It's to check for good cells. You can have 0V on the total output and still have good cells. The output is connected to P- of the BMS, a fried BMS can output 0V while some cells are still good
Do you know if a dell power companion Li-ion battery can be recharged after sitting unused, still in its packaging, after 5 years? It won't 'hold a charge'.
It's made out of 18650 Lithium-Ion batteries in a 4s1p or 4s2p configuration depending on the model you have. If you know what you are doing, you can disassemble it and revive the cells if they are not too far gone. Just apply about 4~5 volts, 1 amp directly to each cell for a minute or so. You can even swap out the cells for new ones. Remember that Lithium ion batteries can cause fires and burn your home, so only attempt if you know how to safely manipulate it
Why aren’t you testing them from the board? It definitely seems like you have an issue with your multi meter. There’s no reason they should all show 0v
I could have tested the cells from the BMS board. I avoid doing that because if the BMS wires were pinched, loose or burnt; it would interrupt voltage to the board. So measuring directly on each cell is the way. So to you a lithium-ion battery can never read 0V? I hope this is a satire statement
There is a reason, one simply can’t say for sure what that reason is. That’s why he says “interesting…” Because it is indeed interesting! It makes you wonder what the person did to get them completely discharged.
There are a lot of inaccuracies in this video I’m sorry but you cannot use these for vapes or flash lights these are 21700 35 amp Samsung cells. DO NOT FOLLOW THIS ADVICE
There is no inaccuracy in this video. I make these videos to educate people like you. I suggest you stop messing with batteries (it's a fire hazard if you don't know the basics). You can use these batteries in vapes and flashlights (if they hold charge), regardless or their size (18650 or 21700). Just get a vape that uses your battery size. You are wrong, these are not 21700 35a. These are 18650 - 22P M Samsung SDIEM 5FX4 - 10A. If you look at the form factor of the pack at the beginning of the video, you can tell this is a hoverboard battery and they all come with 18650 cells. It's widely known. You can see the battery specs on the cell at the end of the video: drive.google.com/file/d/15b8zFHZSGOajS27J2kFaHIH7ts9D1z0A/view?usp=sharing
Nice video! Thanks for the inspiration.
lol, why do you check each battery separately when u have connected them by nickel in series?
It's to check for good cells. You can have 0V on the total output and still have good cells. The output is connected to P- of the BMS, a fried BMS can output 0V while some cells are still good
Do you know if a dell power companion Li-ion battery can be recharged after sitting unused, still in its packaging, after 5 years? It won't 'hold a charge'.
Yes, it's rechargeable page 9
dl.dell.com/manuals/all-products/esuprt_electronics/esuprt_prtble_pwr_companion/dell-portable-power-companion-pw7015l_user's%20guide_en-us.pdf
It's made out of 18650 Lithium-Ion batteries in a 4s1p or 4s2p configuration depending on the model you have. If you know what you are doing, you can disassemble it and revive the cells if they are not too far gone. Just apply about 4~5 volts, 1 amp directly to each cell for a minute or so. You can even swap out the cells for new ones. Remember that Lithium ion batteries can cause fires and burn your home, so only attempt if you know how to safely manipulate it
@@YvonSmart 🧐🧨🔥🔥
@YvonSmart is what u described, something u know how to do?
@@SlickEldanVibe Yes, the configuration will look like this: ruclips.net/video/1_jIHz9JmnI/видео.html
What brand are you lil chargers
Zanflare C4 Universal Smart Battery Charger, amzn.to/3W6coQw
Why aren’t you testing them from the board? It definitely seems like you have an issue with your multi meter. There’s no reason they should all show 0v
I could have tested the cells from the BMS board. I avoid doing that because if the BMS wires were pinched, loose or burnt; it would interrupt voltage to the board. So measuring directly on each cell is the way. So to you a lithium-ion battery can never read 0V? I hope this is a satire statement
There is a reason, one simply can’t say for sure what that reason is. That’s why he says “interesting…” Because it is indeed interesting! It makes you wonder what the person did to get them completely discharged.
There are a lot of inaccuracies in this video I’m sorry but you cannot use these for vapes or flash lights these are 21700 35 amp Samsung cells. DO NOT FOLLOW THIS ADVICE
There is no inaccuracy in this video. I make these videos to educate people like you. I suggest you stop messing with batteries (it's a fire hazard if you don't know the basics). You can use these batteries in vapes and flashlights (if they hold charge), regardless or their size (18650 or 21700). Just get a vape that uses your battery size. You are wrong, these are not 21700 35a. These are 18650 - 22P M Samsung SDIEM 5FX4 - 10A. If you look at the form factor of the pack at the beginning of the video, you can tell this is a hoverboard battery and they all come with 18650 cells. It's widely known. You can see the battery specs on the cell at the end of the video: drive.google.com/file/d/15b8zFHZSGOajS27J2kFaHIH7ts9D1z0A/view?usp=sharing