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)

Great budget battery. Ive been using four of them in series to extend the power of my AC300Max to power my small camper during hunting season and they have performed flawless. I plan to buy two of the 600ah ones from them in future to permanently mount in the camper next. Side note, Im in central Louisiana and we do not have to worry about cold with them at all.

Almost one year in and they are working great. Installed on an off grid liveaboard sailboat with solar panels.

this is a replacement unit I purchased after the first one failed to recharge due to its faulty cold temperature charging protection. It is a great value for 300ah battery for only $300. It worked well for me until it stopped charging at the freezing temp which was a feature. However, even after the temp bounced back to 40Fs it wouldn't charge. Finally after the temp hit mid 50Fs it started charging again. Needless to say, the defective unit had to be returned and now I have a new unit. I will report back if there is the same problem.

Purchase (2) for my 24v trolling motor. Long lasting charge, very light, great value for your dollar. 10/10 would buy again.

Quality materials, heavy but hand able , easy to install and long lasting life battery. I’m very happy with the purchase

Great price, great performance, and amazing support We bought a new camper with a 12v fridge, two lead-acid batteries, and 200w of solar. On our first trip the batteries didn’t even last through the night, so I started looking into lithium. Dumfume had solid reviews and was half the price of the big brands, so I gave it a shot. The difference was huge. The Dumfume battery kept the fridge running all night—even on cloudy days—charged much faster than my old setup, and even let me run the Keurig in the morning without issues. It recharged to full in about 20 minutes. I realized I didn’t even need a second solar panel. On a later trip the battery failed unexpectedly and wouldn’t charge. I contacted Dumfume through Amazon and was impressed: support responded quickly, walked me through troubleshooting, and when the battery wouldn’t recover, they shipped me a replacement by FedEx 2-day so I’d have it before my next camping trip. I didn't expect that. I expected maybe a partial refund at the most. I was in a real bind too because my next trip was in a week and all the other batteries I saw on Amazon wouldn't be shipped in time. For the price, performance, and the level of support, this battery is absolutely worth it.

I have purchased a total of 4 batteries. 2 from Amazon and 2 from the dumefume web site directly. they were purchased 1 battery a month. first and last purchases were from Amazon. the 2 that came directly from dumfume had a 13.0 and 12.9 volts. they both charged to 100 percent with no problems. the 2 that came from Amazon had 12.2 and 12.4 volts. they would not charge. i hooked another fully charged lifepo4 battery in parallel to the non charging battery. i then hook a 20amp charger to the non charging battery. it then charged fine. i waited 24 hours then recharged each of them. i was surprised that it took another 10-15 minutes of 20amp to top of all 4 batteries. This process was done when each battery had arrived. note that one of the batteries from Amazon came in with a hole in the box. the battery appeared not to be dented or damaged. PRO: 1: this dumefume 150ah lifepo4 battery is priced good. 2: i like the fact that it is not a smart battery. i have no cell phone and did not want or need the blue tooth feature. 3: external seems to appear to be well built does not feel cheap. no clue on interior. 4: they are light weight for the size and amperage of the battery. CON: 1: did not like the fact that i had 50% of the batteries were not able to be charged and needed a "jump" charge from another battery to get it to work. a little concerned on the bms settings because of this. i also wondered if this was caused from used cells or not. 2: no more room in the house for another battery purchase. NOTE: i have purchased these batteries to supply additional power when attached to a power station. they work great in recharging those power stations. these batteries are being used a power storage and will be sitting on the shelf for an emergency. it will be interesting to see how they hold up over time. i would have liked to see a teardown of the 150ah. there are a few online for the other amp hour versions. CONCLUSION: i like this battery. its a new frills, non smart lifepo4 that feels good to hold. dumfume does have good deals both on Amazon and there website from time to time. If i had room in my home and/or needed another battery i would purchase it again. only minor issue is the charging of this battery and long term (calendar time) will "age" well. i am happy with the purchase.

So far these batteries are very reliable and have been fantastic batteries. I love the temporary terminal inserts while I was installing everything and screwing in the posts was easy, it even came with extras.

The 3840Wh rating is quite true. Great product. It doesn't overheat during discharge with a 875 watts heater fan and doesn't warm-up at all with a 15.5 amp charger but it does take many hours... which is perfectly normal. It is a pretty heavy battery so not very portable. It's nonetheless light if you consider the power output of this device!!! Just used it twice so a durability update might be necessary... To be continued...

Dumfume 600ah Bought this to replace a couple of 100ah LiP04 for my Bigfoot 2500. The battery is as described, no fancy case but the shell seems to be built well. What can you say it works, and it’s nice to see these large capacity starting to hit the market. I suspect we’ll be seeing more manufacturers putting these big boys out. No BT, no heating, less to go wrong. The size is astonishingly small considering that it is a 600ah battery. The price was pretty good for August of 2025 but I hope they will go down. It is pretty heavy so mist folks will want a helping hand placing it.

Es perfecta y va muy bien

Rundum zufrieden. Gesamtkapazität kann ich noch nicht sagen. Aber sie laufen einwandfrei, kamen top verpackt an und habe sie schon im Einsatz. Ich hoffe, dass der Temperaturschutz korrekt greift, wird aber auch noch über victron zukünftig abgesichert. Preis Leistung ist richtig gut. Gibt mehrere Tests auf YouTube