ones that I have that are currently disassembled and they appear to be wired with all 3 in series... It wouldn't make sense to have 2 of them in parallel and the other in series since the limit of your power would be based on the capacity of the single battery... Also, one of the things about LEDs is that they are a bit picky on the voltage that you give them... It only takes a bit too much for you to get a burned out LED and it will happen so quickly and without a flash, so you probably won't even notice it happening... With a white LED, you will probably be looking at a Vf (forward voltage) of around 3.3V with a max of around 4V, followed by a burned out LED soon thereafter...Since the AA cells an produce at least 4.5V when connected in series (when new), there would have to be some sort of circuitry inside the light to reduce the power... This could be as simple as a small resistor to drop the voltage and limit the current... Ideally, there would also be some circuitry to compensate for the lower voltage on the batteries as they get depleted (perhaps similar to a "joule thief", but considering the price of these lights, I would be surprised if that was the case... Assuming that you want to run the LED at 20 mA, then if it has a 3.3V Vf and you have a 4.5V supply voltage, you would need a 60 ohm current limiting resistor. There are various LED resistor calculators online...
Can you give me the model number/part number to that USB lithium battery 3.7v charger. Thank you. Good video. Make more from harbor freight products. Good job.
Or you could buy something like 10 pcs 3.7V 1000mAh LiPo Polymer Rechargeable Battery For Mp3 GPS USB Pen 102535 from eBay of around $22 and put 2 batteries inside and the case would close right and these will also charge to 4.2V. Yes it's not free but it's use-full. I bought some and made 9V rechargeable batteries using a Micro USB 3.7V 18650 Lithium Li-ion Battery Charger Module Boost Step up 4.3V to 27V output and some heat shrink tube.
Pin NP-BK1 cung chi la Li-ion cung giong nhu 18650 cho nen thay the duoc. Hai cai giong nhau. Chi co cai khac la 18650 pin to hon nen xai duoc lau hon.
They vary... I usually have a couple stuck to the side of my freeze and they usually stick to it, some more than others... I had one though that as soon as I put in on the metal side, it started slowly sliding down the freezer side...
No thanks. Its NOT jard to replace 3 trip A batterys as opposed to hacking the crap out of one. They are FREE to begin with. On top of that you still have to charge them. I see NOTHING practical about what you did. I like those lights and get a huge pack of batterys for cheap enough. Generally, they last a long, long time too.
LOL. You have to buy something to get those free batteries, mate. And those batteries are the worst thing you can do to your device. Put them in and a couple weeks later you'll see it leaking battery juice out and corrode the terminal. Next thing you know, your device doesn't work any more because the terminals are no longer conductive. And why do you need to buy a spot welder just to make a flashlight? Are spot welders for one time use only? Also, in case you didn't know, there are more than one way to connect 2 batteries together without a spot welder.
This video is for those of us who have recovered more 18650s for free or very low cost and are looking for more applications for them. I appreciate his videos.
Lol seems like slot of work for something you can get free every time you buy something cheap plus you can get AAA battery's for a very cheap price at H.F lol. Still kinda cool though I guess. I've got a bucket full of these light lol. There pretty bright to be what they are.
“you can’t even tell it’s been hacked”
lol
AAA batteries are cheap
Why bother? I have better things to do.
Nice!
Like the Chinaman always said "cheap things not good and the good things not cheap".
I want to give you credit for giving me enough information to start using solar. I now have 3 power box that I use for drill and other tools and for laptops and computers. I trusted your opinion because you are a survivor like me. i was born on an island in the Caribbean and I am always looking for ways to cut down on bills. Thank you for posting and sharing your ideas with us. keep up the good work. I wish there were more like you who would share the truth and only the truth. if we want to survive hee we better share our ideas.
Thanks Dart.
LOL
Of course you watch ufo videos
hey....I love this guy...I Love all his works.
Take a soder gun melt out the plastic battery holder then you will have room for the bigger batteries and cover will fit all the way
טיפש
or just use a 10440 in one of the original slots, but then it's not free
@@dummkompf 10440 has really small capacity, 3xAAA NiMhs would be best way to go without modifying anything. 3x10440 would be a bit better (if we take into account 900mAh NiMh and 350mAh 10440, that's 3240mWh for AAA and 3885mWh for 10440) but you would have to rearrange slots.
