Li-Ion Battery Packs

**Marco** · 09-28-2011, 10:18 AM

one more little confirmation...

Will this work --> 1.jpg

Thanks in advance...

**Silver Serpent** · 09-28-2011, 10:57 AM

Looks right to me.

**Marco** · 09-28-2011, 01:06 PM

thanks for the check

**Marco** · 10-09-2011, 04:13 AM

Did it thanks to all

**scotticus** · 10-17-2011, 01:39 PM

Okay, not a total newb, but i am to these protected circuits. Can i use two 3.7v protected cells and the 7.4v PCB? or do i have to use the unprotected cells?

**Skottsaber** · 10-17-2011, 01:41 PM

One or the other.
Either you use the 2 protected cells and no protection, or 2 unprotected cells and the protection circuit (recommended for making packs).

**scotticus** · 10-17-2011, 01:51 PM

so all i see on TCSS is protected cells sold in packs of two. I was planning on getting a PC w/ two of these cells wired in series with 2.1mm jack for recharging. if i solder two of the protected cells together, they don't need any kind of PCB? i can just hook them into the PC and recharge port?

**Skottsaber** · 10-17-2011, 01:54 PM

Yes, that will work. But you will notice after some usage that the pack will have less runtime and seem to discharge quicker. This is because each cell's protection circuit is going to be slightly off balance to the other. This will eventually lead to one cutting off before the other and your pack will start to have shorter runtimes.
I highly recommend getting unprotected cells and a PCB.