Separating GOOD 18650 cells from BAD ones - Battery talk #2

FAQ:

****************************************­****************************************

****************************************­****************************************
If you would like support our project and help me make videos,

****************************************­****************************************
Also please support my sponsors
****************************************­****************************************

[Jason.of.the.forest]

Note: do not chuck dead batteries into the trash. Recycle them please.

[stevebhu]

Your videos rapidly becoming my go to guy when it comes to anything about electric vehicles, I'm only trying to sort out a battery for electric bike but I've learnt a lot from your videos so thanks.

[dekuramen]

Thank you for the awesome battery talk broh!

BTW he's not bouncing, he's just vibrating at a higher frequency.

[KillerkoUK]

This is actually pretty dangerous advice to put 16 cells parallel in a charger without testing them with multimeter for voltage first... if they are not at the same voltage they can get very hot very quickly without even connecting a charger to it as the highest cell will try to charge the lowest.. You should always measure the voltage if you have random unknown cells.

[Nybravest]

Damn.. I hate to be one who seems to not be paying attention to the message but, I think your dogs had a "moment" behind your back.
Anyway, you're still the man.

[AveRage_Joe]

Ive been using the foxnovo charger, it will capacity test 4 at a time at .5 or 1 amp.  I also precharge 20 at a time with 20 of the tp4056's with a computer power supply because if you parallel them like you are doing (imo), a higher voltage battery/batteries will send its available amperage to a lower cell and the c rating could be maxed out. Love your videos

[captainmcquirkstube]

DUDE! Love the dogs hiding behind you humping. LOL!!!

[AlbertEspinRodriguez]

Bouncing video !!! Shake it baby, shake it !!

[donny]

Can u combine different cels like 2000mah and 3000mah different Brands With charging ?

[robertmotion]

Great video.
Question - can you recommend a lithium battery C-rate tester to purchase.
I build ebike batteries and need a solid c-rate tester. thanks.

/Bklyn👑

[sethlavinder]

Wish I had known this battery knowledge a few years ago, as I was an IT guy and used to collect piles of dead laptop battery packs for recycling. I was familiar with idea that the entire pack wasn’t bad that it was probably just one or two cells. What got me I was still afraid of blowing up a lithium battery trying to charge it now. Never realized how much useful power I was loosing. Price was right! What beats free!

[gibbons]

What happens when I make a 4 battery power pack with one cell the has much lower mAh than the other three? say 2500, 2500, 2500, 1300 mAh (used Samsung26f). Is the pack better off with just the 3 higher preforming cells? The internal resistance was measured about 20-25 for the good three and 51 for the lower mAh cell (by the lii-500, I know, just an estimation). Voltage seems fine in all of them, no excess heat during charge/discharge. Thanks in advance for any input!

[jasonbrown]

so no balancing? all the different types, different quality and mah rating all connected in parallel?

[stewartbruce]

Dear Jehu,

You teaching skills are brilliant and easy to understand, You are a great mentor to us in you tube land!!

Thank you for all your tutorials.
Bruce the swimmer NEW ROCHELLE N.Y.

[grahamwoodwrad]

I bought the charger but when I connect up an 18650 it says connection break... after some research I've concluded it's because there's no balance leads ??? But I didn't see you having any what's the solution?

[lesliestandifer]

What about measuring internal resistance?

[R.B_B]

Using this battery holder and the rc charger can br able to balance charger the batteries?

[dnevnipodsjetnik]

If you are charging one cell with 300mA. How do you charge 2 cells? setting it to 600mA?? For 3x set to 900mA?....etc
Or you are charging all 16 cells on 300mA? Please explain

[rentownnz]

wow... do you have a temperature activated ceiling fan? just turned on all of a sudden during you video! nice!

[SpeedDeamon]

Do these batteries need to he dischsrged before storing?