I've actually used pouch style lithiums in these typed of flashlights with very little mod, you could fit 1000mAh battery inside very easily, you would just have to cut some plastic away from battery holder.
I just got my freebie light recently and was thinking how to convert to 18650s since I've got a bunch. I've used battery holders in the past, but this is a great idea since it looks built in. I'll probably use a TP4056 charger module though (a power bank module would be even better!). Also, I'm pretty sure there's enough room so that you can fit three (3) 18650s instead of just two. By the way, the newer lights have a very nice LED module now. Another great video. Thanks.
Awesome job!! I did the same thing with the same light 3 years ago using a old cell phone battery and the battery and charge circuit to fit inside with a hole for charging with a mirco USB.. Mine last a long time but yours would last 10 times longer.. Too cool thanks for sharing!!
Nice V, I did same with craftsman led wand. Replaced the NiCd batteries with 1 18650, used tp4056 for charging I connected it to the factory charging port. Works great. Thanks for video V.
Accent never gets old.
Indeed
It's Kyle from bitwits other hobby
Of all the Asian accents, I would have to say that the Vietnamese accent is the most annoying to my ears... Chinese / Taiwanese is slightly better, but I think Japanese seems less harsh... Thai would be somewhere between Chinese and Japanese though... NYer, Boston, and "Ebonics" accents are also particularly irritating...
Great ideal, I have a lot of those lights. I will give it a try.
I did a slightly different hack on mine... On the underside of the battery compartment, I used a short piece of small gauge wire and solder to jump each side's terminals to make continuous bars, then used 3X 4.2v 10400 Li-ion (AAA) rechargeable batteries in parallel to power the light. Wired like this it can use 1 to 3 Li-ions.
The disadvantage relative to your hack is less runtime; the advantage is no increase in form factor.
When I find the right connectors, I will add a charge port. Nicer would be to add an internal charge circuit...
Garys over here following in young Eminems footsteps and shytt! Strapped w/ that short piece, singing in the small gay Choir, as a young soldier. Every week getting jumped in the East Side terminals, and using that as inspiration for later gonig on to make CONTINUOUS bars! Great Em line too btw! "all i have is darkness, Lord cant you tell. No clue why, missed my flight no way off this one way carrosel.. blacked out, high? (no doubt), smoked flower, cant fight? (knocked out).. waking up with the knowldge, in a parallel, to power the light".. Keep powering that light of yours brotha! Also Im Dyslexic btw, might read/write a few letters wrong occasionally 😉
Fun Fact: in an interview Em states that in the parallel universe the knowledge to power his light was actually found written on a bapkin..😅
I have an orange one of these and I modded it to run off USB power. I just soldered a USB cord to the wires coming from the battery terminals and ran it out the case with a small notch cut in the case. I can plug it into USB ports, power banks, car chargers.
Very nice!
I am going to try adding a mouse tail to mine like you did. I was worried about too much voltage. The 5v from the usb didn't fry it?
@@christopherf8160 5v usb is ok for this light. I did it.
You made that piece of HF garbage useful and dual purpose! Nice!
I have this EXACT SAME FLASHLIGHT except it’s red and I got it at a gas station. I might do this because it’s been sitting on my desk disassembled without batteries and I don’t wanna get AAA batteries (I already have 18650s laying around). Thanks!
Edit: Ended up using a Samsung li-ion battery since it fits (with a few adjustments to the plastic). The blue resistor burned when I first put the battery in but that was an easy fix.
I could listen to your accent all day.
you are really innovative in your practices, thank you for making us all better!best regards !
You had to use 1S BMS module. This will protect the batteries against over charge and over discharge.
BMS modules are vital. Lithium batteries are dangerous.
Looks like the same battery that's in the solar driveway light $10.00 and the pocket power pack $5.00. All you need is a nice sunny window seal to set your rechargabe driveway light on and a wired in anelog headphone jack for a small sun charging jack and switch over system. Then you can charge those type batters all year long for free. Also back pack and camping friendly. Just some more cool ideas !
Use a dead light bulb (the energy saving things/LED's/plastic) and a glass/plastic thing with lid. Cut the dome off. Glue the dome of the lightbulb to the lid and make a hole for the wires. Add LED's. Add resistors, maybe. Add charge boards. Add wires/holes/hooks/holders inside. Enjoy.
I did the one that looks like a wall switch. I can't remember if I did this one. It may be laying around somewhere. It's fun that great minds think alike!!
