[Batfish]

Charging multiple packs at the same time with one charger can indeed be accomplished, but you should take precautions.

1 - NEVER charge packs of different manufacturers or different capacities together with one charger.

2 - Make sure the cells in each pack are balanced to the SAME voltage before the first charge. NEVER charge packs where the cells are at different voltages.

3 - Make sure that your charger can handle whatever configuration the packs equal when putting them together. If you're charging a 2s1p 2000 pack with a 3s1p 2000 pack in series, make sure your charger can do 5s charging at 2Amps or less.

4 - Regularly balance the packs to keep them safe when doing the multiple-pack charge.

Here's an example:

A. I have two 3s1p 3200mah lipo packs that I want to run in parallel. This means I am running the equivalent of 3s2p 6400mah.
B. I balance both packs individually during a charge to bring every cell to 4.2 volts.
C. I plug the two packs in parallel and run them in my vehicle. At this point, the cells will still be balanced (or very, very close to it) because they are all pushing the same amount of power to the vehicle.
D. After the run, I keep the packs plugged in parallel and attach them to the charger, then begin charging at 6.4Amps (3200mahx2=6400mah=6.4A).
E. After the charge is complete, go back to step C.

Repeat steps C through E a few times, then go back to step B and re-balance. You do not have to re-balance every time you charge as long as you are using the packs within their stated parameters. Don't charge to more than 4.2V per cell. Don't run below 3.0V per cell. Don't let the packs heat up (run within the amp rating of the pack). When lipo packs are initially balanced, then used properly, the cells will very rarely go out of balance during the usable life of the pack.

Remember, as always, the risk of using the technologies we talk about here lies solely on the user. Make sure you excersize sound judgement and make informed decisions on everything you do, including these sometimes potentially volatile toys we like to play with. :003: