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Fukuai

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
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$49.49
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Availability: In Stock.
Fulfilled by Amazon
Arrives Oct 31 – Nov 1
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At a glance

Condition
New
Size
12V 20Ah
Model
LFP20AH
Weight
4.85 lb
Terminal
M5 Terminal

Features 6

  • 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

Specs 9

Brand Fukuai
Size 12V 20Ah
Number Of Cells 4
Terminal M5 Terminal
Manufacturer Fukuai
Item Weight 4.85 pounds
Package Dimensions 9.25 x 8.35 x 4.37 inches
Batteries 1 Lithium Ion batteries required. (included)

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Oct 31 – Nov 1

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.

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Leasing options through Acima may also be available during checkout.

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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
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