Charge Any place: Connect with any USB port (mobile phone charger, power bank, computer USB port) to charge the battery
Charge 3.7 V Li-ion battery, such as 18650 / 14500 / 26650 / 16340 batteries
Protected design: Connect with any +5V USB port for charging, very Protected voltage
LED indicator: Charging-RED; Fully Charged-GREEN
WARRANTY: one hundred% Satisfaction guarantee and friendly customer service inside a 24-hour improve. Any questions with these solar lighting – Contact us- and you’ll get 60 days free go back & 18 months free replacement warranty.