12V 100Ah Lifepo4 Battery, Bci Group 24 Size, Built-In 100A Smart BMS, 4500-15000 Deep Cycle Grade A Lithium Cells For RV Travel, Trolling Motor, Marine, Boat, Solar Panel, Camping (2 pack)
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Availability:
20 left in stock
Arrives
Thursday, May 21
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Color: 100Ah Basic
Size: 2 pack
Features
- 10-year lifespanUnder the correct usage, after our rigorous testing, MARSENERGY 12v 100ah lifepo4 battery can keep 100% Depth of discharge(DOD) after 4500 deep cycles, 80% DOD after 8000 deep cycles, and 60% DOD after 15000 deep cycles. Traditional lead-acid batteries only have 300-500 cycles, and their service life is only 1/10 of that of our deep cycle battery
- Smaller and lighterMarsenergy 12v 100ah lithium battery weighs only 21lb, much lighter than traditional lead-acid battery. It size is 10.16*8.46*6.54 inches, which perfectly meets the BCI Group 24 standard. If you previously had a Group 24 lead-acid battery box, you can directly upgrade to a lithium battery. If you have a larger battery box such as Group 27 or 31, it is still compatible
- Reliable qualityEvery penny of cost is used to provide reliable quality of Marsenergy 12v lithium battery. Completely waterproof, robust and reliable. The cells contain additional low-temp additives, making them more resistant to low temp compared to traditional lithium batteries. (Cell's technical standard allows operation at -40F, but for battery life and safety, the BMS will cut off discharge at -4F or charging at 32F)
- Safety GuaranteeMarsenergy lithium batteries 12v uses A-grade cells, and the BMS board has multiple safety protection functions. Once the BMS detects that the battery is in an abnormal state (short circuit, over-voltage, abnormal temp etc.), it will immediately cut off the power and put the battery into sleep mode to protect the safety of you and your family. (The battery in sleep mode needs to be activated before it can be used again. Please refer to the user manual or contact us)
- Worry-free After-salesMarsenergy provide 5-year of after-sales service. Whether the product is within the after-sales service period or not, you can contact us at any time when you need our service. Click "Ask a question" on our store, or click "Contact Seller" in the "Your Order" option. We will deal with it immediately and provide you with a satisfactory solution
Number of Batteries: 2 Lithium Ion batteries required. (included)
Brand: MARSENERGY
Battery Cell Composition: Lithium-Phosphate
Battery Capacity: 100 Amp Hours
Recommended Uses For Product: BCI Battery BOX Group24/27/31, Marine/Boat/Kayak, Other 12V/24V/36V/48V Devices, RV Travel, Solar Energy System, Trolling Motor See more
Number of Batteries: 2 Lithium Ion batteries required. (included)
Brand: MARSENERGY
Model Number: LFP12100(12.8V100Ah)
Model Name: LFP12100(12.8V100Ah)
Manufacturer: Marsenergy
Built-In Media: 1 x After-Sales Service Card, 1 x User Manual, 2 x Marsenergy 12V 100Ah Lifepo4 Deep Cycle Batteries, 4 x M8 - Diameter 0.315" (8MM) Terminal Bolts
Warranty Description: 5 Year Manufacturer
Battery Cell Type: Lithium-Phosphate
Battery Capacity: 100 Amp Hours
Voltage: 12.8 Volts (DC)
Reusability: Rechargeable
Amperage: 100 Amps
Compatible Phone Models: Other 12V/24V/36V/48V Devices, RV Travel, Trolling Motor
Unit Count: 2.0 Count
Battery Weight: 21 Pounds
Item Dimensions: 10.16 x 6.54 x 8.64 inches
Item Weight: 21 Pounds
Antenna Location: BCI Battery BOX Group24/27/31, Marine/Boat/Kayak, Other 12V/24V/36V/48V Devices, RV Travel, Solar Energy System, Trolling Motor
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Thursday, May 21
This item is non-returnable:
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
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Top Amazon Reviews
Ive been using the battery almost daily 3-5 days a week for the past month. I charge it every2 trips or so. It is sooo efficient, when i use it it stays on for 3-4 hrs and so far it has outdone itself, super light and holds a strong charge. If i need another in the future this is the one im choosing
Reviewed in the United States on November 26, 2025 by Yanirys Garcia
Color: 100Ah Basic
Size: 1 pack
When trying to figure out how to use a trolling motor and power it, I wanted to make sure I did not have to stretch a extension cord down from my house and out onto the dock like the neighbor to charge the battery. So a lightweight battery meant I could easily carry it up to the house to charge. Yay! We are new to this but it’s working great. And the company reached out to thank us for registering it and said if we had any questions. So seems customer service if needed may also be good. I took them up on their offer and have asked them several questions. This company seems to have the best customer service I have ever experienced.
