Thanks for your watching and support. Looking forward to your comments, the one whose comment gets the most likes in YTB comment area can get the power bank in our video. Power Bank Housing with Circuit Board For DIY: bit.ly/3knZzhV I2C-2SCN Heating Platform: bit.ly/2MqWQYm High Purity Soldering Wire: bit.ly/3pS2ujP Anti-static Straight Tweezer With Ceramic Head: bit.ly/3qWuvs5
Please note that the battery capacity that is below 80% is considered as battery aging and may result in losing the ability to hold the charge so all you have to do is to replace with new battery for longer lifespan.
For people wanting to do this, please make sure batteries are identical to each other in voltage, if not, charge them individually. Both batteries will drain down close to one and other, rather than one draining less than other and not getting fully charged, loosing mah's.
ive been making DIY powerbanks with old smartphone batteries ever since removable batteries were still the norm, i use to use duct tape to make the casing, this version just makes it look nicer
Point to remember! Use old batteries that have had the least-amount of recharged cycles, the more cycles the more often you will be recharging the battery pack 🔋 itself 😂
Nice idea but there's some minor problem. First you must pair 2 battery with the same capacity for optimal operation, as one could have gone flat first (because of lower capacity) and the other have to charge the flattened and thus reduce the total capacity, second is you need to count for the battery wear level as they don't remain the capacity like before. And third is in the conversion stage there's some power losses in it, the battery pack you made could only fully charge an iphone for just once and then need recharging, not ideal but useful in some emergency situations. If you still want to do the iphone-battery power bank, at least do with the same battery model and with many battery as possible.
@@ecotechnologysolutions8329 usefull information is scattered on the internet but as long as you keep the same cell chemistry and comparable internal resistance, the capacity or the battery doesnt need to be matching because its behaves as a whole while series connection is litterally individal batteries that can unbalance because they dont behave as a whole but rather separate parts.
Please tell why you removed the BMS ? The primary function of the BMS is to protect the battery cells from damage caused by being overcharged or over-discharged. Additionally, the BMS calculates the remaining charge, monitors the battery’s temperature, monitors the battery’s health and safety by checking for loose connections and internal shorts. The BMS also balances the charge across the cells to keep each cell functioning at maximum capacity. If it detects any unsafe conditions, the BMS shuts the battery down to protect the lithium-ion cells and the user.
@@aimbuster1 but why he removed bms What is the reason behind this? And one thing if we remove bms Battery voltage reading will increase like 3.7v to 4.5v or 5v.
@@mdtauqiralam1018 the reason again is. There is already a BMS logic on the USB Power Bank circout board. No BMS reads nothing. Two Cells in parallel BMS itself they dont need it also. U just need BMS if you run cells in series. I dont understand your second questions with voltage reading.
I've managed a while back to get ahold of two lithium ion batterys out of some old display cases both being 3.7v, with one being 7500mAh and the other being +6000mAh. Was wondering if the same case you used in the vid would be able to work for them or do certain powerbank boards work with certain mAh sizes. I'm new to this and curious how it all works, thanks 👍
want to enroll in your training program but havent found course schedule date, please can someone update me on the starting date and the procedure to follow
Apologize that now we don't have any plan for onsite plan, but you can still enroll our online course if you are interested in. Here is the link: academy.rewa.tech/
This is huge deal saving the planet and reducing e-waste that's how it's done ✅ as we know battery probably the most degrading components of electronics devices this is will make a huge difference
Hello. Short Quest. I have two Batteries. 3.82 V and 3.8 V. Does the 0.02V Difference matter? Fast respond would ne great, trying do to the solder right now. Thx from Germany
Very cool as a project, but aren't you replacing the phone battery because it is not good anymore in the first place? Using it in a powerbank would just make for a powerbank that doesn't hold much of a charge and needs to be recharged often? Specifically, if you use it on your iPhone, it would not even give it a full charge. A 10,000 mAh powerbank of that size can charge your iPhone at least 3 times.
Thank you for watching and commenting. According to the information given by REWA technician, please perform the following two points to ensure safety: 1. Please choose a good-looking battery without damage or swelling. 2. Please protect the position of the battery welding wire to avoid short circuit of the battery.
