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Rich Solar ALPHA 2 PRO | 12V 200Ah LiFePO4 Battery Rich Solar ALPHA 2 PRO | 12V 200Ah LiFePO4 Battery
SKU: RS-B122SP
- Nominal storage 2.56kWh
- Capacity 200Ah
- Cold-weather feature Self-heating
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Rich Solar ALPHA 2 PRO 12V 200Ah LiFePO4 Battery
The Rich Solar ALPHA 2 PRO is a premium 12V 200Ah lithium iron phosphate battery built for RVs, vans, cabins, tiny homes, marine systems, and off-grid solar storage. With 2560Wh of energy capacity, 7,000+ cycles at 70% DoD, internal heat technology, a Safe BMS System, industrial-grade battery cells, UL1973 certification, and a 10-year prorated limited warranty, it gives serious 12V power systems a long-life lithium storage foundation.
ALPHA 2 PRO: size your 12V RV or off-grid battery bank
One ALPHA 2 PRO stores 2,560Wh nominally at 12.8V and 200Ah. Its 200A maximum continuous discharge is a battery-side limit. Inverter losses, wiring, temperature and the reserve you keep reduce usable AC energy; watt-hours do not guarantee appliance runtime.
How the heater and Bluetooth work
The built-in 100W heater requires charging current; the battery does not power the heater from its own stored energy. The manual starts heating at an internal probe temperature of 41°F (5°C) or below and stops at 50°F (10°C) or above, or when the charger is disconnected. These are internal cell-probe temperatures, not an ambient-weather guarantee.
Bluetooth provides nearby monitoring through the RICH SOLAR app. It does not by itself provide internet or cellular monitoring.
Choose the charging system and installation space
The current series sheet recommends 100A charging and lists 200A maximum charging current. Use a LiFePO4-compatible charger or solar charge controller, with a 14.2V recommended charge voltage and 14.4V maximum in that sheet. Solar panels do not connect directly to the battery without charge regulation.
Case dimensions: 20.9 × 8.1 × 8.5 in. Published net weight: 52.9 lb. Leave room for terminals, cable bends and service access. The manufacturer documents up to four same-model batteries in parallel; this is not permission to mix LITE/PRO models or assume series wiring is supported.
Discharge setting note: the linked model manual lists an 11.2V nominal discharge cutoff, while the August 2026 family sheet lists 10.0V. Confirm the applicable supplied-revision setting before changing a charger or inverter cutoff; the lower published number is not an instruction to discharge further.
What’s included
- 1 × ALPHA 2 PRO LiFePO4 battery
- 2 × M8 × 12 mm combination screws
- 2 × M8 × 16 mm combination screws
- 2 × M8 × 20 mm combination screws
- 1 × ALPHA 2 PRO user manual
The different screw lengths are alternatives for terminal connections; use the correct length for the installed lugs. A charger, inverter, solar controller, system cables and external circuit protection are separate.
Compare features and warranty
PRO’s 7,000+ advertised cycles are stated at 70% depth of discharge. Those different test conditions are not a like-for-like service-life guarantee. The 10-year warranty is prorated, subject to RICH SOLAR’s limited-warranty terms.
Compare ALPHA 2 LITE 200Ah, browse Rich Solar batteries by capacity and voltage, or use our RV lead-acid to lithium conversion guide to check the rest of your charging system.
Product Overview
The ALPHA 2 PRO is designed for customers who want a higher-end 12V lithium battery with stronger cycle life, premium protection, and better long-term durability. It is a strong fit for RV solar systems, camper vans, travel trailers, cabins, tiny homes, boats, and off-grid solar storage builds where dependable battery capacity matters.
Compared with traditional lead-acid storage, LiFePO4 chemistry offers longer service life, more usable energy, lower maintenance, and more consistent performance over time. The ALPHA 2 PRO adds internal heating, high-quality battery cells, and a Safe BMS System to support more demanding mobile and off-grid use.
Built for Premium 12V Solar and Off-Grid Power
The ALPHA 2 PRO gives 12V systems a powerful lithium battery upgrade with the capacity, cycle life, and protection needed for real RV, marine, cabin, and off-grid use. It is ideal for customers who want more than a basic battery and are building a system they expect to rely on for years.
