Originally Posted by
spookie
I understand what Dave is saying, but OP claims it says 2S/ 7.4 volts on it. If it's a dual cell wired internally as a single, how can a charger monitor each of the two cells in the pack during charging? You would have to have a parallel board for each 2S connector, EACH battery having 2 cells lol.
The individual cells are connected in parallel in each brick/saddle. A parallel connection forces an equal voltage. Ironically a parallel board operates in exactly the same way. Many standard 2S packs are 2S2P, 4 cells, and have a similar connection. Although there are limitations of course, no way to determine the individual cell capacities, can only see the sum.
Originally Posted by
spookie
Now as to who runs dual 7.4 volt batteries in series, 14.8/ fully charged is 16.8 volts, which equals 4S, apparently everyone that runs dual seried packs of this type, is running at 4S voltage.
Seems unlikely, saddle packs are fairly common in racing. Roar and other rules limit the class that B44s and other similar cars run in to 2S, packs are checked for voltage at national events, the speed controls typically used won’t handle 4S voltage.
I am unable to find any Venom 4S saddle pack on their site or AMain, or any other brand. If you can provide info on such a pack, that would fit in a B44, it would be interesting.
Originally Posted by
spookie
No battery manufacturer would ever label a single battery with combined voltage of two, assuming you will be using them in pairs. That's against the law, feds would be all over that. If a battery is lost, the improper label would cause improper charging.
Intriguing point. I notice a Reedy saddle pack on Amain is labeled 3.7V on each brick. Appears to have the same wiring configuration. The newer Venom saddle packs have different labels on the 2 bricks, that may be an attempt to make the labeling more clear, not sure.
Originally Posted by
spookie
Lol, I think we need a picture of both packs.