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BCI Group 27 Size, Lock-in Fit for RV & Marine Application

12V 100Ah Group 27, Perfect Fit for RV & Marine Use
Designed with Group 27 size, LiTime 12V 100Ah lithium battery is suitable for RV and marine use, and fits Group 27-31 battery boxes. Compact and lightweight design, it delivers reliable power for your adventures. Whether on the road or on water, this battery ensures durable performance in any setting.
Monitor Your Battery Anytime, Anywhere
With Bluetooth 5.0, managing LiTime 12V 100Ah Group 27 lithium battery has never been easier. Simply scan the QR code on the battery to automatically connect to your smartphone via the LiTime APP. From there, you can turn the discharge off, control battery off, and monitor real-time data. Stay informed about your battery’s status and the entire system’s performance—anytime, anywhere. Smart Bluetooth would level up your battery-using experience to the next level.
Smarter, Safer Power for Every Adventure
Experience smart and durable power for RVs and marine use. Low-temp protection fights against damage from freezing weather, while IP65 waterproof and dustproof design thrives in marine environments. With robust power packing in Group 27 size, LiTime 12V 100Ah Group 27 battery is your ultimate power solution for every journey.


EV Grade Cells, Advanced BMS,Enhanced Performance
LiTime 12V 100Ah Group 27 LiFePO4 battery is designed with only 4 high-consistency cells, ensuring balanced performance, enhanced efficiency, and extended lifespan. With 4000+ cycles@100% DOD, 6000+ cycles@80% DOD, and 15000+ cycles@60% DOD, it provides consistent power. Enjoy eco-friendly & robust energy that keeps your power up longer, making it the perfect choice for sustainable and cost-effective energy storage.


Designed for RVs with Group 27 Battery Compartment
LiTime 12V 100Ah LiFePO4 battery perfectly fits RVs with Group 27 battery compartments, including popular models like the 2024 Brinkley Model Z 2900, Four Winds 22E, and Forester. In addition, it's also suitable for Group 31 battery box. With a 10% higher volumetric energy density compared to LiTime 12V 100Ah basic battery, it delivers the same power in a more compact size.
Reliable RV Power, Wherever the Road Leads
From lights and fridges to coffee makers and air conditioners, LiTime delivers steady energy for your entire RV setup. Choose 1280Wh or 2560Wh system options to match your travel style, and enjoy smooth, dependable power that keeps every essential running—mile after mile.
Assemble Home Backup System to 20.48kWh Energy
LiTime 12V 100Ah deep cycle battery features 1200Wh usable energy & 1200W max. output power, and supports up to 4P4S, combining to create a 51.2V 400Ah energy system. With 20.48kWh & 20.48kW, it delivers maximum energy and power for home storage and off-grid applications. Whether you’re powering a modern eco-friendly home or living off the grid, this system ensures reliable, sustainable energy tailored to your needs.
Versatile Energy for Every Adventure
Designed for versatility, LiTime 12V 100Ah Group27 lithium battery is perfect for RVs, marine use, and off-grid living. Its Group27 size ensures easy installation in your RV or boat, while IP65 waterproofing makes it durable for marine environments. A reliable power solution for all your adventures.
Tips for Optimal Performance
For optimal performance and safety, the LiTime 12V 100Ah Group 27 battery can be installed in the front, side, or bottom orientations. Back and top orientations are not permitted. The battery also supports four charging methods—please follow these guidelines to ensure safe, reliable operation in any setup.


