... 7.5V,500mA.2.Bottons:On/Off,Set color,charger hole,instruction light(color green when battery full)3. ... 7.5V,500mA.2.Bottons:On/Off,Set color,charger hole,instruction light(color green when battery full)3. ... the bucket into the water,the light and the charger will be damaged and no lighting come out.Application ... t.c. Rechargeable LED Ice wine Bucket/beer holder(color changing led light, led wine bucket)