Battery Charger for the SpinWave Cordless Hard Floor Spin Mop, Series 2315. On the FIRST use, make sure the unit is FULLY charged before use. To check the battery status, turn the unit ON by pulling the handle back and pressing the power button. Battery is fully charged when all three blue status lights are illuminated. To charge the battery (Be sure to charge the unit when there is less than 10% power left, one LED flashing blue): Before charging, make sure unit is off by ensuring the battery status indicator lights are not illuminated. Insert the charging port on the back, right side of the unit. Plug the adapter into a suitable wall outlet. The battery status indicator lights will illuminate when charging. For maximum run time, charge unit for 4 hours prior to use. Battery Charger for SpinWave Cordless Spin Mop 1614563