Key Features That Matter
The ALPHA 2 PRO focuses on the features customers actually care about when choosing a premium 12V lithium battery: cold-weather support, long cycle life, safer battery management, and higher-grade cell construction.
Internal heating helps improve cold-weather usability for RVs, trailers, cabins, marine compartments, and seasonal off-grid systems. It is especially useful when battery charging conditions can drop below normal lithium charging temperatures.
Designed for consistent and durable performance, the ALPHA 2 PRO gives solar, RV, marine, and off-grid users a longer-lasting battery option than traditional lead-acid storage and many basic lithium batteries.
The Safe BMS System helps the battery respond accurately and quickly to abnormal conditions, including overcharge, over-discharge, overcurrent, short-circuit, low temperature, and high temperature situations.
Premium cell construction helps support long-term durability, stable output, and dependable performance for customers who expect their battery bank to handle regular solar, RV, marine, or off-grid use.
Best Uses
- RV solar battery banks
- Camper vans and travel trailers
- Cabins, tiny homes, and shed power systems
- Marine and boat electrical systems
- Off-grid solar energy storage
- Backup power for essential 12V loads
- Premium lead-acid battery replacement projects
- Long-term 12V solar storage builds
Key Benefits
- 12V 200Ah LiFePO4 lithium battery
- 2560Wh energy storage capacity
- 7,000+ cycles at 70% DoD
- Internal heat technology for colder environments
- Safe BMS System protection
- Industrial-grade battery cells
- UL1973 certified
- Premium 10-year prorated limited warranty
- Designed for RVs, cabins, tiny homes, marine, and off-grid power
Plan a lithium battery change
If you are replacing an RV lead-acid battery, our RV lead-acid to lithium guide explains charging, wiring and compatibility checks before changing chemistries.
ALPHA 2 PRO: compare the versions
Each ALPHA 2 PRO stores 2,560Wh nominally in a 12V-class, 200Ah battery. The versions below share the same nominal capacity; heating, monitoring and cycle ratings distinguish them.
| Model | Bluetooth | Internal heater | Advertised cycles |
|---|---|---|---|
| ALPHA 2 LITE | No | No | 4,000+ (80% DoD) |
| ALPHA 2 | Yes | Yes | 5,000+ (80% DoD) |
| ALPHA 2 PRO | Yes | Yes | 7,000+ (70% DoD) |
Cycle ratings depend on the manufacturer’s test conditions and do not guarantee identical service life. Nominal watt-hours describe stored energy; inverter losses and your chosen discharge reserve reduce usable AC energy.
The current ALPHA 2 series datasheet lists 14.2V recommended charging, 14.4V maximum and 200A maximum continuous discharge. Match the charging setup to the supplied battery revision and temperature limits in its manual.
| ALPHA 2 PRO — verified product specifications | |
| Selected variant SKU | RS-B122SP |
|---|---|
| Battery Chemistry | LiFePO4 |
| Nominal Voltage | 12.8V |
| Rated Capacity | 200Ah |
| Nominal Energy | 2560Wh |
| Recommended Charge Voltage | 14.2V (August 2026 series sheet) |
| Maximum Charge Voltage | 14.4V |
| Recommended Charge Current | 100A |
| Maximum Charge Current | 200A |
| Maximum Continuous Discharge Current | 200A |
| Nominal DC Power at Discharge Limit | 2560W at 12.8V; not guaranteed AC inverter output |
| Discharge Cutoff | 11.2V in model manual; 10.0V in August 2026 series sheet — confirm supplied revision |
| Parallel Expansion | Up to 4 same-model batteries; follow manual for balancing and wiring |
| Bluetooth | Yes — RICH SOLAR app |
| Internal Heating | 100W; requires charging current |
