Noted :

1. To preserve battery lifespan use and recharge at least once every 4 months.
2. Please completely full charge the power bank in first usage.
3. Keep the battery dry and away from moist and corrosive materials.
4. Please make sure that use standard cable with appropriate specification, or it may lead to the power bank damage.
5. Do not drop,knock,disassemble  or attempt to repair it by yourself.