12V 20AH LiFePO4 Lithium Battery, Built-in 20A BMS, 5000+ Cycles Rechargeable Deep Cycle Battery, Perfect for Solar Power, Small UPS, Gate Opener, Fish Finder, Outdoor Camping
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Extended holiday returns
Returnable until Jan 31, 2026 Learn more
Returnable until Jan 31, 2026 Learn more
This item's return window has been extended for the holiday season: Returnable until Jan 31, 2026
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.
Arrives
Dec 24 – Dec 25
Style: 12V 20AH
Features
- BUILT-IN 20A BMS Deep cycle battery has built-in 20A BMS to protect it from overcharge, over-discharge, over-current, and short circuit with excellent low self-discharge rate. With high temp cutting off prevents charging over 167 F (75C). If the package you received does not contain M5 screws, please communicate with us first, thank you very much (Not a starting battery, not suitable for use as a power battery)
- Advanced Lithium Iron Technology 20Ah lithium battery manufactured by Automotive Grade LiFePO4 Cells with higher energy density, more stable performance and greater power. Excellent cycle performance, fast charging and discharging, charging efficiency up to 100%, and high output power. Without memory effect, no matter what state the battery is, it can be used as soon as it is charged. Supporting expansion for up to 4 series & 4 parallel and suitable for electric energy storage
- Exceptional Longevity & Lightweight Our LiFePO4 lithium iron batteries provides 5000+ cycles compared to 300~500 cycles in lead acid battery. The service life of LiFePO4 batteries is 8 to 10 times than the standard lead-acid batteries. Helping to minimize replacement cost and reduce total cost of ownership. And the weight of the lithium iron phosphate battery is 30% lighter than the lead-acid battery of the same capacity, so you can carry it more easily
- Safety & Green Battery The stable Lithium Iron Phosphate chemical structure makes LiFePO4 battery not burn or explode even at high temperature, short circuit, impact and drop. Highest-level safety based on UL Testing Certificate for the cell inside the battery. And it does not contain any heavy metals and rare metals, which called green battery
- Multi-Application & Technical Support With no acid in the lithium ion battery, you can safely mount it in any position. This makes li-ion batteries perfect for marine, RV, campers, travel trailers, and off-grid applications! Vatrer Power provides 24hrs friendly and professional customer support, any questions please contact us.
- NOTE The 20Ah battery adopts our latest appearance design. All the configurations are the same as the previous version. It can still be connected in series or parallel with the earlier version.
Brand: VATRER POWER
Size: 12V 20AH
Battery Cell Composition: Lithium-Phosphate
Product Dimensions: 3.03"D x 7.08"W x 6.77"H
Number Of Cells: 24
Resistance: 30 Ohms
Terminal: Marine Terminal
Automotive Fit Type: Universal Fit
Manufacturer: VATRER POWER
Brand: VATRER POWER
Size: 12V 20AH
Battery Cell Composition: Lithium-Phosphate
Product Dimensions: 3.03"D x 7.08"W x 6.77"H
Number Of Cells: 24
Resistance: 30 Ohms
Terminal: Marine Terminal
Automotive Fit Type: Universal Fit
Manufacturer: VATRER POWER
Model: 12V20Ah
Item Weight: 5.88 pounds
Item model number: 12V20Ah
Batteries: 1 Lithium Ion batteries required.
Manufacturer Part Number: 12V20AH
Date First Available: July 6, 2022
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Dec 24 – Dec 25
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Style: 12V 100Ah
I am very impressed with this 12V 100AH LiFePO4 deep cycle battery. It has all of the features I was looking for in a deep cycle battery, including a long lifespan, high capacity, and built-in BMS. I have been using it in my RV for a few months now, and I am very happy with its performance. It has plenty of power to run all of my appliances, and it holds its charge for a long time. I would highly recommend this battery to anyone looking for a high-quality deep cycle battery. Here are some specific things I like about this battery: - Long lifespan: This battery is rated for 5000+ recharge cycles, which is much longer than traditional lead-acid batteries. - High capacity: The 100AH capacity provides plenty of power for even the most demanding applications. - Built-in BMS: The built-in BMS protects the battery from overcharge, over discharge, and short circuit. - Lightweight: This battery is much lighter than traditional lead-acid batteries, which is a major advantage for RV and marine applications. Overall, I am very pleased with this 12V 100AH LiFePO4 deep cycle battery. It is a great option for anyone looking for a high-quality, long-lasting deep cycle battery.
