Can I use two 3s packs in series to make 6s for a Swift?

[copperkiid]

I have several TP 3S 2000mAh lipo packs and was wondering if they could be linked together in series to make a 6s pack for a swift? Thanks

[SteveH]

I'm not heavy in to electric helis, but I am an electronics tech, and don't see why not.

[Motions]

You can certainly do that to get a 6S setup but I doubt the power is going to be there. If your just hovering, you should be fine. Flight time will probably be pretty short also.

[bkervaski]

It's the discharge rate that will be the problem. Two scenerios: 1) simply not enough power or 2) Your engine draws so much it overheats the pack(s) and boom/meltdown/blackhole/cats start sleepging with dogs/end of the world as we know it/etc.

I'd play it safe and just get the appropriate battery pack.

[red_z06]

If those are early packs, the dischage rate would be around 12c or 24amps per pack. For swift, you need 60amps continuous dischage rate so you would need to stack 3 sets in parallel and you need 2 sets of 3 sets to get 6s3p config and you will do fine. The biggest problem with multiple packs are matching the pack voltages to be equal. You can do this by charging packs in parallel while making sure each pack varies by no more than 0.3v. If any pack is out of the stated bounds, then you need to charge the low pack so it comes up close to other packs. Afterwards, you can plug them into a parallel harness to chage them as 3s6p config. You need to charge them at 12amps for 1c.