TELESIN Dual Battery Charger for Wifi Remote Control Charger with 2pcs Batteries for Gopro Hero 4Charger Features:Brand: TELESINDual slot design、 you can charge 2 batteries at the same timeSmart LED indicator shows the charging statusAutomatic constant current control、 prevents battery from overcharging、 short circuit、 and electronic shockCompatible for Gopro Hero 4 BatteryInput : 5V 2AOutput: 4.3V 800mA(X2)Battery Features:Model: AHDBT-4013.8V 1200mAh 4.56WhImported A grade high-capacity and high-quality batteriesBuilt-in PCM smart battery protection circuit、 with anti-overcharge、 over discharge、 over current (short circuit) and overheat protection functionUsing lead-free SMT process、 in line with environmental requirements. Charging process can be done quicklyAbsolutely no memory effect、 easy and fastPackage Included: 1 x TELESIN Dual Battery Charger2 x AHDBT-401 Batteries1 x USB CableDetail Pictures: