Working on a Digital Signage project for work. We needed to be able to power a 110VAC 82 Watt TV with batteries for 4+ hours. I ordered some 12v 9800aH Lithium Ion packs from China and 110Watt inverter. Seemed simple enough. Hooked up 5 packs in parallel and away we went. 2 hours in and the inverter beeped signaling a low battery charge then it went off.
I've since hooked these packs to a 12V 40watt load and ran that for an additional 4-5 hours under the same charge. I noticing that the inverter requires a minimum of 10.5v to run and the Lithium Ion packs are only producing 9.6v after about 2 hours, however they continue to push above 8v for several hours. This must be what is causing the inverter to power off, but what do I do about this? The obvious solution to me is to find some DC/DC step ups, but I'm having a lot of difficulty finding one that doesn't ship from China, or that is rated high enough to push 82 watts.
Anyone have any ideas?
I've since hooked these packs to a 12V 40watt load and ran that for an additional 4-5 hours under the same charge. I noticing that the inverter requires a minimum of 10.5v to run and the Lithium Ion packs are only producing 9.6v after about 2 hours, however they continue to push above 8v for several hours. This must be what is causing the inverter to power off, but what do I do about this? The obvious solution to me is to find some DC/DC step ups, but I'm having a lot of difficulty finding one that doesn't ship from China, or that is rated high enough to push 82 watts.
Anyone have any ideas?