12V 100Ah LiFePO4 Battery, Rechargeabel Deep Cycle Lithium Batteries, 100A BMS with Low-Temp Protection, Perfect for RV, Solar, Boat, Trolling Motor
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This item is eligible for return within 30 days of receipt
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Availability:
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Arrives
Jul 30 – Aug 1
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Style: 12.8V 100Ah Group 31
Features
- BCI Group 31 Size, Universal FitTCBWORTH 12V LiFePO4 Battery 100Ah was built based on the most ubiquitous size of the BCI battery size standard "Group 31", allowing it to function effectively in a variety of vehicles and applications. It is globally compatible with the Group 31 battery box . It is a perfect replacement for Group 31 lead-acid and AGM, SLA batteries, no maintenance or complicated operation or wiring is required
- Perfect Replacement for Lead-acid Batteries TCBWORTH 12V 100Ah Lithium LiFePO4 Battery is the perfect choice for lead-acid battery conversion and upgrading, the weight of 100ah lifepo4 battery is only 20.7lbs, they are 35% smaller and 63% lighter than ordinary lead-acid batteries, and the energy density has been increased by 3-5 times, the deep cycle has 10 times longer, the lifespan is 3 times longer.
- 100A BMS Protection & Low Temp Cut-off The 12V lithium battery 100ah with a upgraded 100A BMS, 100% full protection against overcharging, over-discharging, over-current, overheating, and short circuits. And it is upgraded with a low-temperature cut-off function to ensure safe use in low-temperature environments. Auto Overload Protection & Recovery, Say goodbye to manual intervention due to battery shutdown or protection mode. please note this one does not have bluetooth function.
- Charging & Discharging features of the 12 Volt lithium battery 100Ahthe max continuous discharging current is 100A. the inrush current is 200A within 3-5 seconds. charging voltage we recommend for LiFePO4 Battery 12V is 14.6V, charging current recommended is less than 50A. widely can be used for Rv, boat, marine, trolling motor, solar, camping, off-grid applications, UPS, radio, sump pump etc.
- Suport series and parallel connection, widely use12v 100ah lifepo4 lithium battery suport series and parallel connection, up to 4S4P. if 12V 100Ah battery in series use, we recommend to order TCBWORTH 24V, 36V, 48V LiFePO4 Battery. More stable system, longer service life and no complex connections.
- Warm note1. please use a waterproof battery box with the battery if used on a boat or wet environment 2. charge the battery within 12 hours if the batery totally discharged 3. battery can not be used on a golf cart, or as a car starter battery
Brand: TCBWORTH
Vehicle Service Type: Boat, RV, Scooter, Solar, Truck
Size: 12.8V 100Ah Group 31
Voltage: 12.8 Volts
Product Dimensions: 6.93"D x 13.07"W x 8.66"H
Terminal: Screw Terminal
Automotive Fit Type: Universal Fit
Manufacturer: TCBWORTH
Number of Items: 1
Compatible with Vehicle Type: Boat, RV, Scooter, Solar, Truck
Voltage: 12.8 Volts
Terminal: Screw Terminal
Automotive Fit Type: Universal Fit
Size: 12.8V 100Ah Group 31
Item Dimensions D x W x H: 6.93"D x 13.07"W x 8.66"H
Brand Name: TCBWORTH
Manufacturer Part Number: AMZTCB12V100AH332
Model Number: AMZTCB12V100AH332
Manufacturer: TCBWORTH
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Jul 30 – Aug 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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Style: 12.8V 100Ah Group 31
Really good battery super light holds a charge like crazy I will buy another eventually
Reviewed in the United States on March 13, 2026 by jk
Style: 12.8V 135Ah BT Group 31
I've had this battery going on 5 months and maintaining charge with a 230W solar panel. The panel is installed atop my cargo trailer I bring to my construction jobs. Using basic power tools and charging other cordless tool batteries I've only just recently had the battery drop to 0%. This happened due to a week of rain and little sun power. So I bought a second one to double up the total accessible power. Back to the title. Don't use the bugged foreign language app they suggest to download. After searching online I now use the app called OVERKILL SOLAR. It's 10x better. The left pic is overkill solar app and the right is the suggested app by the battery company.
