# Dyness AR1.2 12V100AH TC Group 31 LiFePO4 Battery, 100Ah, 100A BMS

Plan 12V power for RVs, solar, or off-grid systems with the Dyness LiFePO4 battery, featuring a built-in 100A BMS.

- [Original product page](https://www.ofertitastop.com/us/product/dyness-ar1-12v100ah-tc-group-31)
- [View offer](https://www.ofertitastop.com/us/visit/dyness-ar1-12v100ah-tc-group-31)
- Market: US
- Language: en-US
- Currency: USD
- Product updated: 2026-10-22T01:57:13.809Z
- Brand: Dyness
- Model: 12V100AH TC
- SKU: ofertitastop-us-130259
- Category: Hardware > Power & Electrical Supplies
- Source store: amazon US
- Active deal: Yes
- Price: 159.28 USD
- Previous price: 176.98 USD
- Discount: 10%
- Rating: 4.5 / 5
- Reviews: 119

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## Description

For an RV, solar setup, or off-grid system that needs a 12V battery, the Dyness AR1.2 pairs a 100Ah capacity with a built-in 100A BMS. Its 1,280Wh of energy gives you a clear capacity reference when planning a battery bank.

If your priority is fitting a battery into a compact space, the Group 31 format measures 13.00 × 6.77 × 8.43 inches and weighs 21.8 pounds. For a larger storage setup, the battery can be connected with up to four units in series and four in parallel.

The LiFePO4 chemistry, low-temperature charging protection, and protective BMS make it suited to varied applications, from RV and camping power to solar and home energy storage. Choose a single battery for a straightforward 12V installation, or plan a multi-battery bank for a larger system.

## Tech specs
- Name: Dyness AR1.2
- Model: 12V100AH TC
- Type: LiFePO4 lithium battery
- Format: Group 31
- Rated capacity: 100Ah
- Nominal voltage: 12.8V
- Energy: 1,280Wh
- BMS: Built-in 100A
- Dimensions: 13.00 × 6.77 × 8.43 inches
- Weight: 21.8 pounds
- Cycle life: 4,000+ deep cycles
- Protection: Low-temperature charging protection, BMS protection against overcharging, over-discharging, overcurrent, overheating, and short circuits
- Rating: IP65

## Everyday use
The 100A BMS manages key electrical protections, including overcurrent and short-circuit protection, while the IP65 rating is relevant for setups where dust and water exposure are a consideration. For cold-weather operation, charging automatically disconnects below 32°F and resumes at 41°F. The battery also cuts off power at -4°F.

For charging, Dyness recommends a charger designed specifically for LiFePO4 batteries and a 0.2C recharge rate for battery health. This makes charger selection an important part of planning an RV, solar, or off-grid installation. The 12.8V rating and 100Ah capacity also give you useful figures when matching the battery to the requirements of your system.

A buyer-feedback summary highlights off-grid and trolling-motor use as applications customers appreciate. Feedback on charging is mixed, so following the recommended LiFePO4 charging approach is a practical part of setup.

## Who it’s for
This battery suits RV owners, campers, boaters, and off-grid users planning around a 12V LiFePO4 battery. It can also serve in solar systems and home energy storage. Compared with choosing a single battery for a compact installation, connecting multiple units in series or parallel provides an option for building a larger bank, follow the system’s electrical requirements when planning that configuration.

## Practical questions
**What can this battery be used for?** It is intended for RVs, camping, solar systems, off-grid living, boating, and home energy storage. Match the battery to the voltage and capacity requirements of the equipment and system you are setting up.

**What charger should I use?** Dyness recommends a LiFePO4-specific charger and a 0.2C recharge rate for battery health. Using a charger intended for this battery chemistry helps align charging with the product’s guidance.

**How does it handle cold temperatures?** Charging disconnects below 32°F and resumes at 41°F. The battery also cuts off power at -4°F, providing temperature-related protection for cold-weather installations.

## Final verdict
The Dyness AR1.2 brings together a 100Ah capacity, 1,280Wh of energy, a built-in 100A BMS, and low-temperature charging protection in a Group 31 form factor. It is a practical fit for customers planning 12V power for an RV, solar installation, or off-grid setup, with the option to expand into a multi-battery bank.

## Images

![Dyness AR1.2 12V100AH TC Group 31 LiFePO4 Battery, 100Ah, 100A BMS — 1](https://www.ofertitastop.com/i/LlGZdpGG09IncymJfPGYZO487QtMIhC02yDpYIY3x1KXxTnItTVIqqnDeJ3V-vvzwh_D3VKgKEdIVp9kwbcgno5-YK_zf79fKx2tN3OjhX86jjKWrE6w5hCIYw.jpg)

![Dyness AR1.2 12V100AH TC Group 31 LiFePO4 Battery, 100Ah, 100A BMS — 2](https://www.ofertitastop.com/i/oKi91_Gj5Lx3g9zyNP14ebx8ghtDcE793eOwtOo8MXa0reBxl7vqQUYdhQt3bue0c7-6M7l4KiOyWO3Vf_Hn4lUb3di6dzIyU1r9QvTUc9btgewep8YzGlBviQ.jpg)

![Dyness AR1.2 12V100AH TC Group 31 LiFePO4 Battery, 100Ah, 100A BMS — 3](https://www.ofertitastop.com/i/BE-fDhpcgpSYuQexBnwlpa0WSbKaUnTSfcsIE8XSbZdH6PIZ_xdIaMJLvtM2pKIX8we0r8N2H3VP9CUYAdUec_smL2HXl9YIJ8y3kf1BKzi4Pe7YowKkUv0S7w.jpg)

![Dyness AR1.2 12V100AH TC Group 31 LiFePO4 Battery, 100Ah, 100A BMS — 4](https://www.ofertitastop.com/i/gHVply2RHHjCshJP5padusWluRJwRpjoDeBHdAA_a3u0JyldqvfIy0u1EbeVurQQP-h1NLEV6TpY770W9_80EZhObDqhynyHMx3qjonQ5tzR-VXU9pd7bUJ4ig.jpg)

![Dyness AR1.2 12V100AH TC Group 31 LiFePO4 Battery, 100Ah, 100A BMS — 5](https://www.ofertitastop.com/i/heIdyu5CKQ41Vs0iUPr6ySC9S4LCJWFyW6oxGHsyJ4Vm-9zgGY2rtR11OE9NngIBWYhy3MI-b3EkpL7ZvqXCx2RZ3tIOCLf6okRRl2VFlR89q-piJkzQKQU5vQ.jpg)