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Reviewed in the United States on April 21, 2026 by kathi wheeler
Update 4/30/26 from 4 to 5 🌟 Stars -Without going into detail, MARSENERGY has helped deduce a concern that I've had using a WFCO brand converter installed in my RV. I've since switched to a proper charger (instead of WFCO's attempt of a smart swiss-army-knife do-all converter) and the battery is now performing perfectly. I've rarely had such a good conversation towards a customer support effort as with MARSENERGY. I'm new to Lifepo4 technology and their patience with me is appreciated. I feel they stand behind their products and intend to be around for a long time. No hesitation at being a repeat customer. [original review] Battery acquired 2+ weeks ago. Installed in Mini RV with lithium battery charging capable WFCO converter. Purchased specifically to use occasionally in cold weather/below 32°F conditions. Battery itself & documentation all impressive appearance. First test of "self heating" battery summation: ~Air temp was approx 20°F ~Per the app, battery temp was 20.8°F ~After connecting to charger and viewing the temp via the app, it took approx 51 minutes to for the battery to go from 20.8°F to approx 41°F before the status switched from "standby" to "charging". Battery charged fine. ~(The documentation really doesn't address what to expect from this "self heating" functionality, so thought I'd note my experience so others are aware) App is fine/basic/proprietary software. It is for battery status info only, there are no values the user can adjust to effect the battery behavior. Per Amazon's Rufus, these batteries use "passive" load balancing (vs "active"). Still good, keeps cost low. A note to RV users-if your camper has an old style battery indicator with the simple 4 LED lights to show how full the battery is, they probably won't accurately to show the state of charge with newer technology lithium batteries, no matter the brand, size, etc. Due to their flat level discharge curve, the lithium batteries appear full until nearly depleted on these LED indicator styles designed for lead-acid batteries. Since this Marsenergy model has Bluetooth tech, I'll rely on the "Battery BT" app to see the SOC (state of charge) instead. Nice having a lighter weight battery with more useful power than the old lead acid battery I've replaced.
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Reviewed in the United States on February 20, 2026 by DLBear
Chargers just fine not a big fan of the Chinese app making you sign up to use it. Fits in a standard battery box. Chargers on the slower side about 21 amps but not the end of the world to me. I can't say anything on longevity as I only had it for a month. The app has the ability to disconnect the battery so that's nice. Battery seems to be good quality but only time will tell on its longevity.
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Reviewed in the United States on January 10, 2026 by Andrew Mospak
Color: 100Ah Basic
Size: 1 pack
Took 55 hours to charge up
Reviewed in the United States on December 27, 2025 by Thomas j Horstman
Bought to replace 2 LA batteries in RV to run full size refrigerator from existing inverter. Fully charged before I left. 6 hours on the road checked the status and had barely decreased. Battery performed well. Upon arrival, even ran all leveling and slides off battery perfectly. In the past had to plug RV in to get it all done with confidence. Bluetooth app is ok, not great but functional for monitoring. Will be looking for additional batteries for boat next and will use this brand for the value.
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Reviewed in the United States on March 27, 2026 by Deven M.
Color: 100Ah BASIC
Size: 1 pack
I know that has become a cliche but for me this thing has worked perfectly running the bait well pump, stereo and all the other electronics on the boat. It charges no problem and runs all day and still has an 80- 90 % charge. Can not believe how much the price point has come down. Why would you buy a wet cell battery? Well, they don't start engines. But until they do, if you need a deep cycle, get one of these. Love it so far. Only time will tell.
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Reviewed in the United States on March 29, 2026 by mndm
Color: 100Ah BASIC
Size: 2 pack
So far over 2 trips to the Desert exceptional! I dry camp, the recovery time (Charge Rate) with a small solar panel was amazing. I barely ran the Gen all weekend. Definitely lighter than what I replaced, the built-in handles are great.
Reviewed in the United States on March 26, 2026 by George T Hale III