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Reviewed in the United States on November 11, 2025 Reviewed in the United States on November 11, 2025 by Jim
Style: 12.8V 100Ah Group 31
I would give zero if that was an option. Bought this battery. It worked great in the beginning approximately 11 cycles then the voltage would jump up and down erratically.. I was going to return it, but then the battery started working fine again for two more cycles and then just stopped working at all naturally it was beyond my return window. I contacted. The seller explained what was going on and they had me do a series of test by removing the top of the battery case off and using a multimeter to test multiple things.. I sent them pictures explained what was going on with the battery and their reply was it had gotten wet inside the battery was no longer fixable sorry. Since all of this and his battery is nothing more than a paper weight I decided to test all the cells individually and come up with the conclusion that it is the BMS that is at fault. The seller will not attempt to make it right with me by providing me with new parts or a replacement battery.. I didn’t notice when I took the top cover of the battery off. That is seal which was very thin wasn’t in my opinion a good enough seal for a marine battery.. I also explained to the seller that this battery was used for a 12 foot aluminum flat bottom John boat and was never left outdoors in the rain or was never exposed to water.. I had even asked if condensation could be a factor in their decision about saying that there’s moisture that got inside of the battery and ruined it. I got no reply.. They had just stopped speaking to me altogether.. I am a firm believer of public opinion and I feel I was done wrong by the seller so don’t let my misfortune happen to you because the seller will not back up any option to make things right. All I wanted was a quality battery to use in a small boat to run a trolling motor and wound up with a headache and an empty pocket out of this deal.. I will do my due diligence to report the seller. Every chance I get because I am very dissatisfied with their follow up customer service.. I believe if you spend your hard earned money on a product and you get a faulty one I think the seller should try to do the right thing and help the customer fix or replace the item. Buyer beware of the seller. I cannot repeat that enough..Once this seller has gotten your money they don’t care if you bought a good one or bad one. In my opinion, this is a very bad seller with very poor customer service.!
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Reviewed in the United States on March 28, 2026 Reviewed in the United States on March 28, 2026 by Archie woods
Style: 24V 100Ah BT
Fantastic battery for the money spent, I use it primarily for my Minn Kota trolling motor app is easy to use and monitor the battery usage, I would buy again
Reviewed in the United States on May 24, 2026 by Erick
Style: 12.8V 135Ah BT Group 31
So far it's been an amazing battery. It runs my Newport 55lb trolling motor, 12 deck lights, front and rear safety lights, 2 charging ports, 4 switches, and my Humminbird Helix 9 Mega SI fish finder for a full day with plenty of juice to spare. And that's with heavy trolling motor usage. Using all the equipment normally (lights on and using the trolling motor only when needed, not maxed out), I could probably get 8-10 hours on a full charge if I had to guess, maybe more. It connects to an app and it shows you how much battery life is left and the current voltage and everything. It's a great battery. I highly recommend it, especially for fishing kayakers with fully equipped yaks. Measures 13" long, 6¾" wide, and 8½" tall body (9½" tall including the posts)
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Reviewed in the United States on April 20, 2025 by Danimal
Style: 12.8V 100Ah Mini BT
Great
Reviewed in the United States on April 26, 2026 by Benzo254
Style: 12.8V 135Ah BT Group 31
I bought one of these batteries to run my Garmin Livescope system. Somehow water got inside the case and caused the battery to stop working properly. I contacted TCBWorth and was given some ideas on how to try and fix the issue. They were very helpful and I was able to get my issue resolved. Great customer service from Linna. Just be caution and don't let the battery get wet and protect it from elements such as rain and you should be good to go with one of these batteries. I honestly think the water got in there from a missing cap that covered one of the screws to the cover of the battery. And btw, they carry a little move voltage than what is advertised. 13.3 to 13.5 is what I'm getting which works even better for my Garmin Livescope setup. Thanks TCBWorth. I will do business with you all again.
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Reviewed in the United States on September 23, 2025 by Tommy P.
Style: 12.8V 135Ah BT Group 31
There’s definitely other litiums out there that cost 2X-4X more than this and it doesn’t come with Bluetooth/monitor. I have a Garmin Force and running 2 of these for a 24V system and I don’t think I have ever used enough juice to drop down under 60%. Replacing the lead acid battery was one of the best upgrades, this battery came pre-charged from the box already and I’ve gone out 7-8 full outings without a charge at times. Definitely worth the money.
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Reviewed in the United States on January 30, 2026 Reviewed in the United States on January 30, 2026 by Mang Her Vang