High-quality rechargeable replacement battery for Leagoo M9. Replace your old, worn out or damaged battery with this new high-quality battery. Please, this is a new battery, don’t use your car battery, generator or power bank to charge it for the first time. Charge only with ‘NEPA’ light. After the first charge, you can use any other source of electricity to charge it. Charge at least for 8 or ten hours before use.