There is an on/off switch on the battery. Can be used to 12V power in various fields. 3000mAh、 4800mAh、 6800mAh and 9 8 00mAh are 12V 2A and can be used with devices with power b elow 24W. Devices with power above 24W are prohibited from use.
12V DC Rechargeable Lithium-ion Battery Portable Battery Pack w/ Charger Switch
