Our batteries are made to the exact specifications as same as the original battery. Every battery is with strict spec detection and use testing, absolutely ensure the safe and durable use of the battery.Overcharge, over discharge, over voltage and short circuit protection for better battery life Compatible with Models: GC3 Panel SP1-GC3 Dimensions: 89.5 x 38.0 x 8.0mm Weight: 120.0g Voltage: 3.7V, Capacity: 3800mAh, WH: 14.06Wh Certificated with ISO9001, RoHS, CE, UN38.3, and MSDS