Just get Isopropanol, 99% clean alcohol, it is perfect for cleaning pcb's and removing glue, I tell you from my own experience, I also looked for a long time.
Apologize that now we don't have any plan for onsite plan because of corona, but you can still enroll our online course if you are interested in, academy.rewa.tech.
Thank you for watching and commenting. All mobile phone batteries can be used as power banks, but you must ensure that the battery is healthy, which means that the battery must not be swollen or damaged.
Because batteries are extremely poisonous for the environment aswell as for humans, money is worth nothing than just the belief of the people, it's only virtual numbers and colored paper, but our health and the planet are real and can't be replaced with nothing, change your way of thinking brother.
where did the apple got the all parts or which apple factory that makes all parts of the iphone itself ? it’s true that the all parts is coming from factory in china???
Thank you for watching and commenting. According to the information given by REWA technician, please perform the following two points to ensure safety: 1. Please choose a good-looking battery without damage or swelling. 2. Please protect the position of the battery welding wire to avoid short circuit of the battery.
@@ecotechnologysolutions8329 just say you connect a 2000mah and a 1700mah cell in parallel. When you go to charge it the charger will only stop when it sees 4.2v. When you go to discharge there’s a chance the 1700mah cell can go below 3v while the larger cell is still at 3.5v. Because they’re in parallel the larger cell will be keeping the voltage up and working harder. Meanwhile the lower capacity cell can very likley go below low voltage. But just say it goes to 2v (very bad) the bigger cell is still 3.4v then the total output may only be 3.2v so you think everything is ok. But the low cell will discharge and possibly start taking large amounts of current from the larger cell because there’s no current limiting in place now. So on and so forth.
@@pcarlson1979 Wrong. In parallel connection capacity of batteries doesn't matter. Capacity matters in series connection. Connection presented here is parallel.
Thanks for your watching and support. Looking forward to your comments, the one whose comment gets the most likes in YTB comment area can get the power bank in our video.
Power Bank Housing with Circuit Board For DIY: bit.ly/3knZzhV
I2C-2SCN Heating Platform: bit.ly/2MqWQYm
High Purity Soldering Wire: bit.ly/3pS2ujP
Anti-static Straight Tweezer With Ceramic Head: bit.ly/3qWuvs5
Please note that the battery capacity that is below 80% is considered as battery aging and may result in losing the ability to hold the charge so all you have to do is to replace with new battery for longer lifespan.
Disposing battery is one of the hardest job we are facing. Thanks so much for the wonderful idea
For people wanting to do this, please make sure batteries are identical to each other in voltage, if not, charge them individually.
Both batteries will drain down close to one and other, rather than one draining less than other and not getting fully charged, loosing mah's.
please explain more? so if i use 2 batteries of which one is full and one is flat it will cause problems?
ive been making DIY powerbanks with old smartphone batteries ever since removable batteries were still the norm, i use to use duct tape to make the casing, this version just makes it look nicer
does it allow fast charging ?
I received my Power Bank device today and it works like a Charm. Thank you for such a Great idea REWA.
I just followed the instructions except used 3 IP7+ batteries and it works great!! Thanks REWA you guys rock!!
this channel is under rated
Point to remember! Use old batteries that have had the least-amount of recharged cycles, the more cycles the more often you will be recharging the battery pack 🔋 itself 😂
No shit
Rewa technology is always first in every repair and I learned from so much
Nice work
Convert it to a solar charger now for use with light-sensitive devices that activate in the dark and charge in sunlight.
Good Job REWA!
Save environment save earth kept up 👍
The power bank must have a battery temperature probe, which can cut off the current at high temperatures to avoid danger.
no high amps drain involved, battery wont heat up
true
Nice idea but there's some minor problem. First you must pair 2 battery with the same capacity for optimal operation, as one could have gone flat first (because of lower capacity) and the other have to charge the flattened and thus reduce the total capacity, second is you need to count for the battery wear level as they don't remain the capacity like before. And third is in the conversion stage there's some power losses in it, the battery pack you made could only fully charge an iphone for just once and then need recharging, not ideal but useful in some emergency situations. If you still want to do the iphone-battery power bank, at least do with the same battery model and with many battery as possible.
no series connection used. Only parralel meaning cells dont need to match. Check out series vs parralell in li-ion batteries in google if you wish.
