Hi,
I had AGM (4X6 Volts, Total 800AH, 400 usable) batteries in my Dynasty 2009 and although I was able to spent the night with some spare power to start the Gen in the morning, it was a stretch. We have two Cpap running continuously and the AC fridge and a lot of other power eaters.
I decided to go LFP and ordered 5X170AH (850AH usable power) Renogy batteries who appeared to be good quality at a good price. Also, I had to upgrade the Board in my Magnum 2800 Inverter/charger and change my Magnum ME-RC remote to provide a LFP profile. Also, I removed the BigBird relay and installed a DC/DC charger to provide charging with Solar and/or Alternator.
I thought I was home free BUT I forgot one thing. While dry camping I happened to get the coffee maker, the blender and the toaster on which got the Inverter breaker to pop. After, resetting it I found that the batteries where less and less capable and would not charge properly.
Let's move 6 months later and ALL my batteries where dead. Won't charge at all (They stay at around 3 Volts). I called Renogy who gave me a lot of things to try but nothing would work. Thanks Renogy, they honoured their warranty and sent me 5 replacement batteries.
Unless, somebody can explain me differently, I think the BMS's in the batteries being 100AMPS failed and brought the rest of them down.
Now, I found 2X480A/H Vicmax Battereis on Internet that comes with a 250AMPs BMS. I installed them and wasn't expecting much BUT they work great. Even with the toaster and Microwave on they stay up and provide ample power for a couple of days without running the Gen.
I have 5 brand new Renogy batteries for sale...
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