These 100mAh batteries are the perfect size, weight and shape for the Estes Proto X / Hubsan Q4 nano quadcopter. They also feature the right connector to make them plug-and-play compatible with the Proto X - that's right, despite what they say about the Proto X's battery not being replaceable, our battery is designed to plug directly into the quad's main board - no soldering or adapters required. Also, the canopy will fit the same way it does with your stock battery! These batteries also feature built-in overcharge and overdischarge protection circuits to keep them in optimum condition flight after flight.
Charge up to 6 of these batteries at the same time using our Paraboard for Blade mCP X and mCX/mSR Lipos (the Proto X & Hubsan Q4 utilize the same connector as the Blade mCX/mCX2/Nano CPX and several other Blade/Parkzone aircraft).
Dimensions (each battery):
Length: 20mm (0.8 in.)
Width: 14mm (0.6 in.)
Height: 6mm (0.2 in.)
Weight: 2g (0.1 oz)
