Search  for anything...

12V 20Ah LiFePO4 Lithium Battery, 2000+ Deep Cycles Rechargeable Battery for Solar, E-Scooters,Camping,Off-Grid Applications,Built-in 20A BMS

  • Based on 144 reviews
Condition: New
Checking for the best price...
$49.49 Why this price?
Save $5.50 was $54.99

Buy Now, Pay Later


As low as $8.25 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

30-day refund/replacement

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.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Aug 29 – Aug 30
Order within 1 hour and 15 minutes
Available payment plans shown during checkout

Size: 12V 20Ah


Features

  • Superior PerformanceOur 12V 20Ah battery has exceptional quality and more stable performance.The 12v lithium battery delivers high energy density,long cycle life,and outstanding safety features.The built-in BMS protection system safeguards against overcharge,over-discharge,over current,and short circuit with excellent self-discharge rate,which reduces the damage to the battery,which further enhances its reliability and durability in practical applications
  • Longer Service LifeThe service life of LiFePO4 batteries lasts a long time(10 years life) and more cycles,and Fukuai 12V 20Ah LiFePO4 battery provides 2000+ deep cycles compared to 300~500 cycles in lead acid battery
  • Safety and LightweightThis is a small, light-weight battery for solar projects or backup power for various electronics. It is much lighter than AGM batteries of equal size and capacity,is only weights 4.85 pounds,which is convenient for you to move and install it. The battery uses standard M5 (1/4 wide) Terminal for connections
  • Expansion Applications and RechargeFukuai 12V 20Ah LiFePO4 battery has various connections in parallel and series, which is allowing users to easily increase voltage or capacity as required.It is kindly recommended that no more than 3 identical batteries are connected in parallel or in series
  • Versatile Application ScenariosPerfect for a wide range of uses,the Fukuai 12V 20Ah LiFePO4 battery excels in Small UPS,Solar System, Scooters, Emergency Lighting, Power Wheels, etc.
  • What You GetOur this 12v deep cycle LiFePO4 battery provides professional technical team. If you have any questions about our product, please don't hesitate message us, we will do our best to meet your needs. (Warm Noticed: Battery charger is not included, please kindly use ONLY LiFePO4 dedicated charger rated around 14V)

Brand: Fukuai


Size: 12V 20Ah


Number Of Cells: 4


Terminal: M5 Terminal


Manufacturer: Fukuai


Manufacturer: ‎Fukuai


Brand: ‎Fukuai


Item Weight: ‎4.85 pounds


Package Dimensions: ‎9.25 x 8.35 x 4.37 inches


Batteries: ‎1 Lithium Ion batteries required. (included)


Manufacturer Part Number: ‎LFP20AH


Date First Available: January 21, 2025


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Aug 29 – Aug 30

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.

Top Amazon Reviews


  • Good battery for the money
Size: 12V 15Ah
I love how light lifepo batteries are. This one works as expected and holds a charge well. Wouldn’t hesitate to buy again .
Reviewed in the United States on June 28, 2025 by Jesse

  • Good deal, I would by this product again.
Size: 12V 20Ah
For such a small light weight battery I have to say I am very impressed. It works fantastic for what I needed it for.
Reviewed in the United States on June 16, 2025 by Steve Is Awake

  • Nice battery. Smaller than I expected and very light
Size: 12V 20Ah
I got this 20Ah 12V LifePo4 battery to power the accessories on my boat. GPS/Fish finder, running lights, bilge pump, and a couple of other things. So far I have run the lights at night for about 2 hrs straight as well as had the GPS on for nearly 7hrs straight and run the bilge pump some due to me beaching the boat and trying to back out filling the back of the boat with water. The battery wasn’t even down one bar when I hooked it to the charger. There was one time this past weekend that I had hooked it to the charger over night. Unplugged it in the morning and saw it was fully charged. Loaded the boat and took it to the lake a couple hours later. When I got to the lake it showed only 2.3V and nothing would work. Get back home that evening and hooked it to the charger and as soon as the charger started charging it turned back on. I’m pretty sure it was the BMS “Battery Management System” that had shut the battery down. As I had the boat in the direct sun in the yard all day and I think it had gotten over heated so it disconnected the battery. Putting it on the charger reset that I’m assuming. Used it the next day all day without issue. ... show more
Reviewed in the United States on June 24, 2025 by Jonathan Schubert

  • Dud
Size: 12V 20Ah
The media could not be loaded. Charged battery to 100% when received, with 2 amp lithium charger. Sat for 3 weeks, checked charged, showed charged. Verified with battery charger. Battery preformed great for the first 2-3 hours of run time at 3 amp. Disconnected the battery, go to use it the following day and nothing. Check voltage, 0 volts. Will not accept charge. ... show more
Reviewed in the United States on May 10, 2025 by Dustin

  • Super light battery
Size: 12V 20Ah
4 stars just because nothing made by man is perfect. Although this comes really close. Great battery. Charged up great. I’m in test mode now. I’ll update in a few days but I feel confident it’ll be a plus.
Reviewed in the United States on June 29, 2025 by carr869

  • Works for my needs
Size: 12V 15Ah
Why did you pick this product vs others?: This is the size that I was looking for
Reviewed in the United States on June 23, 2025 by Tim

  • Excellent battery for the price.
Size: 12V 15Ah
It works very well! I use it for a backup battery for my security system. Ran it standalone 24x5 as a test and it held up very well. I didn't wring it out for a very thorough test, but I know it will do what I need it for.
Reviewed in the United States on May 7, 2025 by Jerry Tusch

  • Seems like a good battery.
Size: 12V 15Ah
Odd name for this battery but it seems to hold charge. I have 2 providing DC power to a shed. There’s a solar panel keeping it topped off. The shed is powering inside motion activated lights and a WiFi mesh router. I’ve not done a real capacity test but it does what I need.
Reviewed in the United States on June 4, 2025 by PhilL

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...