100% Authentic IMREN 25RS 18650 2500mAh 15A Battery, Flat Top

I used these batteries because I required a relatively low current drain over as long a period as possible. The application is as a short term UPS to run a LED lamp during power failures. I created another set of devices (without the inverter) for 12 volt lamps that did not have any available commercial power. Current drain for the 12v regulator is relatively low providing long standby time. Run time for a 60W 12v LED lamp is well over 8 hour on a full charge.