Survey of Commercial Small Lithium Polymer Batteries

摘要

The power and energy of small 1 to 5 g lithium polymer batteries is improving significantly, with a push from the toy and hobby markets. This report characterizes the power and energy of several small batteries from Atomic Workshop, Full River, Kokam, and TOBN, presenting discharge curves as a function of C-rates. The 130 mAh Atomic Workshop batteries are rated to a specific power of nearly 2400 W/kg, and energies on the order of 140 to 160 Wh/kg. The Full River lithium polymer batteries also have high power and energy. The battery chemistry is the standard lithium cobalt oxide vs. carbon, so the high power is attributed to improvements in manufacturing.