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NERMAK

12V 50Ah Lithium LiFePO4 Deep Cycle Battery, 4000+ Cycles Lithium Iron Phosphate Rechargeable Battery for Solar, Marine, Home Energy Storage, Off-Grid Applications and More, Built-in 100A BMS

    • Based on 2,030 reviews
Condition: New
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Availability: 20 left in stock
Fulfilled by NERMAK
Arrives Nov 28 – Nov 29
Order within 11 hours and 34 minutes
Available payment plans shown during checkout

Style: 12V 50Ah


Features

  • Superior Performance: Lithium iron phosphate battery has high energy density, Long cycle life, Good safety performance, No memory effect, etc. NERMAK LiFePO4 battery has built-in 100A BMS protection to prevent overcharge, Over-discharge, Over-current and short circuit, and excessive low self-discharge rate ensuring up to 1-year maintenance-free storage.
  • Long life & light weight: 4000+ cycles of lithium-ion batteries are no problem, while traditional lead-acid batteries only have 200-500 cycles. The battery does not contain acid, which is safer and more environmentally friendly than lead-acid batteries. Our lithium iron phosphate battery weighs only 10.6 pounds, which is only 1/3 of the weight of a lead-acid battery.
  • Widely Uses: Widely uses in most areas such as: Wheelchair, Emergency Lighting, RV/outdoor camping, Marine, Golf Carts, Trolling motor, Home Energy Storage, Computer Power Backup, Off-Grid applications, Solar Panel Wind Energy Storage and more...
  • Expansion and RechargeCan be connected in series or parallel, in series, Up to 4 identical batteries can be connected,Quick charge by 25A , and heavy-duty output discharge up to 50A continuous and 3C Pulse.
  • Warm Note: 1* 12.8 Volt 50Ah Replacement lithium ion battery,12 months warranty, If you have any question for our product, Contact us: click the "Ask a question" on our storefront or in "YOUR ORDER" options click the "contact seller" (please use LiFePo4 special charger, with fully automatic SLA charger may not be fully charged)

Number of Batteries: 1 Lithium Ion batteries required.


Brand: NERMAK


Battery Cell Composition: Lithium Ion


Recommended Uses For Product: Emergency Lighting,Wheelchair, Trolling Motor, RV, Marine, Solar,Trailer


Unit Count: 1.0 Count


Product Dimensions: 7.5 x 4.9 x 6.3 inches


Item Weight: 11 pounds


Item model number: 1250


Batteries: 1 Lithium Ion batteries required.