Good idea.Very useful.
When I pulled up this video I was looking at a HF light on my bench.
Now I had just ordered five power banks that take two 18650 cells. . My thought is to use batteries from garden lights as they are aaa in the ones I have. Then use a solar panel to charge them.
As well as use a power bank in a pinch.
Or just use a big flashlight
Great hack man. I have got a few of these lights. And I like "un-usefull". You coined a new word.
Gonna do this for my camping gear stuff.
Torch will b great at night🤣....but also bright enough to interrogate any bad guys 😎
:D
You really only need a single decent 18650 battery and you still get more than 5x the runtime on a charge.
You should also put a speaker in it and also make it Bluetooth, and on the reverse side make it a cellphone, and on the side a garage door opener and on the other side make a hidden compartment for a spare house key, did I forget anything?
Nope. You pretty much cover everything. :D
And no one would ever steal it because it looks like a free light.
I would like to see more of that welding machine u used a second there to spot weld the battery
I got a full review video on it a couple months back. Here it is: ua-cam.com/video/7UUte7ze850/v-deo.html
Fantastic video and I really enjoy your voice. Going to try this hack. Greets from Finland.
Nice video good idea you always come out with some good ideas like your channel that's why I been a subscriber soon as I seen your ideas keep them good videos and ideas coming 👍🏻
You are very clever man 👍👍👍👍
Please tell me more about charging your batteries as I do not want to over charge.
Nothing like a $20 shine on a $5 pair of boots.
These have some pretty great LEDs if your just gonna throw them away might as well take em
I'll take them too! Can we split? :D
I would use a tp4056 for charging
i did exactly that
Nice job
I would cut out the inner plastic andmake battery cavity instead of the foam sandwich. Drill mount a female power socket for recharging.
I have more of those flashlights than I know what to do with. Still always interesting to see what people do with their time.
Like use their time to watch youtube videos about flashlights 🤔
Hey That’s pretty sweet. You made heavy duty version. You should put charging port part number below. Nice video
Thanks!! I love your videos
But how will you be able to recharge the replacement cells ?
Thanks much.
I love this guy....
Great job thanks for sharing,just subbed.
Simple and beautiful. 👍
very clever!
I love your videos, projects and diy battery packs using laptop batteries. Been watching for quite sometime. Tend to noticed you shy away from using bms for simplicity. I use to be the same way and use balance charge. Now I use protection 😅 mainly for over discharge which is bad for the cells.
Thanks for this cool project idea. I plan to convert this exact same flash light. Tired of this dying on me. But I plan to use a usb micro charger and control module like a TP4056 or similar. It's cleaner look, easy charging, and over discharge protection down to 2.5v
And these control modules are tiny and cost less then $1
@@Lowegy Nothing "costs less then (sic) $1" unless you're in Shenzhen to pick it up in person.
@@fun_ghoul just buy a 10 pack for $6 shipping included and hack everything in sight!
@@andrewfong4216 Nothing ships that cheaply to Canada, let alone including the cost of the items. Also, whatever the cost, the shit won't be here for 3 months.
I would have cut out enough plastic that the lb would sit flush or at aaa level at least...
cut the black outside ring of extra light to make an extension ring instead of foam and tape.
Big thumbs up for the laugh.
Great work!
why are you not using a bms for the batterys?
does led board not gets hot?
i'm gonna try this with my 6x D Cell battery powered water pump. It came with my Mr. Heater BOSS XB-13 propane camp water heater. I think will go hybrid 2x 18650 batteries OR 1 6v usb plug
In this post 9/11 world, the first person who sees this is going to freak out.
Cool video man！
Can I get the brand, model & price of the battery solder (2:42)?
Modern day Mcgyver
Thanks. I feel really stupid now, but in a useful way.
Nice mod, these lights are great, but what is MOST annoying is there is not a simple on/off switch, the little light at the end is useless, so you always have to hit the button twice to turn it on/off.
So I hack mine (when I collect enough to do many at once), to remove the little led and make the switch so it always just turns on/off the main light.
Agree SOOOOO annoying just about every decent led flashlight/headlight nowadays has the multi mode BS.....how about just ON/OFF
The last headlight I bought has 4 modes high,mid,low,flash WTF FOUR CLICKS TO TURN IT OFF
@@walkow8297 yep, I took one of those apart to try and fix it, and guess what? It is some kind of software/chip that detects the button so it is impossible to easily fix it, at least to get it to not be 100% on, which drains the battery super quick, the second level on is where it should be.
