Review on Mroinge 12V 2A Smart Battery Maintainer for Lead Acid & Lithium(LiFePO4) Batteries – Ideal for Cars, Motorcycles, Lawn Mowers, Boats, ATVs, SLAs, AGMs, Gel Cells, and More by Jeff Rhodes

I have been using the SLA version for several years to service 12v 7 or 9Ah batteries in 9x6x3 cases in RV Park's mesh array. The battery pack (this one) fits in the park's 30-50Amp switch box (or fits under a deep 120V outdoor weatherproof outlet cover) and the 12-24V or 12-48V Poe electronics fit in a 9x6x3 case with cat cable for poe wifi. at the top of the pole. NOW for just a dollar more for the same battery, a little more post-failure amps AND the ability to upgrade SLA to Lithium. Best of all and critically yes, you switch to SLA or Lithium and it reverts to the previous setting from shutdown. Win, win, even if you have already upgraded to a small lithium battery. Of course why stop here, add patch cords for tool free repairs all plus a patch on the volt amp display for a cool factor. Of course, everything in the picture is on Revain!.