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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 2,285 reviews
Condition: New
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$119.99 Why this price?
Holiday Deal · 8% off was $129.99

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This item's return window has been extended for the holiday season: Returnable until Jan 31, 2025

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

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Availability: 20 left in stock
Fulfilled by NERMAK
Arrives Jan 3 – Jan 4
Order within 23 hours and 55 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: Jan 3 – Jan 4

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 Customer Service
Style: 12V 10Ah-2PACK
Got these batteries 6 months ago and they worked very well in our kids ATV. they last a long time. for some reason, one battery stopped taking charge. Talked to the support team thru chat which was a bit hard to find with fault of amazon. but they responded fast and they helped right away!
Reviewed in the United States on November 21, 2024 by Racermp
    • Good portable LiFePo4 battery for POTA activations
Style: 12V 20Ah
Bought this LiFePo4 battery to do POTA activations. Very lightweight and can run several hours drawing ~20A and putting out 100W. Charges in about 3 hours. Good so far. I would only suggest slightly larger terminals.. connecting terminals from a radio or from my charger takes some careful effort due to these small screw terminals. Slightly larger terminals would make things better. ... show more
Reviewed in the United States on November 21, 2024 by Matthew Steger
    • Good replacement battery for my UPS
Style: 12V 10Ah-2PACK
This is a good replacement battery for the UPS that came with our internet modem. I fit right in and works just fine. I tested for about 15 minutes and it held.
Reviewed in the United States on December 3, 2024 by AL
    • Didn't last long...
Style: 12V 20Ah
Worked great while it lasted. Had it hooked up to a chicken coop door and 30W solar panel. After about 4 months (just outside support window) it stopped taking a charge from either the solar panel or a battery charger after I hooked it up. Eventually just degraded down to 1V. Maybe I got a dud... *** Seller contacted me and offered a full refund which is generous since product is outside return and support window. I’d already replaced the battery but I’d give it another shot especially since they backup their product. I upped to 4 stars based on product support. ... show more
Reviewed in the United States on October 21, 2024 by cmdr_striker
    • These are great batteries!
Style: 12V 10Ah-2PACK
Replaced the factory type SLA 12v, 7Ah batteries in my old E300 with these, which are noticeably lighter and now I'm getting much more range, plus experienced a slight increase in top speed. Even found out the charger I was using is compatible, which is a bonus. All e-scooters and e-bikes should feature this battery technology. ... show more
Reviewed in the United States on November 2, 2024 by Steve C.
    • Update - failed within 1 day
Style: 12V 18Ah
Review Image by RCAddiction RCAddiction
Update 4 days later, 10/11/2024 Well...this did not work out. The battery arrived and was installed on Monday, just before Hurricane Milton struck Wednesday night. After a1/2 second test crank (which was fine), the battery was connected to a new LiFePo4 battery charger designed for this battery chemistry. The charger itself may be suspect, as the battery would not accept a charge. The charger displayed a fault mode after a few hours. I then connected it to a known good charger. After a charge of several hours at 2amps, the charger had to be disconnected as we prepped for the storm. A quick check on Tuesday (the next day) found that the generator would not start. Did not have time to do diagnostics with the storm coming. Had to pull-start the generator after we lost power Wednesday evening. Did diagnostics today, Friday 10/11. No problem with the starter motor, as it started immediately with my portable jumper pack. The Nermark battery showed less than 10V on my DVM. Both chargers displayed a battery fault, and were unable to charge the battery above 10.3V. It's possible there was an issue with the built-in BMS (Battery Management System), but I don't know. It's getting returned once Whole Foods is open again. Original Review 10/7/2024 Very simple installation to remove the old sealed lead acid 12-18 battery and replace it with this one. I have been using LiFePo4 batteries in my RC aircraft for over 20 years and I'm glad that this battery is available to replace the typical unreliable lead acid battery that is used as a starter in portable equipment. I took the opportunity to install the terminal rings and cable for the appropriate 3 amp charger and even without completing the charge, did a quick test start on my generator. I hope it will last several years, as this generator is only used for hurricane emergencies. However, I have batteries of this chemistry that are over 20 years old and still hold 80% or more of their charge. I will report back and update this review in the event that there are any failures, or possibly great news to continue to report years from now. ... show more
Reviewed in the United States on October 7, 2024 by RCAddiction RCAddiction
    • Setup went perfectly into my APC UPS!
Style: 12V 10Ah-2PACK
Managed to get the lead batteries out of my APC, then swapped to these Lithium batteries. I now get approx a 2 hour run time with this setup! Super affordable alternative and definitely recommend!
Reviewed in the United States on December 3, 2024 by Doodle
    • Economical, Portable, 12V LiFePO4 Battery for Tire Air Inflator and Other Car Accessories
Style: 12V 20Ah
So far the battery has been excellent, powerful and very useful around the house for everyday uses and also during car trips. The only remaining question is how long the battery could perform like this. After about 6 month of uses, I will update this review to a five star or a three-star rating.
Reviewed in the United States on November 20, 2024 by Byung m. Na

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