2 Pack 12V 50Ah LiFePO4 Lithium Battery, Built-in 50A BMS,640Wh Capacity, 6000+ Cycles, Low-Temp Protection,Perfect for RV, Camping, and Home Energy Storage

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.

I have four of the 150ah units and am extremely pleased. All have exceeded rated capacity by about 7ah when new (makes sense as this is basically 1/2 of their 314ah battery). I have to physically carry the battery from point of use to charging station- approx 100yds each direction across uneven ground. I could do it, but it wasn't the favorite part of my week. I needed easier portability than I had with my 300ah (non Dumfume) batteries that weigh between 66# -72#, and these 150's weigh in at 24.5# and are easily moveable. I have an older160ah battery from another brand and it weighs 37#, and my shoulders can really feel the difference that extra weight makes. I've been impressed with the quality, and they are working well in my application. I charge at 50A using a smart charger usually and they seem to like that rate, and I have never had an issues with getting them to accept charging when new. My oldest Dumfume battery is about 1 year old and after a year of twice weekly charging, it still exceeds rated capacity, so I'm expecting good things from all my Dumfume batteries. So far, so good. Simple battery. High value. And in my case, life improving. Lastly, one of my batteries came in damaged, appearing to have been hit by a forklift fork that sliced through the box and cracked the battery case. Dumfume sent a replacement quickly with no hassle at all. Very pleased. I'll be buying 12 more batteries over the next couple of months (4ea-150/314/600ah) and unless something changes, Dumfume will be my go to for all of them.

I wanted to wait a little before leaving my review because I had been traveling and really wanted to test these batteries properly before recommending them. I bought them for my home solar setup with an inverter and solar panels, and honestly, they have exceeded my expectations. The 24V 100Ah capacity is definitely noticeable. They provide very stable power and last a long time for daily use in my system. Connecting them to the inverter was simple, and everything worked smoothly right from the start, which I really appreciated because I didn’t want any complications. While I was away, it gave me peace of mind knowing the system would continue running reliably, and when I came back everything was still working perfectly. So far, they’ve performed extremely well and feel like a great investment for my home. The only thing I would improve is including a more detailed instruction manual for people who are not very experienced with solar installations, but aside from that, I’m very happy with this purchase. I would definitely buy them again.

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.

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.

These batteries are priced right and deliver the amps when needed. Put 2 in my RV to replace 2 wet cell batteries. The only drawback is no Bluetooth connection. I had to buy a Bluetooth battery shunt so I can manage the power.

Test of 1200 watt Ampinvt low frequency inverter supplied by Dumfume 100 AHr lifepo4 bubattery operating 8000 BTU Midea inverter window air conditioner. Load is 35%. Battery arrived with good charge. Does a good job. Inverter is $165, battery is $150. AC uses 435 Watts at 107 volts. 4.8 amps. This is just a trial for an installation into a cabin bedroom. Just FYI if you want to set up a least expensive power option. 👍🏻

These batters have been working great for my home system. They can handle my small microwave or toaster oven one at a time. This time of year with the panels charging them, running three refrigerators, all my lighting, my computers, they might drop to half there capacity by the time the next day charge cycle begins.

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...

Batteria utilizzata da ormai quasi un anno in camper con inverter collegato e ricaricata da pennelli fotovoltaici,la capacità effettiva secondo il test è di circa 300ah perciò corrisponde a quella nominale della scheda. Testata anche in scarica con correnti fino a 120a e non ha dato nessun segno di cedimento. Vedremo nel tempo se rimarrà affidabile con i cicli di scarica e ricarica ma per adesso la consiglio vivamente se uno volesse passare al lifepo4 a prezzo interessante.

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

ACHTUNG: Dieser Akku ist nach nur einem Lade-/Entladezyklus ausgefallen. Er nimmt überhaupt keinen Ladestrom mehr an (0A) – getestet mit professioneller Victron-Ausrüstung (MultiPlus-II und Phoenix Smart Charger). Beide Ladegeräte funktionieren einwandfrei. Normale Nutzung (~500W Last) Keine Überlast Keine Fehlermeldungen Akku lädt einfach nicht mehr Der Support wurde mehrfach kontaktiert – keine Antwort. Für ein Produkt in dieser Preisklasse ist das absolut inakzeptabel. ❗ Wenn Sie ein zuverlässiges Produkt erwarten – Finger weg.

Ahí en la foto hay solo 1 pero en realidad compramos 2, la otra la pusimos luego!!! Le pedí al vendedor si me las podía mandar antes y lo hizo, tuvo excelente predisposición y contestaba todos mis msjs!!! Muy buena atención!! Cuando me llegaron, las cargamos al 100% y ya están ambas en nuestra autocaravana y funciona todo perfecto!!! LAS RECOMIENDO