@@michaelboot can you expand on this please?
@@ecotechnologysolutions8329 do you own homework
@@michaelboot Couldn’t be any less helpful.. thanks pal 👍
@@ecotechnologysolutions8329 usefull information is scattered on the internet but as long as you keep the same cell chemistry and comparable internal resistance, the capacity or the battery doesnt need to be matching because its behaves as a whole while series connection is litterally individal batteries that can unbalance because they dont behave as a whole but rather separate parts.
As usually always have the idea and solution for everything, thank you Rewa
Please tell why you removed the BMS ?
The primary function of the BMS is to protect the battery cells from damage caused by being overcharged or over-discharged. Additionally, the BMS calculates the remaining charge, monitors the battery’s temperature, monitors the battery’s health and safety by checking for loose connections and internal shorts. The BMS also balances the charge across the cells to keep each cell functioning at maximum capacity.
If it detects any unsafe conditions, the BMS shuts the battery down to protect the lithium-ion cells and the user.
the new powerbank pcb alrdy have a bms.
@@aimbuster1 but why he removed bms
What is the reason behind this?
And one thing if we remove bms
Battery voltage reading will increase like 3.7v to 4.5v or 5v.
@@mdtauqiralam1018 the reason again is. There is already a BMS logic on the USB Power Bank circout board.
No BMS reads nothing. Two Cells in parallel BMS itself they dont need it also. U just need BMS if you run cells in series.
I dont understand your second questions with voltage reading.
@@aimbuster1 but what if do not remove bms
Will there be any change?
This is some really good DIY Video
Recycle ♻️ Reuse ♻️ Rewa ❤️
Good job I👍👍👍👍👍👍👍
Great way to reuse resources!
use puffy batteries for maximum performance
an honor to learn from you
Well done brother
I've managed a while back to get ahold of two lithium ion batterys out of some old display cases both being 3.7v, with one being 7500mAh and the other being +6000mAh. Was wondering if the same case you used in the vid would be able to work for them or do certain powerbank boards work with certain mAh sizes. I'm new to this and curious how it all works, thanks 👍
cREWAtive recycling...
How many batteries can i connect with this circuit board. What’s the limit?
Wouldn't the board be programed for a diffrent size battery and therfore be giving a false reading on its capacity?
Well done!
Great idea!
Beautiful
Good thought thank you
circular economy well done!
I really like you REWA
Tengo dos baterías idénticas de LG q60 , con esta idea voy a fabricar una powerbank
want to enroll in your training program but havent found course schedule date, please can someone update me on the starting date and the procedure to follow
Apologize that now we don't have any plan for onsite plan, but you can still enroll our online course if you are interested in. Here is the link: academy.rewa.tech/
Mantap
Saving earth
Capacity of below 80%: Shorter usage hours.
Capacity of above 80%: Extended usage hours.
the batterys are diffrent mah and volsts so the lipo will over heat and blow up
dont you have to balanced the cells before put parallel?
May I ask what the internal dimensions are please? I need to know what size battery I can fit in there.
Can I put 3 batteries 🔋 instead of 1 ?
So no balance charging?
is it possible to make a big external battery directly connect to the iphone motherboard?
This is huge deal saving the planet and reducing e-waste that's how it's done ✅ as we know battery probably the most degrading components of electronics devices this is will make a huge difference
Nice video
In your opinion what can be the new lifespan of the new battery thus created.
Please is anyway I can use my tablet ad a portable charger ?
Trash to
Treasure 👍
Hello. Short Quest. I have two Batteries. 3.82 V and 3.8 V. Does the 0.02V Difference matter? Fast respond would ne great, trying do to the solder right now.
Thx from Germany
really cool way of recycling but what if such old/used batteries begin to inflate like they usually do when they get old?
Thank you for watching and commenting. To ensure safety, the battery must be healthy, which means that the battery must not be swollen or damaged.
@@rewatechnology2008 Thank you
.. for the information.
What if I put on a different mAh battery?..
Very cool as a project, but aren't you replacing the phone battery because it is not good anymore in the first place? Using it in a powerbank would just make for a powerbank that doesn't hold much of a charge and needs to be recharged often? Specifically, if you use it on your iPhone, it would not even give it a full charge. A 10,000 mAh powerbank of that size can charge your iPhone at least 3 times.
