Replace lead-acid battery with Lithium
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- Опубліковано 11 жов 2024
- Can we replace the lead-acid battery in the Omni rechargeable light with a lithium-ion 18650 or lithium-polymer battery?
Although the existing lead-acid battery is charged to a similar voltage as lithium batteries, we cannot simply swap the battery and hope for the best.
We need to use a special charge board which is designed for charging lithium batteries. For example one which uses the TP4056 chip.
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The TP4056 should work fine with the LiPo batttery, they charge to 4.2v. Default charge current is 1 amp, you can adjust that by adding a different resistor. The TP4056 chip is a bit heat sensitive, likely the hot glue did it in.
Okay cool, that's what I thought when I read through the spec sheet but I wasn't 100% sure because I couldn't find many people talking about charging lithium polymer batteries with the TP4056. I guess the heat sensitivity is why so many places use that cold caulk instead of hot glue.
You showed what to do and what not to add well. Still a success haha
I have that one.
Atleast I knew we need that board before converting to lithium. Thanks!
Nice idea and hack, even though it ended up failing.
I think it would work just fine if you just directly replace the lead acid with lithium 18650.
if you are not sure just purchase NCR18650B with chip embed already on the negative bottom plate.
Did you know that so many youtubers venturing on electronics who don't really know exactly what they're doing end up indirectly burning other people's houses?
Its ok bro. Im looking forward to the next video and I hope the Lithium battery will be successful..
Thanks :)
Can i use Mobile battery bms instead of TP4056
You should rip that battery management off the top of the battery and just let the one on the board do the job. Also I've noticed those boards have no reverse voltage protection it's easy to blow one if leads get reversed even for a second.
Can you get those 18650 cells with a built in micro usb charge connector in philippines
I believe they have a charge controller in a round circuit board at one end of the barrel
+Sibat 777 I've never seen them being sold here but I know lumintop make one so I could probably get one for review.
Usually the Protektion for the cell is missing, you can moverdraw or undervolt them.. This PCB is safer
Does it needs BMS for the battery?
Always interesting, what if you did a video on your all-time favorite gadget, mine would be my trusty Iphone4 from 2009, still in service, newer even changed the battery, i always tried charged from less than 10% all the way up to 100% think that`s the trick on those.
Oh nice! I struggle to keep my phones for that long because I always drop them. But this time I invested in a decent OtterBox case to protect the phone. I'm not sure what my favorite gadget would be. perhaps it would be the rechargeable USB fan because they're just so useful in a hot country. Otherwise it's whatever phone I'm currently using :P
hehe, in my area a recharged heated pair of socks would be awesome :)
can you use that old board instead of that tp4056 module?
I doubt it. Because it's designed for a lead acid battery.
Maybe it would be okay if the lipo cell that you install has a protection board built in.
Although personally I'd recommend replacing the board.
Or even better, just don't buy this light in the first place. There's so many alternatives that you can buy online, that come with lithium batteries.
I noticed also when I was playing around with LED strips that using hot glue causes shorts or something (maybe this only happens while it is still hot)... . Terrible isn't it )))
Hi sir I need one of those 4v battery could you give a link for the product? Thank so much 🙂
Do you have any numbers on that SLA battery?? Im very curious about it.
is hot glue conductive ?? , i use a clear nail polish to make a blutooth audio module water resistant, that was teriible... most switches on the board stoped working and led also stoped working ... board is working But 😥😥
Bought this lamp yesterday and its really cheap, ill try modding this to make it last forever hehe.
Did you buy the exact same one? or one of the larger versions? What's your plan with it? :)
where can I buy a TP4056 Chip/Board?
AliExpress
What is the charging system for those all old mobile phones (non-USB)? Does it require a charge controller or BMS?
I think even the oldies are still lithium-ion based. They may have used barrel jacks but the internal charge boards are essentially the same as what you find in modern phones. Although of course they used to charge much slower :P
Where can you buy a charge board like that and an 18650 cell?