See What's Inside: Unboxing Now




The main difference between LiTime Group 27 and Group 31 battery lies in their physical size. Group 27 batteries (12.13*6.69*8.31 in) are generally smaller compared to Group 31 batteries (13*6.77*8.43 inch), which is compatible with Group 27-31 battery boxes.
Its compact size is suitable for most RV types including the 2024 Brinkley Model Z 2900, Four Winds 22E and Forester. With 10% higher energy density compared to the 12V 100Ah Group31 battery, it delivers the same power in a more compact size, lightening the load on the RV, and making it easier to carry and travel.
Please charge the Bluetooth battery first after receiving it. This will ensure that the battery can be turned on and the Bluetooth connection is established. (Our Bluetooth batteries are delivered in the off state, the virtual voltage of the battery terminal is 3V-5V, this is a normal phenomenon, just use the AC-DC charger or MPPT to charge the battery and turn on the battery, it can be used normally.)
If you intend to store the battery for an extended period without use, we recommend charging it to a SOC 50% and conducting maintenance every three months. These measures will help preserve its functionality and performance in the long run.
The 12V Group 27 lithium battery supports maximum connections of 4 in series and 4 in parallel. Allow you to build up a maximum battery system of 16 battery units with 20.48kWh Max. capacity and 20.48kW of Max. power.
Note: To connect in series or /and parallel, batteries should meet the below conditions:
a. identical batteries with the same battery capacity (Ah) and BMS (A);
b. from the same brand (as lithium battery from different brands has their special BMS);
c. purchased in near time (within one month)
1. Using Solar Panels
The battery can be fully charged in one day (with effective sunshine 4.5 hrs/day) by 400W solar panels. It may take more than one day to fully charge the battery by ≥400W solar panels since the duration and intensity of light would be a great factor for their charging efficiency.
2. Generator/Alternator
If the alternator or generator supports DC output, a DC-to-DC charger is needed to connect the battery to the generator; if your alternator or generator supports AC output, please add a suitable battery charger to connect the battery and the generator according to our recommendations. The Recommended Charging Voltage: 14.2V - 14.6V. The Recommended Charging Current: ① 20A (0.2C): the battery will be fully charged in around 5 hrs to 100% capacity; ② 50A (0.5C): the battery will be fully charged in around 2 hrs to around 97% capacity.
3. LiFePO4 Smart Chargers
To charge 12V battery, it is recommended to use 14.6V battery charger.
The Recommended Charging Voltage: 14.2V - 14.6V.
The Recommended Charging Current: ① 20A (0.2C): the battery will be fully charged in around 5 hrs to 100% capacity; ② 50A (0.5C): the battery will be fully charged in around 2 hrs to around 97% capacity.
Apple APP Store and Google play. Download and open the app to directly scan the QR code and connect the battery or search for nearby Bluetooth batteries. Or visit LiTime App download page.
LiTime 12V 100Ah Group 27 battery comes with IP65 waterproofing, which is suitable for boats, trolling motors, and more marine environments. Besides that, it can also be applied to camping, home storage, off-grid and solar energy. One battery for your diverse needs.
Had the first one for some time. Running livescope. Bought 2 more for trolling motor. Work great. Friend also bought 2 after seeing mine.
Battery and charger was shipped-very fast both products was packaged very good with no damage . I charged the battery every thing worked perfect I really like the Bluetooth app to monator the battery I can’t wait for better weather to try it out !
First off its would like to say is that I haven't been able to use the battery yet. But I will touch on some points i know so far. The Bluetooth seems to be working great as it gives you real time info about the battery and keep track of your charging so you dont over charge. I also love the weight of the battery. I have the group 27, as its perfect for my kayak, with this being said, i will update when I have a chance to actually but the battery to a test.
Site was easy to navigate, batteries came in less than a week, they run great on my 24v 80lb thrust Minn Kota Terrova. Trolled in the lake on full power and had to turn it down it was too fast. Fished docks in a bay and they lasted all day with lots of life left. I’ll be buying another for my livescope unit.
I bought this set to replace the AGM batteries in a class C camper that we just got. They were the perfect size to fit in the stairwell opening. I really like the bolt style terminals for securing the cables, and the Bluetooth capability to monitor the charge status. I also added a third one of these batteries in an adjacent storage compartment to give us additional boondocking capability. The LiTime batteries are my first choice for our campers.
I saw a review on YouTube that compared LiTime with eight otherbattery brands. It turned out that LiTime equaled Battleorn in amp hours and strength. LiTime matched it very well for 1/3 the price. I can’t believe they performed so well.
Got them setup and all is great! Very satisfied at this point with them. My friend has them and they have given him great service and so far me too. We have two for 24 volt system.
Thanks for a great product.
So far so good! My order came quick without any issues. I charged the batteries, balanced them, and then connected them in series. After 2-3 hours of running my trolling motor, I still had 95% charge!











































































































































































































































































































