Just notch the black plastic so the 18650’s fit inside the case (or almost)
Is this worth the trouble?
Who else has a spot welder for batteries? NOT ME
that was awesome !!!
LED sandwich.
Why not put a car battery
al victoria: Wrong voltage....otherwise....
NO BMS or PCB!!! I Could excuse newbie guys but you’re expert on lithium I don’t know why you missed the BMS part? Used to love your videos but dislike for this one...hopefully you make it right next time bro.
If you watch my videos then you should know that I do NOT use BMS on almost anything. So you didn't watch other videos then. :D
He uses an external tp4056 on and xd60 connector. With 2 cells in parallel, just us two matched batteries.
Don't even have to be matched since they are in parallel. Just use a hobby charger. No bms needed.
What willl prevent the battery from overdischarging?
I was about to do this to mine, but mine is not a Harbor Freight magnetic flashlight, but a fact similarly one, but I'm going to use a smaller 18650 battery
Why didn't you just cut the inner plastic which holds the spring tabs for the batteries to fit the 18650s sideways then solder wires directly to the battery since you arent going to replace them.
You could have even just removed the inner plastic completely and soldered the wires from spring tabs to the batteries and glued some foam to hold the batteries in position.
Also cut a hole to mount a charger socket.
A little bit of rewiring would make this more professional and slimmer profile
Exactly what I was thinking!!! He needs to slow down and think things over for a sec. I ain't got all those fancy tools but sure I could come up wit something lot more compact then that. Might even get it in my pocket. Not like that thing. Would need a backpack for that thing. haaa
@Ken I would love to see a video with your version.
I mistakenly thought he was going to show us how to hook up 18,650 AAA batteries to the flashlight at the same time! That was sort of a letdown for me as I have exactly 18,650 AAA batteries on hand but didn't want to bother with the whole changing them out each time as needed!
Why not cut out some of the plastic and slide a 2x18650 holder in there? I would rather keep it with replaceable batteries and charge them in my Nitecore charger.
Sounds like you enjoy spending money.
@@fun_ghoul
I just hate having to keep things plugged into something to charge. So nice to be able to swap out batteries and get charged instantly.
Good one mate!
Or get rechargeable aaa batteries which are safer
Ordered 3 items from Harbor Freight, including one of these lights. Tracking numbers were not useful. Trying to contact using both phone and e-mail on several occasions were unsuccessful. Received one of the ordered items, still waiting for the rest of the merchandise??? No way to contact them. Will save myself some grief and NOT order from Harbor Freight again.
Cool, I'll bet run time is in days?
Yes. Harbor Freight specs says 48 hours of run time on the AAA. An 18650 is typically 3 times the capacity of 3 AAA put together in series. I have 2x 18650 so it's about 6 times the capacity. That's a whopping 12 days of run time! :D
Ill give u props for the video but this isnt really a hack it's more of a rewire
I will try this...
I won't
You dam Asians are smart.
One 18640 battery was enough
i probably wouldnt use the foam though , if the foam is flamable like most are
It's going to be brighter and it's going to be more volts because 3 Triple A batteries in that light Are only to around 3 volts because only two of them are in series which equals 3 votes... you will be much brighter...
I've looked at 2 of the ones that I have that are currently disassembled and they appear to be wired with all 3 in series... It wouldn't make sense to have 2 of them in parallel and the other in series since the limit of your power would be based on the capacity of the single battery... Also, one of the things about LEDs is that they are a bit picky on the voltage that you give them... It only takes a bit too much for you to get a burned out LED and it will happen so quickly and without a flash, so you probably won't even notice it happening... With a white LED, you will probably be looking at a Vf (forward voltage) of around 3.3V with a max of around 4V, followed by a burned out LED soon thereafter...Since the AA cells an produce at least 4.5V when connected in series (when new), there would have to be some sort of circuitry inside the light to reduce the power... This could be as simple as a small resistor to drop the voltage and limit the current... Ideally, there would also be some circuitry to compensate for the lower voltage on the batteries as they get depleted (perhaps similar to a "joule thief", but considering the price of these lights, I would be surprised if that was the case...
