building battery packs - question
im looking at building a couple new battery packs. 6cell 18650 @ 3.7v. I use'to build my own packs for RC cars back when NiMH was the standard however I have little to no experience with Li Ion. If I soldered up 6 cells in parallel (3.7v)
Is balancing required?
Do i need a PCB or is this only required for unprotected cells?
If you pay the premium for well balanced cells, this would lower the cell failure rate aswell.. make sure to solder on a balance lead plug , so with 6 cells would be 7 wires, and dont run em below 3.4 - 3.6v area I guess or charge em over 4.15v they may stay balanced,,
No need to wire a balance harness to a parallel pack, but do make sure the cells are matched well when you wire them together. In parallel setup cells will balance them selves. Use protected cells just in case a single cell or more start behaving strange. If possible set the cut off voltage to 3V (under load).