Hi all over the last 6 months I have been using 3 x 18650 batteries, I have made 3 packs which I can alternate and they are lasting my activations very well on a mixture of 2M fm and HF ssb.
Is it same to add a further 3 to each pack in parallel for more lasting power? I use a hobby king bms charger. Would I need to alter the charging lead to a 6s?
Cheers in advance for any advice.
I just thought this might be good for next week away to Germany. I am traveling by my own car so no problem with airport battery problems.
Your configuration is now 3S (3 cells in Series). If you want to add another 3 cells to increase battery life, you will need to switch to 3S2P (3 Series of 2 cells in Parallel). If your BMS doesn’t support a true combined series-parallel configuration, I guess you can just stick with 3S and connect the cells like they do here, with some small penalty on battery cycle count.
I have a 3s psck but its 4 cells in parallel and the banks of 4 connected in series to make a 3s pack. Use a 3s ballance lead 1 wire in neg and pos of the pack then other 2 goes to 2nd and 3rd bank pos