Batteries in series

[timberjack73]

can you run batteries in series if the mAh is the same but the c rating is different?

[Fluid]

That would be a bad idea. One pack would likely overheat, especially if the discharge rate is relatively high.




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[RaceMechaniX]

Sticker C ratings are fairly bogus. If your charger has the ability to measure the internal resistance you could check if the IR values are similar at the same battery temp and voltage. If these values are similar the true discharge rate is likely similar. If you do not have this ability to measure, err on the safe side and do not try to run different C ratings in series.