The battery pack can be charged full about 2.5 hours. Do Not charge it for more than 6 hours.
Avoid using the electric mop while it is charging to prevent battery life from being shortened.
Charge it when only one red indicator is on.
The battery pack belongs to lithium battery. The battery pack can be charged separately, so you can be free to mop the whole house without hard-effort.
2600mAh Battery Pack ONLY for iDOO ID-EM002-WH-N1 Cordless Electric Mop (B0BD7FNNJR).