12V 8Ah LiFePO4 Lithium Battery, LiFePO4 Battery Built-in BMS, 4000+ Deep Cycles 8Ah Lithium Iron Phosphate Batterys Waterproof for Solar, Small UPS, Power Wheels, Fish Finder, Camping
Condition: New
Buy Now, Pay Later
As low as
$4
/ mo
Learn more
- – 4-month term
- – No impact on credit to apply
- – 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, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. 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 returns
Learn more
FREE refund/replacement 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
Wednesday, Jul 22
Recently Viewed
Style: 12V 8Ah
Features
- Long service life12V battery offers exceptional value. It boasts a remarkable 10-year lifespan, over 4000 deep cycles, and weighs just 2.2 pounds. While the LiFePO4 battery may have a slightly higher initial cost than lead-acid alternatives, its superior longevity and cycle performance result in a lower total cost of ownership. By choosing the 12V 8Ah LiFePO4 battery, you not only gain long-lasting efficiency but also realize significant savings in both time and money over the long term.
- Built-in Smart BMSLiFePO4 lithium batteries have a built-in BMS that protects against overcharging, over-discharging, over-current, and has an excellent self-discharge rate. The built-in high-temperature cutoff prevents charging temperatures from exceeding 50 C. In addition, the battery can be recharged in three ways, including a lithium iron phosphate battery charger, a solar panel with controller, and an alternator (generator).
- Connections for Higher Capacity 12V 8Ah LiFePO4 batteries can be connected in parallel or series for greater capacity. Expansion to 4S or 4P is allowed to obtain a maximum capacity of 32Ah or a maximum voltage of 48V(51.2V).12V 8Ah LiFePO4 lithium batteries have a wide range of uses for REmergency Lighting (LED strip etc), 12V router, RV/outdoor camping, kids ride on toy car, Power wheels, Fish finder, Kayak, Ham Radio, Home Alarm, Cellular remote camera, Solar/Wind power and more.
- Lightweight and compactThis 12V 8Ah backup power source measures 5.9L x 2.6W x 3.7H inches and weighs only 2.2 pounds, making it much lighter and easier to carry and install than batteries of equal size and capacity. This makes it very popular in portable devices and outdoor power supply.
- IP67 Waterproof12V 8Ah LiFePO4 battery features IP67 waterproof protection, making it a reliable alternative to traditional 12V 8Ah lead-acid batteries, making it a reliable alternative to traditional 12V 8Ah lead-acid batteries.
- Power wheels
Brand: VEMDIA
Vehicle Service Type: Fish finder, Ham Radio, Home Alarm, Home Energy Storage, Power wheels, RV, Solar Energy Storage System, outdoor camping See more
Voltage: 12.8 Volts
Battery Cell Composition: Lithium Metal
Item Weight: 2.3 Pounds
Product Dimensions: 2.6"D x 5.8"W x 3.6"H
Resistance: 120 Milliohms
Terminal: F2 Terminal
Battery Capacity: 8 Amp Hours
Automotive Fit Type: Universal Fit
Brand: VEMDIA
Product Dimensions: 2.6"D x 5.8"W x 3.6"H
Resistance: 120 Milliohms
Terminal: F2 Terminal
Battery Capacity: 8 Amp Hours
Automotive Fit Type: Universal Fit
Manufacturer: VEMDIA
UPC: 747783254809
Item Weight: 2.3 pounds
Item model number: 8Ah Lithium Battery
Batteries: 1 12V batteries required.
Date First Available: August 5, 2025
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, Jul 22
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.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- Zip Pay in 4
- Financing through Apple Pay
- Financing through Google Pay
Learn more about financing & leasing here.
Similar Products
Top Amazon Reviews
Style: 12V 8Ah
The lead acid battery inside my TrippLite UPS finally died and I needed a replacement as the UPS was no longer protecting my modem/router in the case of an outage. This battery was a direct replacement for the UPS. The LiFePO4 battery charged quickly and was up and running in less then 3 hours! The UPS did say that the battery was 50% upon arrival so keep that in mind. The replacement battery is also lighter then its lead acid counterpart. Lets hope I will never have to replace this battery as LiFePO4 is supposed to last a long time! Oh yeah! This battery also has the full size F2 terminals so it fits the connectors on the UPS snug unlike a F1 connector. Overall, excellent battery replacement for an UPS battery.
...
show more
Reviewed in the United States on October 22, 2025 by EDISONTECH
Style: 12V 8Ah
Very impressed for the price I hooked it up to my gate opener and have not had any problems now for over a month and 1⁄2. Seems to be a strong or maybe stronger than my regular sealed lead acid battery. Was not expecting it to do much as this battery is light in weight Probably 1⁄4 of the weight of a lead acid 12 volt battery Of the same size.
