The Portable Battery Pack is a rechargeable power supply compatible with any of Alloy LED’s 12V DC LED fixtures or 12V LED tape lights. This long-lasting lithium-ion battery includes an adapter for fast recharging and a DC plug cable that connects directly to fixtures with a DC plug and to the Tape Light DC Plug Connector (compatible with PrimaLine Tape Lights). The battery includes a DC Adapter for charging and a 39 inch DC plug extension cable.
To calculate the battery life (in hours) for a fixture, simply divide the 3800mAh (milliAmp hours) battery capacity by the mA (milliAmps) figure listed in the “power consumption” specification of the fixture. For example, 1 foot of PrimaLine 1.5 12V LED Tape Light uses 120mA of power. Divide the battery capacity of 3800mAh by 120mA, and the result is 31.6. So one foot of this tape light can be powered for 31.6 hours.