Product Information: Voltage:3.7V Capacity:1000mAh Compatible with these models : SJRC S20W T25 Specifications: Batteries come equipped with built-in protection mechanism for safe charging and use. safety use: using high quality aluminum board with good sealing ,make sure it antioxidant, heat-insulation and anti leak fluid. Guarantee more flight time, high drain lithium-polymer rechargable battery. battery connector is exactly same shape with the original battery ,no loose problems. Cool down the battery before your next flight or recharge；Light weight and easy to carry, put in your pocket when flying drone outdoors. Package Content: 2PCS 3.7V 1000mAh lithium battery