The TTWEN 12V 100Ah battery is a practical starting point for an RV or van house-power system that needs a 1,280Wh LiFePO4 bank in a Group 31 footprint. Price $229.99; $225.39 with code SEGPDGWJ (2% off). Best for van and motorhome owners building a 12V house-power system around a Group 31 LiFePO4 battery.
A 1,280Wh deep-cycle battery for a 12V RV system.
The TTWEN 12V 100Ah battery is a practical starting point for an RV or van house-power system that needs a 1,280Wh LiFePO4 bank in a Group 31 footprint. The maker lists a 100A BMS, M8 terminals, IP65 protection, and a 14.6V charging voltage. That gives buyers useful design details, but this is a battery rather than a complete portable power station: you still need compatible charging, protection, and any inverter or distribution hardware your loads require. The detailed specification table and FAQ give a 100A continuous rating, and low-temperature protection applies below the 0°C minimum charging temperature, so keep charging within the stated 0 to 45°C range.
What we like
- Useful capacity in a familiar case size
- Key electrical details are listed
- Built for a house-power role
Keep in mind
- It is one part of an electrical system
- Keep charging in range
The details that matter.
Manufacturer specifications for the configuration reviewed.
- Chemistry
- LiFePO4 (lithium iron phosphate)
- Nominal voltage
- 12.8V
- Rated capacity
- 100Ah / 1,280Wh
- Battery management system
- 100A BMS listed
- Charging
- 14.6V; 20A standard charge listed
- Terminals
- M8
- Ingress protection
- IP65
- Cycle life
- 4,000 or more cycles
- Dimensions
- 333 × 176 × 221mm; height listed excluding terminal posts
- Weight
- About 11.5kg
- Temperature range
- Charging: 0 to 45°C; discharging: −20 to 60°C
- Model / configuration
- TTWEN 12V 100Ah Group 31 RV battery
A battery for a built system
The TTWEN is aimed at an RV or van owner who is assembling a 12V house-power bank. It is not a self-contained station with AC sockets, a screen, and included charging accessories. Decide how the battery will be charged and which loads will run from DC or an inverter before comparing the 1,280Wh capacity with a plug-and-play station.
Match the charger and protect the system
TTWEN lists 14.6V charging and a standard 20A charge rate. Use a charger intended for LiFePO4 and follow the battery maker’s installation instructions. The page says this is not a starter battery; do not substitute it for a vehicle starting battery.
Measure the physical installation
The case is listed at 333 × 176 × 221mm, with the height excluding terminal posts, and about 11.5kg. Check the tray, cable reach, post clearance, and secure mounting in the actual compartment.
Use the tracked LiFePO4 Store link
Open our tracked LiFePO4 Store referral link and search for the TTWEN 12V 100Ah Group 31 battery.
Our buying advice and the LiFePO4 Store code
Use code SEGPDGWJ for 2% off at LiFePO4 Store. The price box shows the listed price and the with-code price.
Why we like it.
Useful capacity in a familiar case size
The 12.8V and 100Ah rating works out to 1,280Wh. Group 31 sizing gives RV owners a concrete starting point for checking a battery tray and replacement fit.
Key electrical details are listed
The page specifies a 100A BMS, M8 terminals, 14.6V charging, and a 20A standard charge rate. Those numbers help when matching a charger and planning a 12V system.
Built for a house-power role
The product is described as a deep-cycle RV battery and lists IP65 protection. That makes its intended use clearer than a general-purpose starter battery.
A few things to consider.
It is one part of an electrical system
There is no built-in AC inverter or power-station interface in the specifications. Budget for compatible charging, wiring, overcurrent protection, and conversion hardware as needed.
Keep charging in range
The listing gives a 0 to 45°C charging range with low-temperature protection.
Get the 12V 100Ah RV LiFePO4 Battery.
Van and motorhome owners building a 12V house-power system around a Group 31 LiFePO4 battery. Check the current price and configuration with LiFePO4 Store.
Your LiFePO4 Store reader offer.
2% off with code SEGPDGWJ at the official LiFePO4 Store store.
See the LiFePO4 Store code, terms & redemption stepsA few good questions.
What is the discount code for the TTWEN 12V 100Ah Group 31 RV LiFePO4 Battery?
The LiFePO4 Store discount code is SEGPDGWJ for 2% off at ttwen.com. That brings the TTWEN 12V 100Ah Group 31 RV LiFePO4 Battery to $225.39 ($229.99 before the code), before tax and shipping. Open the shop link, enter SEGPDGWJ at checkout, and confirm the 2% off in the order summary.
Can I use it as a vehicle starter battery?
No. TTWEN says not to use this deep-cycle battery as a starter battery.
What charger voltage does it need?
The listing specifies 14.6V charging and a 20A standard charge rate. Use a compatible LiFePO4 charger and follow the manual.
Does the page agree on its continuous current?
No. The detailed table and FAQ give 100A, while introductory copy says 150A for continuous charge and discharge.
About this review
TTWEN official product listing and specification table, with our editorial assessment. Product details checked October 23, 2026 against LiFePO4 Store's official product listing. Shop the official LiFePO4 Store store. Images courtesy of the manufacturer. Our editorial standards.