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Reviewed in the United States on August 9, 2024 by ray9279
Style: 12V 100AH Heating
I have 5 of these 100 AH Vatrer batteries and I love them. They are well-built and perform quite well. I have 3 of them in a home solar power system and 2 of them in my camper. Vatrer does a great job of responding to what their customers want and upgrading their products; for example, adding low-temp charge cut-off, self-heating capability, and a Bluetooth interface. I particularly appreciate the Bluetooth connectivity, because it pretty much eliminates the need for me to buy an external battery monitoring device. I can just pull up the app and see what my battery State Of Charge (SOC) is. Additionally, their customer support is quite good. In a recent order, I accidentally ordered a newer version of the battery that is too big to fit in my camper’s battery compartment. I emailed customer support and they responded the next morning with a very generous solution to my problem. I wish all companies had this kind of customer support! In my opinion, these guys have a great product and great customer support. Can’t ask for much more than that! (One word of caution: they are constantly upgrading and improving their products, but they don’t always change the product part number when they do that. When your order, make sure to check the specs to ensure you’re getting what you expect. This is true even when you have already ordered the same product. It may change without warning.)
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Reviewed in the United States on October 26, 2023 by Bob
Style: 12V 100Ah
Why did you pick this product vs others?: Price was right seemed well build plenty of power will be part of a simple solar system that keeps the light on and battery charged in a tool shed far as quality only time and use will tell
Reviewed in the United States on July 11, 2025 by unknown
Style: 12V 100AH Heating
I have had this battery for 1.5 years and it has been wonderful. Off grid camping used to be a stressful situation with our two small kids worrying that we were always going to run out of battery. With this unit we always have enough for everything we want to do. We recharge during the day with a 100w solar panel and even in cloudy weekends never dip below 50%. Impressively, I had to email customer service this past weekend because the battery stopped taking a charge. It turned out to be pure user error on my part but even though I am well outside the return period they promptly replied with the solution (completely disconnect the battery from the load- not just turn off the battery cut off and let it sit for an hour or so). I am very impressed with both the battery and the company. If you need a great battery for camping in a travel trailer, this is the battery you need.
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Reviewed in the United States on October 28, 2025 by Slowshoes
Style: 12V 100Ah
The media could not be loaded. Amazon stepped in, and rectified the situation. But I would prefer buying from amz prime seller next time. I initially purchased this battery due to its attractive price point, hoping it would be a worthwhile investment. However, I received what appears to be a used battery. While the exterior of the battery looks brand new, the internal cells seem to show signs of use. First, the battery wouldn’t charge beyond 96%. I ran tests because both batteries I received discharged unusually fast. Typically, new LiFePO4 cells have internal resistance values between 1 mΩ and 10 mΩ when freshly manufactured and before significant use. Both batteries I tested showed internal resistance values exceeding 30 mΩ. To verify this, I used a resistance tester specifically designed for 100Ah lithium phosphate batteries, and I repeated the test multiple times. Additionally, I manually calculated the internal resistance using the following formula: **R_internal = V drop / Ioad = 0.04V / 1.0A = 40 mΩ** **Test Results:** - Open-circuit voltage (OCV): 13.38V - Voltage under load: 13.34V - Current under load: 1A - Internal resistance: 40 mΩ This is not acceptable for a brand-new LiFePO4 battery. An internal resistance of 30-40 mΩ suggests the battery is not performing at peak efficiency, which is concerning for a supposedly new battery. If this battery has been in use for some time, the increased internal resistance indicates potential wear or degradation. **Seller’s response:** "The battery tester you used is not compatible. There’s nothing wrong with the battery. You can use a voltmeter to test it. Lithium batteries don’t have CCA." **My response:** The testing device I used measures the simple resistance of any battery, including lithium phosphate batteries, as demonstrated by the attached results. I also purchased a second tester to confirm the readings. Additionally, using basic math based on voltage and current under load, the battery’s resistance clearly exceeds 30mΩ. While it’s true the battery technically "works," it is not what I paid for—this is a used battery. I understand the price was lower than the competitors, but I still expect to receive a new product.
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Reviewed in the United States on September 22, 2024 by Yael Yael