Solid reliable batteries.
This review is for both the 12.8 volt 200 AH Plus LiFePO4 and the 12.8 volt 410 AH LiFePO4 batteries. Two years ago I bought the 12.8 volt 200 AH Plus LiFePO4 battery, and have heavily used this battery with zero issues. That battery was only 40 lbs, and it replaced two very heavy 6 volt Trojan batteries. Lead acid batteries are heavy, need water added, and the gas from charging corrodes terminals and is very explosive hydrogen gas. Lithium eliminates all of that. We live in our 5th wheel RV full time. We use a 600 watt solar array on the roof to keep the 12 volt system charged, leaving the "house" 12 volt converter/charger off. That 12 volt charger uses quite a bit of 120 volt current, since we pay for our electricity from the meter, using the solar array helps on the electric bill. This set up really shines while out boondocking. It is a self built hybrid system. There is an added 120 volt receptacle in our kitchen wired to a 2200 watt inverter. We use this solar provided power daily for grinding and making coffee, and also for the toaster. There is also a 500 watt inverter that runs our TV and the cellular internet gizmo. I like the fact that we can leave the TV on all day without cost. Plus of course the 12 volt lights, furnace and fans. While it is possible, we do not run the A/C from the solar array. We use 120 volt shore power for our A/C, refrigerator and hot water heater use. The Power Queen 200 AH battery has performed flawlessly these last two years of constant use. I had a fuse issue while we were away from the RV for a period of time 2 months ago, a fuse blew, turning off the array. The battery was stone dead, but recovered without issue with my solar charger once the fuse was replaced. In the last year battery prices have gone down quite a bit, so this last January 2025 I bought the 12.8 volt 410 AH LiFePO4 as an upgrade to my system. As with the first battery I bought from Power Queen, the delivery was fast with next day service. It is the size of an 8D battery and weighs an amazing 80 lbs. It is well strapped down and secure. I cannot comment on support service from Power Queen as both batteries have been issue free. But both times I bought a battery from Power Queen, I received an email, a sort of checking in to make sure I received the battery and please let us know if you have an issue. I even got a phone call on my first battery purchase, while appreciated, I do not speak Chinese and the English was nil. Reviews are important for my buying decisions, and the reviews reported for Power Queen lithium batteries were instrumental in my purchase. I would buy another battery from Power Queen without hesitation.