Goui Rechargeable AA Battery (2Pcs)

Connect the cable to the battery ana an appropriate USB power charger (mobile phone adapter, laptop, power bank, car charger, etc.)
You can charge several batteries at the same time.
These rechargeable batteries are pre-charged (30%) and ready to use straightly from the box.
They will hold a full charge for up to 12 months when not in use.
Recharge it before use if standby over 3 months.