02-20-2009, 01:07 AM
Mr. Tune Wrote:Lipo's seem like a lot of work compared to old school nimh batteries. What's the benefit to them? Are they really worth the hassle?
For similar Mah capacities, there is a considerable savings in weight. There are some High Mah LiPo's that are about the same weight as NiMh batteries.
A good LiPo can support a higher amp draw, which results in more power being supplied to the Motor.
A 2 cell LiPo is 7.4 volts as opposed to a NiMh being 7.2 volts. If a motor gives 5000 RPM per volt, that .2 difference in voltage is 1000 more RPM's from a fully charged battery. Along the same lines, a 3 cell LiPo is generally about the same weight as a standard 6 cell NiMh, but gives 11.1 volts as opposed to 7.2 volts.
For racing, if you put 2 equal drivers side by side, one with LiPo's and one with NiMh, the driver with the LiPo's would have a slight advantage.
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