18650 Battery USB Charger 4 Slots 3.7V Li-ion Battery Power Over-charge Protection

Features:
4 slots independent charging, non-interfering.
Dual charge indicator, red light is up when charge, green light is up full power.
Automatically stop after fully charged, do not over-charge.
Compatible battery model: 10440, 14500, 16340, 16650, 14650, 18350, 18500, 18650.
Six protections: over-charge protection, over-current protection, over-temperature protection, short circuit protection, reverse connection protection, over-discharge protection.
Compatible with multiple USB charge devices.
4Pcs 18650 li-ion batteries, high discharge efficiency, more than 1000 cycle charge times.