1 Cell Li-Po Charger

I designed 1 to 2 lipo charger in order to be able to charge 2 lipo batteries at same time with one USB input.

each charger module is capable to charge either at 100mah mode or 500mah based on the setting on a slide switch.

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Due to the simplicity of the design, this charger is also widely used in UCLA IEEE's Micromouse program 
Charging multiple batteries