2-Pack 12V 314Ah LiFePO4 Battery with 200A BMS 15000+ Deep cycles

I have 16 of the 12v/300ah batteries configured in series for 24v w/equalizers. I have 4 of the 48v/100ah batteries in parallel. They DO have built-in BMS contrary to one review. I ordered 4 12v batteries first, one arrived DOA. I contacted them via Amazon 'contact seller'. They responded very quickly and sent me a new battery right away! I was sold, and continued buying. I was charging the 12v @ 28.8 for a while... now I'm charging them at 30.6 and WOW talk about amazing! Now they are charging super fast (as I had expected). Regardless of how I charged them, they are always resting around 26.5 in the mornings (with or without up to 120W running overnight, usually about 40) which is darn close to 100%. Once they hit 30.6v, while still pulling a couple hundreds watts.. I'm basically powering my computers & many screens WHILE floating the batteries @ 28.8v all day!!! I use the 24v for LED lights, several mini computers, 6 cameras & DVR security system, 5x29" LED monitors, a 55" TV (monitor), some hanging fans (way more efficient than wall mounts!), and charging tool batteries and I have never seen them go below 26.4v..though I do ease up during mulitple continuous cloudy/smokey days... I have been using them w/o generator charging since Jan 1!! I use the 48v for power a 110v shallow well jet pump... they have never gone below 53.0v, I charge them @ 58.8v.. they're always resting @ 53.1. They don't like sustained medium power draws too much, but I am running a mini-fridge & 5cu freezer off them 24/7 and they are still @ 53.1/53.0 in the morning. I ran some heat tape off them last winter before I got the fridge & freezer.. both configurations consume a steady ~75v overnight. I love them all, even w/the toxic name lol. I'm sure they're off-gassing WAY less than the 12v lead-acids I was using before. I keep them in the basement, where I have 3 blue flame propane radiators that heat the whole house...so in deep winter w/temps outside below zero the basement was around 95 degrees all winter (will only be around 80 this winter). I keep the batteries on metal wire racks, all positive wires properly fused. Nothing ever got hot, shut down, threw a warning beep or anything. I keep the inverters on the lowest rack just off the cement floor because they're the only thing that gets warm. With a large configuration like this, I would have an exceptionally difficult time trying to draw enough simaltaneous voltage to actually cause any cell warming at all. Even when I'm pulling 1000w off the 24v... that's split across 16 batteries so about 60w/battery..trivial. I paid 25% less than they are now in Nov/Dec 2025..but still a great price and not a very big increase really, considering what 2026 has wrought! Highly recommend! And yes, my roof is COVERED in panels :) BTW, the Rene battery monitors in the pics voltage is always accurate but the % & AH is always off by a mile.

Been using to dry dock camping across the US this summer. with 500 watt solar panels it runs my camper very well.

This has been a solid solution. I've been using a pair of them to power my diesel heaters this winter without problems. I have four 100w solar panels and have experienced zero issues. I contacted customer support with questions and received a prompt and well informed reply. Good product, good company. A good value.

I like how the 2 bolts and 2 washers do not separate which makes it very easy to change out. Very light weight for me. With the handles you can easily pick this up with one hand. I used this battery for about 10 full cycles and it charges to 14.4 or 14.5. Warning!!! before using LifePO4 batteries, know how they differ from Lead Acid Batteries. You can kill LifePO4 battery by discharging it and leaving it in the cold. Also, need to understand the BMS. For example, the BMS will shut off the battery after discount for 30 minutes before allowing you to charge it. I later bought the Dumfume 12v 300ah and just started using it.

Arrived "DEAD". Zero volts and none of my lithium battery chargers would wake it up or even attempt to charge it. They replaced it and the replacement is operating as advertised. Thank you for the replacement.

Go to Dumfume.cn and read the warranty on the Dumfume web site. I thought I was buying from Dumfume and would be able to qualify for the 5 yr warranty by registering my battery, only to find out that they consider the Amazon Dumfume store where I purchased it to be third party and not warrantied by Dumfume. However the 600ah lifepo4 battery arrived fast and in as new shape, it came about 60 percent charged and took my charger about 20 hours to balance. It is at full capacity now and working well. I did get a fast response from the company after emailing them asking about the warranty, so perhaps if I had not assumed that I was buying direct I would have a 5 yr warranty.

Dumfume builds quality batteries. This will go in my Puma fifth wheel toy hauler. Excited to be off grid with no worries.

Real world test! I put four of the 12V 100Ah mini batteries on my boat to make a 12Volt 400 Amp hour bank. The bank is now at -411 Amp hours and still holding 12.6 volts!!! The bank finally dropped below 10 volts at -460 Amp hours!!! The batteries hold a high working voltage (Greater than 12 Volts), even with a 10-20 Amp load almost to the very end. It's also supposed to have Bluetooth monitoring, but I can't figure out how to make it work. However,,, Absolutely NO WAY to contact the manufacturer for help!!! Website doesn't work and I can't see any way to contact them from the listing.

Buen artículo, un poco caro, eso si

Cette batterie , montée pour alimenter la cellule de mon camping car me satisfait pleinement . pas de problème .

chargée 2 barre ....pour une 300 amp c juste pénible.....j espere qu elle va tenir la charge....

Ottima! L' amperaggio descritto è effettivo

Tiene bastante potencia retiene bien la carga no le doy cinco estrellas el tiempo le pondrá la quinta estrella de hecho voy a comprar otra