I bought them on eBay, 5 for $1 or $2. You can find them locally on OLX and Shopee but the prices are often ridiculously high. As for the 18650 cell, I removed it from an old powerbank but you can get them on Lazada, Shopee, OLX, CDRKING - pretty much everywhere. Of course there's a LOT of fake 18650s being sold, so don't believe the advertised capacity.
Where did you get the charge board? On another note where do you buy those electronics you have? Having a hard time finding retailers here in the Philippines
The charge board came from eBay. I bought 5 of them for $1 or $2. They were super cheap. Unfortunately I already used them in other projects. Whenever a product breaks, I save the battery for future projects. Which electronics are you asking about?
Just thought you bought them from a retailer here.
I also bought one of this. After the power run out and try charging via usb... it doesn't work anymore not unless the cable is still connected it lights up...
how about the CDR-KING P99 power bank PCB
I'm not exactly sure what your question is? But a P99 powerbank from cdrking and a P20-P50 USB light would be a good alternative to this Omni light.
I think he means take the charge controller out of the CDR-King power bank.
Could have run wires from the original usb connector to the one on the new charge controller, then you don't have to dremel the case.
+Ian Haylock i thought about that but id also have to destroy the PCB traces going from that input to the existing charge circuitry otherwise it would conflict with the new charge PCB we installed.
no you can use epoxy to do it no need to solder it
Well the soldering was easy anyway, it only took a few seconds. But yeah I guess some kind of epoxy would have been safer than a hot glue. I was just trying to use what I had laying around :)
I think you should put up a new video on why you are annoyed with lead-acid batteries over lithium.
Yeah I guess I could. I gave an explanation in my previous video. For anyone reading this comment and wondering what my concern is, let me explain. *Short Version:* Lead acid batteries charge slower and have a much shorter life than Lithium-ion or Lithium-Polymer batteries. *Long version:* Under perfect conditions, lead acid batteries can last a few years. The high ambient temperatures of the Philippines is already a negative towards the life of a lead-acid battery. The next issue is with how this light discharges the battery to such a low voltage; this greatly reduces the life of the battery. So we thought we're getting a fast charging, long life, lithium battery but what we actually got was a slow charging lead-acid battery that will probably be barely usable within a month if you use it every day. Aside from the difference between lead-acid and lithium batteries, these small generic 4V lead-acid batteries are notorious for being low quality.
Gadget Addict yes the 4v lead acid ones r widely used in Chinese products from emergency lights to mosquito zapper(here in india).hardly last 3 months very unreliable
lithium batteries are all the same for bms.
constant current, constant voltage
just top voltage can change and bottom voltage
Great, thanks :)
Can you modify a firefly emergency light with fan to a lithium ion battery? Pls make a video with parts. Tnx
I'll try make it happen. I would like to do it! It might be a little more complex because we need a higher voltage. But where there's a will, there's a way :)
dont use hot glue on 18650 charger...cuz... if youre charging... it gets hot. hot glue will melt.. try mighty bond, bulldog, or epoxy..
I modified and replaced my omni led lead acid to 2x 18650 (3000mAh each), total of 6000mAh. And it gave me around 40hours of use instead of 3-7 hours on lead acid🤣🤣
But takes 10-12 hours to charge on 5v 1a.
Nice! With a runtime of 40 hours, I guess it doesn't matter if it takes a bit long to recharge.
........i suck in soldering......always end up looking messy......... :[
Having a good soldering iron and clean tip can make a huge difference. And avoid using lead-free solder.
Gadget Addict "...and avoid using lead-free solder." Lol. So true though!
Practice makes perfect, but yeah a decent iron is basically a requirement to get good results, go on ebay and grab a few kits to practice on.
And don't forget to use flux, makes soldering so much easier.
Cool
It's a good try :)
nice i knew it haha
Epic fail xD
Actually its dangerous to put a lithium polimer battery it can blow up even you put a safety circuit
And an Asteroid could hit the earth and wipe us all out. Pretty much every cellphone in the world is using a lithium polymer battery.