Use the Bitcraze battery charger to always have your spare batteries full to maximize your flight time. If you’re a bit handy with a soldering iron you can even solder multiple chargers together for multi-battery charging.
• 500mA single-cell Li-Po battery charger
• Charging indicator
• Connection points for chaining of multiple chargers
• Max charging current: 500mA
• Supply voltage: 5V
• μUSB charging connector
• Based on the MCP73832 single-cell Li-Po charger