I found locally a great deal on some big 6s lipo’s…
My plan is to use 4 x 22000mAh on the frame and 4 x 16000mAh in a flight cockpit/ballast bag.
If you are going to use batteries in series, they should be of the same age, manufacturer, capacity and type.
That’s because all cells in a series pack have to be able to support the full load current which is running through every one of them.
Since I have to parallel them as well it is important that all paralleled packs must have the same charged voltage… They don’t have to be the same capacity (mAh).
If batteries are connected in parallel, each will stay at exactly the same voltage as the other at all times. If your packs are different capacity (mAh), the larger one will provide a greater share of the power than the smaller one, in order that it’s voltage drops at the same rate.
I will also use on each balance lead cell voltage checker, which are buzzing if any separate cell is going below a certain voltage (3.3 volt default). They are really loud…
The weight of the 4 x 22000mAh would be 9960 gram and the 4 x 16000mAh would be 7728 gram.
This would be a total 76000 mAh in 12s. I think this is a versatile combination since I can use whatever
capacity i need in parallel mode.