Originally Posted by
Dave H
This is simply not true, when parallel charging each cell is at the same voltage. Remember lithium charges are voltage controlled, the purpose of balancing is to equalize cell voltages. Hard to be different when they are directly connected. Note many packs contain paralleled cells, one might be parallel charging without being aware of it.
Some good info that covers many of the misconceptions regarding parallel charging.
How-To: Parallel Charging
The problem is mostly when you have a pack with a cell that's a bit off from the others before you start charging. Assuming everything is perfect, then you are 100% right, it does not matter. Nothing is 100% perfect though, so in practice, it can be a problem. If you have two identical 6s packs, and each cell is at 3.75 except one... one is at 3.65, and you parallel charge, you may have a problem. The link you shared cautions the user about this.
Packs with parallel cells are not too common these days for anything aside from lower C TX or RX packs. I've taken apart hundreds of LiPo packs over the years to see how they are assembled. Last time I saw a flight pack that was wired in series and parallel was a 20C Align flight pack from 2008.