Assuming that you want to run the LED at 20 mA, then if it has a 3.3V Vf and you have a 4.5V supply voltage, you would need a 60 ohm current limiting resistor. There are various LED resistor calculators online...
If that's the way you like it. I don't. Good work, but the tape would get sticky. Not for me.
Did you click on the thump up for yourself, too? :D
@@vuaeco Ha ha. Not trying to piss you off, but it was too big and damn I have never seen those batteries before, much less get them free.
Can you give me the model number/part number to that USB lithium battery 3.7v charger. Thank you. Good video. Make more from harbor freight products. Good job.
TP4056
Pretty smart guy
Could just wire in a 12v to 4.5v cell phone charger or 12v to USB for a stationary light.
$1 at dollar tree.
Or you could buy something like 10 pcs 3.7V 1000mAh LiPo Polymer Rechargeable Battery For Mp3 GPS USB Pen 102535 from eBay of around $22 and put 2 batteries inside and the case would close right and these will also charge to 4.2V. Yes it's not free but it's use-full. I bought some and made 9V rechargeable batteries using a Micro USB 3.7V 18650 Lithium Li-ion Battery Charger Module Boost Step up 4.3V to 27V output and some heat shrink tube.
Very well my Vietnamese friend
Xin hỏi là ,máy ảnh mình dùng pin( NP-BK1) 3.6V 1000 mAh, Li-on ,mình có thể dùng pin 18650 thay tế không ? nếu không thì nên dùng pin nào thay thế ?Thanks
Pin NP-BK1 cung chi la Li-ion cung giong nhu 18650 cho nen thay the duoc. Hai cai giong nhau. Chi co cai khac la 18650 pin to hon nen xai duoc lau hon.
@@vuaeco ok ,cám ơn nhiều ,lúc trước có thấy anh chế cách làm pin cho canon sx150 ,mình cũng sẽ làm giống như vậy ,bởi vì pin NP-BK1 bây giờ khó tìm .Thanks
The magnet on the newer ones are not very strong.
They vary... I usually have a couple stuck to the side of my freeze and they usually stick to it, some more than others... I had one though that as soon as I put in on the metal side, it started slowly sliding down the freezer side...
I never knew they batteries were replaceable I just toss it when it's dead and get more free ones.
M I wish you would have showed how you soldered the wires used to charge it with
I made a whole video about it: ua-cam.com/video/_CR8Mg7Lo98/v-deo.html
No thanks. Its NOT jard to replace 3 trip A batterys as opposed to hacking the crap out of one. They are FREE to begin with. On top of that you still have to charge them. I see NOTHING practical about what you did. I like those lights and get a huge pack of batterys for cheap enough. Generally, they last a long, long time too.
HF also has free batteries with coupon, if I bought the spot welder how much would that cost vs buying batteries. This hack makes no economical sense.
LOL. You have to buy something to get those free batteries, mate. And those batteries are the worst thing you can do to your device. Put them in and a couple weeks later you'll see it leaking battery juice out and corrode the terminal. Next thing you know, your device doesn't work any more because the terminals are no longer conductive. And why do you need to buy a spot welder just to make a flashlight? Are spot welders for one time use only? Also, in case you didn't know, there are more than one way to connect 2 batteries together without a spot welder.
He already has free Lithium batts around the house. A lot longer flashlight time, optional phone charger..well worth hack
This video is for those of us who have recovered more 18650s for free or very low cost and are looking for more applications for them. I appreciate his videos.
No BMS? No battery status indictor? What when your batteries go flat en get fucked up? :-)
Lol seems like slot of work for something you can get free every time you buy something cheap plus you can get AAA battery's for a very cheap price at H.F lol. Still kinda cool though I guess. I've got a bucket full of these light lol. There pretty bright to be what they are.
Put those AAA HF batteries in there and a couple weeks later it'll leak battery juice and corrode all of the battery terminals on your device.
@@vuaeco I use them all the time and I've never had problems with them.
You need a 3D printer and this would be bad ass . Sorry I'm going to steal your idea and 3D print the parts
Way to go Juan!
Yo what is the name of that accent. I wanna learn it.
I used 3p on mine
Nice!
If you are using 18650 I suggest using lower capacity， cause it‘s more cheap then others， My 18650 1200mah only 0.3USD per pcs
Wow that's cheap! That translates into $67/KWh. Very cheap! :D
@@vuaeco www.xxshldy.com/ My website