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The Rich Solar ALPHA 3 12V 300Ah LiFePO4 Battery (RS-B123S) is a 12.8V lithium iron phosphate battery that stores 3,840Wh in a single 20.6 x 10.6 x 8.7 inch case. It supports 300A of continuous charge and discharge current, which is enough headroom for a large 12V inverter, and up to four units connect in parallel for 1,200Ah at 12V.
Built-in internal heating lets the ALPHA 3 charge safely in cold weather, and Bluetooth monitoring through the RICH SOLAR app shows battery status in real time. Grade A+ LiFePO4 cells are rated for 5,000+ cycles, the housing is UL94 V-0 flame-retardant with an IP65 rating, and Rich Solar backs the battery with a 5-year warranty.
One ALPHA 3 replaces three 100Ah batteries, with one set of terminals and one BMS. That simplifies wiring and saves space in an RV bay, van or cabin battery box.
The BMS allows 300A of continuous current in both directions. That supports high-draw loads like a 3,000W 12V inverter and fast charging from large alternator chargers, inverter chargers and solar arrays.
LiFePO4 cells should not be charged below freezing. The ALPHA 3 automatically warms itself so it can charge safely in cold weather, and low-temperature charging protection pauses charging until conditions are safe.
Connect to the RICH SOLAR app to view real-time battery status from your phone, without adding a separate battery monitor.
Grade A+ LiFePO4 cells are rated for 5,000+ cycles. The maintenance-free chemistry needs no watering or equalizing, and self-discharge is 5% or less per month in storage.
The battery management system guards against overcharge, over-discharge, overcurrent, short circuits and temperature extremes. The UL94 V-0 flame-retardant housing carries an IP65 rating against dust and water spray.
RVs and fifth wheels. Run a residential fridge, microwave and inverter loads from one 12V battery.
Cabins. Store a day's worth of solar for lights, a fridge, water pump and electronics.
Vans and overland rigs. Get 300Ah of storage with built-in heating for winter trips.
Boats. Power house loads and electronics. Rich Solar lists marine use as a primary application.
Home backup. Pair it with a 12V inverter charger to keep essentials running through outages.
Versus three 100Ah batteries. Three batteries need more space, more cables and careful matching. The ALPHA 3 provides 300Ah in one case with one BMS and one Bluetooth connection.
Versus the ALPHA 3 LITE. The LITE has the same 300Ah capacity and 300A current but no heater or Bluetooth, and it is rated for 4,000+ cycles. Choose the ALPHA 3 when the battery will charge in freezing weather or you want app monitoring.
Versus lead-acid batteries. A lead-acid bank of similar usable capacity is much heavier, needs more maintenance and lasts far fewer cycles.
This may be a good fit if
Up to four in parallel, for 1,200Ah and 15,360Wh at 12V.
Yes. Bluetooth monitoring is built in and works with the RICH SOLAR app.
The built-in heater warms the battery so it can charge in cold weather. Low-temperature charging protection keeps charging off until the cells are warm enough.
Rich Solar provides a 5-year warranty on the ALPHA 3.
The Rich Solar ALPHA 3 12V 300Ah LiFePO4 Battery gives RVs, cabins, vans and boats 3,840Wh of storage with 300A current, built-in heating and Bluetooth monitoring. At Outbound Power, we help customers match batteries to their inverters, chargers and solar. If you have questions, our team is happy to help.
Rich Solar ALPHA 3 12V 300Ah LiFePO4 Battery Specifications |
|
|---|---|
| Model | ALPHA 3 (RS-B123S) |
| Cell Chemistry | LiFePO4, Grade A+ cells |
| Nominal Voltage | 12.8V |
| Rated Capacity | 300Ah |
| Nominal Energy | 3,840Wh |
| Cycle Life | 5,000+ cycles |
| Charging Voltage | 14.4V |
| Maximum Charge Current | 300A |
| Maximum Continuous Discharge Current | 300A |
| Parallel Expansion | Up to 4 units (4P) |
| Self-Discharge | 5% or less per month |
| Internal Heating | Yes |
| Bluetooth | Yes, RICH SOLAR app |
| Low-Temperature Charging Protection | Yes |
| Charge Temperature | 32°F to 131°F (0°C to 55°C) |
| Discharge Temperature | -4°F to 140°F (-20°C to 60°C) |
| BMS Protection | Overcharge, over-discharge, overcurrent, short circuit, temperature |
| Housing | UL94 V-0 flame-retardant |
| IP Rating | IP65 |
| Dimensions | 20.6 x 10.6 x 8.7 in |
| Weight | 71.7 lbs |
| Certifications | UN 38.3, MSDS |
| Warranty | 5 years |
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