Dumfume 12V 300Ah (314Ah) LiFePO4 Battery Built-in 200A BMS, 4.01kWh 4000+ Deep Cycles Lithium Battery Ideal for RV Campers, Solar Systems & Off-Grid Power(2 PACKS)

Excellent battery I use it with a converter and it has worked perfectly for cases of blackouts, charging cell phones. It's easy to connect, very useful practice. I totally recommend it.

Good batteries at a good price. One came DOA, and after I got a replacement for it, I finished cracking it open to see if it could be repaired in some way. (Do not do this unless you know exactly what you're doing as it is incredibly dangerous) While what the shipper did to it had unfortunately rendered it unsalvageable, I was surprised by just how well these are made. Ring terminals and screws rather than the poorly soldered connections common on 'budget' batteries, lots of foam padding that is properly glued on, and there was liberal use of some kind of rubber or silicone adhesive on anything that could come loose. I'm pretty sure it had to have fallen out of a moving truck for it to come DOA. As for the functional ones, I've cycled them a few times and even under a decent load they always pull at least rated capacity. But, that is to be expected considering that they're actually 314Ah cells under the hood. Whether that's what Dumfume intended, or if that's just what they got their hands on at the time, I don't know and I'm definitely not about to complain about it. The only issue I have with these is the odd size, and I knew that could be an issue going into it. The only battery box I've found that will fit these without being ludicrously large is a double GC2/Group 24 box, which is still a good bit too long for them. You'll have to do something custom if you want them fully enclosed. All in all though, I would not hesitate to buy more of these or another Dumfume battery. Like I said at the beginning, they are good batteries at a good price.

I used these batteries in my solar setup for my camper and theyhave performed great.

I live in an area where we loose power for hours at a time several days each year. I use this with a 1500watt pure sine wave inverter to power my satellite receiver and various other things , I have more than one, and it is working well. Nice to not worry about the battery acid and the weight is much more manageable.

I installed a 100AH lifepo4 battery in my tear drop trailer in 2020. It was a great upgrade from the original lead acid battery. I supplemented my camping with a 200 watt solar panel to keep my 100AH lifepo4 battery fully charged. The battery powered lights, a propane detector, 12v fridge, 43 inch TV, stereo, and a propane heater. With my solar panel, I could camp without hookups indefinitely. However, if I didn't use solar to charge the battery, I wouldn't be able to last more that two nights without beginning to feel nervous. Plus, I was always looking for campsites that had some sun. In the mountains, I was constantly moving my solar panel around to get to the sun. Sometimes it would get old really quick. I began thinking about a larger lifepo4 battery last year, but the prices were still quite high and their sizes were not small enough to fit in my tight space. Then manufacturers began releasing lifepo4 batteries in much smaller sizes. I learned about this Dumfume 300AH battery from a youtuber who gave it high marks. I decided to look on Amazon for the current price and was shocked to see that it was only $305 for a limited time. It was too good to pass up. Plus, the size wasn't much bigger than my original 100AH lifepo4 battery, but twice the weight, which is understandable. It was delivered within a few days and was well-packaged with no damage to the box. I comes with handles, which makes it much easier to move around. I removed the old battery and installed the Dumfume battery with space to spare. It took quite a while to charge it to full capacity, which was expected since it is 3x the capacity. I've been very impressed with it so far. It will allow me to camp for two or three nights (or more if I'm conservative with my power) without having to pull out my solar panels. I can now just enjoy camping without chasing the sun. I can then charge it back up at home with my solar panels. Obviously, I don't really NEED 300AH for my little tear drop, but having the extra available capacity allows me to enjoy my camping trips without stressing out about power consumption. This is a five-star battery, but I'm rating it at four stars for now until I use it a bit. If it holds up, which I expect it will, I will update my review. Lifepo4 battery chemistry is changing the camping experience. I learned this first-hand in 2020. Now, I've increased my capacity three-fold and couldn't be happier.

I have a 36v EZGO TXT 4 seater running on the 38.4v 100ah variety and 48v Cushman Hauler running on the 51.2v 100ah version. When I first hooked it up to my TXT cart there must have been a sudden high current spike which caused the BMS to cut the power. Capacitors in a controller that's been sitting unused can cause current spikes. Sitting on a steep incline will require a lot of amps to get moving. Sticky brakes or a stuck brake pedal will increase resistance and cause a spike in current. I was able to wake the battery up by hooking it up to a charger. I was very cautious and went easy on the accelerator initially, but now both batteries are hooked up and powering my golf carts. They seem to be well made. The batteries came with their own wired displays. The display that comes with the 48v/52.1v colorful version displays the battery voltage, battery percentage, and real time AMP draw while in operation, compared to the 36v/38.4v version which only gives voltage and estimated percentage remaining.

Great service and seem to work ok but time will tell

Rimasta stupita dalle dimensioni rispetto alle altre batterie di pari potenza Testate e tutto e non ho nulla da ridire posso solo consigliare

Recibido 7 días antes de la fecha,de momento dos días funcionando perfectamente

This battery is amazing! I can run all the lights in my trailer and the battery charge hardly drops. I choose this battery because of Youtube videos where they open the battery and show the quality of the construction. It's legit. Customer support is terrific as well.

Gute Batterie, keine Probleme