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Old Jun 20, 2010, 09:20 PM
jkettu is offline
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Joensuu, Finland
Joined Mar 2002
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The motor will pull as many amps as it needs. The fact that a battery is capable of supplying more does not change this. If your 20C batteries are hot and puffing, they are not capable of supplying enough amps for your motor/fan combo. You will need to measure your current draw and select the battery so that capacity times c-rating is greater than the amp draw - for example your 2200mAh 20C battery would be capable of no more than 44A (assuming that the manufacturer is honest about the numbers. I wouldn't run it above 30A). If your esc has been running reasonably cool until now, it won't be a problem with higher c-rating batteries. The only limitations for battery capacity are physical size and weight.
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