Is Discontinued By Manufacturer: No


Date First Available: April 17, 2022


Manufacturer: NERMAK


Country of Origin: China


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Nov 28 – Nov 29

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Great batteries
Style: 12V 10Ah-2PACK
I used these to replace the dead lead batteries in my UPS, the fit was perfect and they hooked up just like that where supposed to. The best part of it is the ups is about 5 lbs lighter than before. I also have my ups hooked up to monitor thru the computer and it is working flawless. I recommend them. ... show more
Reviewed in the United States on August 20, 2024 by Brian
    • Very interesting capacity test on this 12v 10Ah battery
Style: 12V 10Ah
First of all I am an electronics hobbyist and I repair electronics as a hobby and have used all types of batteries extensively for a long time. I'm quite familiar with the different chemistries and how to use them and care for them. In the last week I have purchased 4 LiFePO4 batteries ranging from 6Ah to 20Ah. This particular 12v 10Ah battery was noticeably heavier than the other 12v 10Ah batteries I received from other brands which struck me as a bit odd. The thought being that either the batteries were more dense meaning more actual internal contents that comprise the battery, or a marketing gimmick to make them feel heavier which might imply a better quality battery. So as always with new storage batteries I set up and ran a full discharge capacity test. With this one at least the results were surprising. After fully charging the battery I ran a discharge test at 500mA. The result was 11.870Ah. For all intents and purposes, 12Ah. Not sure if this is actually a 12Ah battery mismarked as 10Ah or what but it is what it is. I don't see others getting this capacity from these 10Ah batteries so it may be unusual. Still, pleasantly surprised. Some people have reported that these batteries were not good for running their computer battery backups and the explanation is simple. These 10Ah batteries are rated for 10A continuous current draw. It is very common for modern desktop PC's to draw more than that. Especially gaming machines with high powered cpu, graphics and power supplies and large monitors, multiple fans etc. While similar sized lead acid batteries might supply significantly more current, in a case like this the BMS in the lithium Phosphate battery recognizes the overload and shuts the battery off. There is no BMS in lead acid batteries so they can give all they have until depleted. I would personally recommend at least a 20A momentary and 15A continuous rated battery for a battery backup. That would allow some surge overhead. This is my first Nermak LiFePO4 and so far better than so good. How long it lasts and durability are yet to be discovered. ... show more
Reviewed in the United States on March 25, 2024 by Randy H
    • Outstanding Quality Battery
Style: 12V 10Ah
Review Image by Dave Dave
Review Image by Dave Dave
Review Image by Dave Dave
Review Image by Dave Dave
Review Image by Dave Dave
This review is for the NERMAK 12V 10Ah Lithium LiFePO4 Deep Cycle Battery, 2000+ Cycles Rechargeable Battery: This is my third one from Amazon and I have to tell you I am well pleased with these batteries. Excellent price and performance to boot. I primarily build solar power storage boxes from these batteries and others. This particular model can store up to 128 Watts of usable solar power for camping lights, phone and tablet chargers and more. And if you add two of the same type in parallel you can get double the wattage. I buy the box from H.F. for a few bucks, and the four Marine adaptor kit on Amazon. With a little work with a dremel and drill you got yourself a low cost camping solar charger. You can get yourself a wall charger and/or a 25 Watt solar panel to recharge your battery. My battery arrived with a 13.32V charge stored on it. My charger stated that was about a 60% charge. So before using, I put a proper LiFePO4 charger on it until it was fully charged. I love how the kit I order lights up. You can get it blue, green and red lights. I can highly recommend these low cost batteries for your next project. ... show more
Reviewed in the United States on July 10, 2024 by Dave Dave
    • Works great until it dies
Style: 12V 10Ah-2PACK
Update: Bumped from 2 star to 4 stars since seller offered a refund for the batteries The batteries replaced my lead acid batteries perfectly and they did power my devices when the power was out. However, they died and stopped charging less than a year after putting them in. I purchased them in October 23 and they stopped working August 2024 ... show more
Reviewed in the United States on August 10, 2024 by Abhi
    • Wonderful battery!
Style: 12V 20Ah
I originally received a faulty battery and once I communicated with the seller they offered to send out a replacement without hesitation! Customer service is wonderful and pleasant! I received the replacement battery and this battery works without any issues! This battery is the 20AH lifepo4 and it very lightweight and compact for its size! Material feels well made and sturdy. Highly recommended! ... show more
Reviewed in the United States on August 6, 2024 by Josh
    • Great power for an excellent price.
Style: 12V 16Ah
Much lighter than my old battery Use it to start my lawn mower, and power the backup camera on my travel trailer. Works great for both applications.
Reviewed in the United States on August 6, 2024 by Bruce D.
    • Seems like it’ll work…
Style: 12V 20Ah
Review Image by Kindle Customer Kindle Customer
Review Image by Kindle Customer Kindle Customer
Review Image by Kindle Customer Kindle Customer
For the price, I’m very happy with the 20 Ah battery. Negatives: The BMS on it isn’t very robust, and if you short out the battery it’s gonna break. Positives: It has real cells in it, not little polymer pouches. It has 43180’s, or something like that. They should be 20 AH each, so the battery should be 20AH as a whole. I tested it with my uncalibrated capacity tester, and came up with 18.55 AH. With all the variables, I’ll take it as a pass. I’ll keep it! ... show more
Reviewed in the United States on July 20, 2024 by Kindle Customer Kindle Customer

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