Quote:
Originally posted by Serum
the bottleneck of your packs are the wires. They are not meant for currents larger than 60A if you do ask more than 60A from them, those wires will melt. The battery itself is not limited, they simple can't deliver >60A without damaging. the wires will melt. (can be the little flat wire that connects the lipoly with each other or the power leads, but i fear it are the connections that will fail.)
It is a very slow fuse, it won't burn up when you ask 100A for .5 seconds. but they are not meant to deliver that.
That note is probably the result of a bad experience they had. (in a test or from a customer)
@ squee, the packs will rise in voltage, not in max current when put in serie. It takes parallel to double the discharge and the capacity.
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Serum - how do you know that the wires are the bottleneck? I don't know what the connectors are like inside, but the battery leads are 12 gauge with Deans connectors. The manual indicates that it's limited to 60 amps. It does not indicate that the packs can go above that, and there is no warning about trying to draw more from them. My assumption was that there was some circuit in them that just doesn't allow more than 60 amps to be drawn from them. As I mentioned above, I think it would also be a great safety measure to limit the pack amp draw to well below the max, since it would mean safer temps for the cells. I would think they would have a specific warning about drawing more than 60 amps if it means that the wiring will melt.
I guess I'll either email or call FMA and ask them what the scoop is on these packs. I may get stuck using them in my XXX-T and TC4 if they can't handle the amp draw from using them in my MGT or 1/8th buggy.