Congratulations from Istanbul Turkey. CUHUNİ
I would order these, however the shipping on your site is far too expensive. Do you have an eBay or Amazon link?
We currently don't have aBay or Amazon stores.
Instead of generating ewaste we create more ewaste😏😏😏 sounds good to me
Why use old batteries for this?
I was going to order one of these but i cant sign in to rewa website ☹️
Awesome , i made that before 10 years
But it’s dangerous no one do it if not understand . It’s becomes fire 🔥
Thank you for watching and commenting. According to the information given by REWA technician, please perform the following two points to ensure safety:
1. Please choose a good-looking battery without damage or swelling.
2. Please protect the position of the battery welding wire to avoid short circuit of the battery.
Didn't phone repair guru make a vid about this?
Respect. Please add you powerbank to Aliexpress.
Why these tutorials always use lion battery? What if i use tiger battery i mean li-poly battery because it has different voltage?
ارجو منك آلة الحام او المكواة التي تعمل بها
Can you just use one iphone battery because I only have one?
Do you have 18650 batteries and 18650 battery cases for DIY powerwall?
why not just use ampsentrix power from mobilesentrix?
Hi,
I want to know which pcb cleaner you use to clean board, give me the name so i can buy the same one. Thanxs
Just get Isopropanol, 99% clean alcohol, it is perfect for cleaning pcb's and removing glue, I tell you from my own experience, I also looked for a long time.
I already knows this tip by 5 years
How many batteries can fit in this case ?
Hi, thank you for your watching, this case can hold up to three batteries~
HI can we make a power wall charger for ipad mini Battery?
I wanna to join your institute for motherboard training... How to apply for the training can u explain me???
Apologize that now we don't have any plan for onsite plan because of corona, but you can still enroll our online course if you are interested in, academy.rewa.tech.
@@rewatechnology2008 online and offline class both are very different..
I have a Redmi 4x battery how can I reuse it?
Thank you for watching and commenting. All mobile phone batteries can be used as power banks, but you must ensure that the battery is healthy, which means that the battery must not be swollen or damaged.
why? , 10000mah powerbank costs less than $10 included shipping
Because batteries are extremely poisonous for the environment aswell as for humans, money is worth nothing than just the belief of the people, it's only virtual numbers and colored paper, but our health and the planet are real and can't be replaced with nothing, change your way of thinking brother.
because you are reusing an old battery
Intro Music? I feel like its copied
where did the apple got the all parts or which apple factory that makes all parts of the iphone itself ? it’s true that the all parts is coming from factory in china???
❤️❤️❤️
Before reuse trash battery please make sure it safe to re use, or it will explode, its dangerous.
Thank you for watching and commenting. According to the information given by REWA technician, please perform the following two points to ensure safety:
1. Please choose a good-looking battery without damage or swelling.
2. Please protect the position of the battery welding wire to avoid short circuit of the battery.
Io è da tanto che faccio così pensate che ne ho fatto uno da quasi 50 ampere
you will get 10000mah power bank for 4 usd in alie :p
NEVER connect different capacity cells together in series. This is dangerous 🤦🏻♂️
How so?
@@ecotechnologysolutions8329 just say you connect a 2000mah and a 1700mah cell in parallel. When you go to charge it the charger will only stop when it sees 4.2v. When you go to discharge there’s a chance the 1700mah cell can go below 3v while the larger cell is still at 3.5v. Because they’re in parallel the larger cell will be keeping the voltage up and working harder. Meanwhile the lower capacity cell can very likley go below low voltage. But just say it goes to 2v (very bad) the bigger cell is still 3.4v then the total output may only be 3.2v so you think everything is ok. But the low cell will discharge and possibly start taking large amounts of current from the larger cell because there’s no current limiting in place now. So on and so forth.
@@pcarlson1979 Wrong. In parallel connection capacity of batteries doesn't matter. Capacity matters in series connection. Connection presented here is parallel.
😊
3.7v and it is 33% 🤔🤔🤔🤔🤔🤔🤔
polute my ass ,since when everyone start being so hurt by batteries ??)))
🌺🙂
Why have the text to speech narrate? Do you have an accent that is too hard to understand for Westerners?