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e) RC and robots largely use LiPo batteries these days. For driving most hobby servos and motors, they are intended for 2S (7.4V) LiPo batteries. Older gear wants 4-way (4.8V) or 5-way (6.0V) NiMH batteries which are less finicky to charge, but don't last as long.
Here's a super cheap LiPo battery that comes with its own charger. Down side is its big, but upside is it has internal protection circuitry, simple to use, on/off switch and simple AC charger. Probably not great quality (I'm still waiting for mine to come in the mail) but for 20 bucks you cant argue.http://dx.com/p/1268-12v-6800mah-rechargeable-li-polymer-battery-blue-black-12v-227733
Quote from: jwatte on October 27, 2013, 12:54:21 PMe) RC and robots largely use LiPo batteries these days. For driving most hobby servos and motors, they are intended for 2S (7.4V) LiPo batteries. Older gear wants 4-way (4.8V) or 5-way (6.0V) NiMH batteries which are less finicky to charge, but don't last as long.I disagree. LiPo batteries have about the same amount of charge/discharge cycles as NiMH batteries (several hundred) . LiPo batteries are much more expensive, dangerous, and complicated to charge because you need a cell balancing charger for it. LiPo batteries are usually only used in high-end RC vehicles that need the most power for its weight. LiFePo batteries are a much better alternative to LiPos as they have several thousand charge/discharge cycles in its life.
LiPo batteries have a cell voltage of 3.7Vobviously something is wrong here...In no way can you get 12V from 3.7V per cell.Most 'real' LiPo packs cost between $50-$200 depending on mAh