1 / 5Hover to zoom · click to enlargeALPHA 3 - 12V 300Ah LiFePO4 Battery
Ships from Rich Solar's U.S. warehouse
- Free shipping, no minimumTo the lower 48 states and Washington, D.C.
- Authorized Rich Solar dealerFull manufacturer warranty and support.
- 5-year warrantyProrated, backed by Rich Solar.
- 30-day returnsOn new, unused items.
Shipping & handling
- Orders are processed within 1–3 business days.
- Parcel items typically arrive 3–7 business days after shipping. Freight items (panels, batteries, inverters and kits) typically arrive 5–14 business days after shipping.
- Rich Solar and SunGoldPower products ship free to the lower 48 states and Washington, D.C., with no minimum. Lensun shipping is based on weight and shown at checkout.
- Freight deliveries need an appointment and a signature, and are delivered curbside.
Returns & refunds
Request a return within 30 days of delivery. Items must be new, unused, not installed, and in their original packaging.
- Contact us first for a Return Merchandise Authorization (RMA). Returns sent without one are refused.
- For a change-of-mind return, you pay return shipping and a 15% restocking fee is deducted from your refund.
- Damaged on arrival? Report it within 3 business days of delivery and we arrange a replacement or full refund.
Warranty
Rich Solar's warranty page covers the ALPHA series for 5 years on a prorated schedule: 100% in year 1, 80% in year 2, 60% in year 3, 40% in year 4 and 20% in year 5.
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A 12-volt, 300Ah lithium battery with built-in heating and Bluetooth
The ALPHA 3 is Rich Solar's 12.8V 300Ah LiFePO₄ battery. It stores 3,840Wh, is rated for 5,000+ cycles at 80% depth of discharge, and supports up to 300A of continuous discharge.
A built-in 100W heater lets it charge in cold weather, and Bluetooth monitoring in the RICH SOLAR app shows real-time battery status. Up to four batteries can run in parallel for RV, marine, off-grid and backup power systems.
Long lifespan and efficient power
Rated for 5,000+ cycles at 80% depth of discharge, the ALPHA 3 stores 3,840Wh with 5% or less self-discharge per month.
- Maintenance-free LiFePO₄ chemistry
- 5-year prorated warranty
Premium safety and durability
Grade A+ LiFePO₄ cells and an advanced BMS protect against overcharge, over-discharge, overcurrent, short circuits and temperature risks.
- UL94 V-0 flame-retardant housing
- IP65 waterproof construction
- UN 38.3 and MSDS certified
All-season performance
A built-in 100W heater warms the battery so it can charge safely in cold weather.
- Charges from 32°F to 131°F, discharges from -4°F to 140°F
- Heating starts below 37.4°F and stops above 46.4°F
- Low-temperature charging protection with auto recovery
Smart monitoring and expansion
Bluetooth monitoring in the RICH SOLAR app shows state of charge, voltage, current, temperature, cycle count and system status.
- Up to 4 batteries in parallel (4P)
- For RV, marine, off-grid and backup power
Specs, images and product claims on this page come from Rich Solar's ALPHA 3 product page, August 2026 spec sheet and user manual. Last checked Oct 30, 2026.
Specifications
From Rich Solar's published specifications for model RS-B123S.
Battery
| Nominal voltage | 12.8V |
|---|---|
| Rated capacity | 300Ah |
| Nominal energy | 3,840Wh |
| Cell chemistry | LiFePO₄ |
| Cycle life | 5,000+ (80% DoD) |
| Parallel expansion | Up to 4 units (4P) |
| Self-discharge | ≤5% per month |
Charge & discharge
| Charging method | CC/CV |
|---|---|
| Max charge voltage | 14.4V |
| Recommended charge voltage | 14.2V |
| Discharge cutoff voltage | 10.0V |
| Recommended charge current | 150A |
| Max charge current | 300A |
| Max continuous discharge current | 300A |
| Max output power | 3,840W |
Environment
| Charge temperature | 32°F to 131°F |
|---|---|
| Discharge temperature | -4°F to 140°F |
| Storage temperature | -4°F to 113°F (<1 month), 32°F to 95°F (>3 months) |
| Internal heating | 100W, starts below 37.4°F, stops above 46.4°F |
| Low-temperature charging protection | Yes, auto recovery |
| Ingress protection | IP65 |
Physical & certification
| Dimensions | 20.6 × 10.6 × 8.7 in |
|---|---|
| Weight | 71.7 lb |
| Terminals | M8 |
| Housing | UL94 V-0 flame-retardant plastic |
| Bluetooth | Yes, RICH SOLAR app |
| Certifications | UN 38.3, MSDS |
| Warranty | 5-year (prorated) |
| Model / SKU | RS-B123S |
What's in the box
Package contents as listed by Rich Solar.
Documents & certificates
Official files from Rich Solar.
Customer reviews
Reviews from Sun Energy Depot customers, collected by Judge.me.
Pairs well with
Other parts you may need for a ALPHA 3 setup.