...
show more
Reviewed in the United States on November 23, 2025 by catfishjr241
Style: 12V 8Ah
Good little battery. Works well
Reviewed in the United States on December 12, 2025 by Steven
Style: 12V 100Ah LiFePO4
Great value! I fully charged it up to 13.65v, then let the battery sitting there without any connection. 14 days later, it dropped to 13.31v. I ask AI if it is a good battery, and the answer is "Good".
Reviewed in the United States on December 27, 2025 by Kim L
Style: 12V 100Ah LiFePO4
The media could not be loaded. Update after contacting the seller: I informed the seller that none of four batteries I'd ordered would to a battery voltage charge beyond ~13.75V so I wasn't getting the advertised capacity, The batteries also drop to ~13V within an hour after charging is shut down. Their response was "the batteries will work at 13V, are they causing an issue". Thing is, a LiFePO4 battery advertised for energy storage that isn't reaching full charge of 14.6V also isn't reaching full capacity so I'm never going to get the advertised 100Ah, that in itself is an issue. The seller should have known that the batteries not reaching full charge meant there is a serious issue with the batteries, yet they tried to convince me to keep less than what was advertised, less than I paid for garbage batteries instead of having some level of integrity. Avoid these batteries and avoid this seller. The batteries obviously have bad cells that are going out of balance causing the BMS to shut down charging input. Those bad cells will destroy these batteries, sooner rather than later. The bad cells also explain the voltage drop after charging ends, the BMS is trying to balance the cells. The seller knows this and doesn't care that they're ripping you off, they just want your money. If I could give no stars I would. Original review: One of the pictures in the ad would lead anyone to believe there are four 100Ah rectangular cells in these batteries yet that is not the case. These batteries contain 24 smallish cylindrical cells in a 4S6P configuration. While there is nothing inherently wrong with cylindrical cells they are not the best choice for this type of application where a single cell going out of balance or having an issue bricks the entire battery and the cells can't be accessed due to being epoxied into a case the way these are. There is about an inch of epoxy in the bottom of these batteries, holding the cylindrical cells in, keeping them insulated and holding in heat while preventing cell cooling. For all four of the batteries I ordered the BMS shuts down charging when the battery reaches about 13.75V, far below maximum charge. So even if the batteries were capable of reaching the 100Ah capacity as advertised, the BMS will prevent you from ever seeing it because it won't allow you to reach the full charge of 14.6V which is where you'd hit that max capacity. These batteries are hot garbage and should be avoided, for the false misrepresentation of the internal build in the ad photos, for the fact that the BMS of each battery will prevent you from ever reaching full charge to gain full capacity, for the epoxy encasing the cells trapping heat and preventing cooling, for a multitude of reasons beyond these. For charging, I tried 14.6V at 20A, 14.6V at 4A, 14.6V at 3A, with CC/CV chargers, LiFePO4 chargers and solar charge controllers. It didn't matter what charger or charging method I used the batteries' BMSs did the same thing and shut down charging at that 13.75V range. Even were these capable of 100Ah (which I seriously doubt) they will never achieve it due to the BMS cutting off charging so far below full charge. Why are they set up to shut off charging so far below full charge? The BMS itself is preventing full capacity from being reached, preventing full functionality from being reached and making these batteries worthless for their intended and desired purposes. Had I known these were cylindrical cell batteries, I'd never have ordered them. That one photo illustration in the ad misled me into believing there would be 4 rectangular cells of 100Ah capacity rather than the 4S6P cylindrical cell pack these batteries actually contain. The way these batteries are built all it would take is one out of those 24 cells developing an issue to brick the entire battery. Having those 24 cells rather than the 4 larger rectangular cells is not a desirable battery in my view. I guess honesty in advertising is too much to ask for these days. I will be returning these as the BMS shutting down charging below full charge prevents full capacity from being reached and I'm not getting what I paid for. These batteries will never reach the advertised capacity.
...
show more
Reviewed in the United States on December 6, 2025 by Mark Massingill Mark Massingill
Style: 12V 8Ah
Direct replacement for the Verizon FIOS home unit, this was a good and economical alternative to the lead acid battery that went bad.
Reviewed in the United States on December 8, 2025 by Queens Determination
Style: 12V 8Ah
I purchased this battery pack rated at 8Ah / 100Wh, but after running my own capacity test, at 1C rating discharge (8Amp), I was genuinely surprised! It delivered 9.2Ah / 111Wh. Getting significantly more capacity than advertised is rare and fantastic. It's built well, holds a charge perfectly, and is an outstanding value. If you need reliable, long-lasting power, this is the one to get. Highly recommend!
...
show more
Reviewed in the United States on October 28, 2025 by David p. David p.
Style: 12V 8Ah
Arrived as advertised.
Reviewed in the United States on December 15, 2025 by Amazon Customer