| Heater Start | Internal temperature ≤41°F / 5°C while charging |
| Heater Stop | Internal temperature ≥50°F / 10°C or charger disconnected |
| Cycle Life | 7,000+ at 70% DoD (manufacturer rating) |
| Charge Temperature | 32°F to 131°F / 0°C to 55°C |
| Discharge Temperature | -4°F to 140°F / -20°C to 60°C |
| Storage Temperature | -22°F to 131°F (<1 month); 14°F to 113°F (>3 months), ≤90% RH |
| Monthly Self-Discharge | ≤5% |
| IP Rating | IP65 — dust and water-jet resistance; not submersible |
| Terminals | M8 |
| Housing | UL94 V-0 flame-retardant plastic |
| Dimensions (L × W × H) | 20.9 × 8.1 × 8.5 in |
| Net Weight | 52.9 lb |
| Warranty | 10-year prorated limited warranty |
| Certification and Documents | Intertek certificate to ANSI/CAN/UL 1973; FCC, UN 38.3 and MSDS listed by manufacturer |
| Specification Basis | Exact-model manual and August 2026 series sheet; noted differences require supplied-revision confirmation |
| Detailed BMS data from original model specification — protection thresholds are not charger settings or usable current ratings | |
| Initial AC (1000Hz) Internal Resistance | ≤50mΩ (New Battery within 3 Months) |
| Recommended Storage Temperature | 14°F to 95°F / -10°C to 35°C, 85% RH Max |
| Over Charge Protection Voltage (Cell) | 3.65V ± 0.05V |
| Over Charge Protection Delay Time | 2,000ms ± 1,000ms |
| Over Charge Protection Recovery Voltage (Cell) | 3.55V ± 0.05V |
| Over Discharge Protection Voltage (Cell) | 2.50V ± 0.10V |
| Over Discharge Protection Delay Time | 2,000ms ± 1,000ms |
| Over Discharge Protection Recovery Voltage (Cell) | 3.00V ± 0.10V |
| Over Discharge Protection Release Conditions | Charge Recovery or Voltage Self-Recovery within 60s ± 20s |
| Primary Charge Overcurrent Protection Value | 220A ± 10A |
| First Stage Charge Overcurrent Delay | 10s ± 3s |
| Overcurrent Charge Release Conditions | Automatic Recovery After a Delay of 32s ± 7s |
| Primary Discharge Overcurrent Protection Value | 220A ± 10A |
| Primary Discharge Overcurrent Protection Delay | 10s ± 3s |
| Secondary Discharge Overcurrent Protection Current Value | 660A ± 160A |
| Secondary Discharge Overcurrent Protection Delay | 320ms ± 150ms |
| Overcurrent Discharge Release | Automatic Recovery After a Delay of 32s ± 7s |
| Short Circuit Protection Value | 2,000 ± 500A |
| Short Circuit Protection Delay Time | 560μs to 960μs |
| Short Circuit Protection Recovery | Recovery by Releasing Load After Approximately 5s ± 2s |
| Discharge High Temperature Protection Value | 149°F ± 9°F / 65°C ± 5°C |
| Discharge High Temperature Protection Release Value | 140°F ± 9°F / 60°C ± 5°C |
| Discharge Low Temperature Protection Value | -4°F ± 9°F / -20°C ± 5°C |
| Discharge Low Temperature Protection Release Value | 14°F ± 9°F / -10°C ± 5°C |
| Charging High Temperature Protection Value | 131°F ± 9°F / 55°C ± 5°C |
| Charging High Temperature Protection Release Value | 122°F ± 9°F / 50°C ± 5°C |
| Charging Low Temperature Protection Value | 41°F ± 9°F / 5°C ± 5°C |
| Charging Low Temperature Protection Release Value | 50°F ± 9°F / 10°C ± 5°C |
| FET (Built-In) High Temperature Protection Value | 212°F to 230°F / 100°C to 110°C |
| FET (Built-In) High Temperature Protection Release Value | 176°F to 194°F / 80°C to 90°C |
| Equalizing Opening Voltage | 3.45V ± 0.05V |
| Equalize the Opening Pressure Difference | 15mV |
| Min Balance Current | 40mA |
| Max Balance Current | 100mA |
| Operation Temperature | -4°F to 167°F / -20°C to 75°C |
Frequently Asked Questions
Clear answers to common questions about this product, setup, compatibility, and use.