The Rich Solar ALPHA 1 PRO 12V 100Ah LiFePO4 Battery is a lithium iron phosphate battery for compatible RV, marine, cabin, boat, and off-grid power systems. Identified by model RS-B121SP, it provides 1,280Wh nominal energy at 12.8V, with a 100Ah nominal capacity and 100A maximum charging and discharge ratings. This PRO configuration includes an internal heating function for supported low-temperature charging conditions and built-in Bluetooth communication for app-based battery status monitoring. Its integrated battery management system provides documented overcharge, over-discharge, over-current, short-circuit, temperature, and cell-balancing protections. The official specification sheet lists an IP65 waterproof and dustproof rating, a UL94 V-0 rated plastic shell, and conformity to ANSI/CAN/UL 1973 for batteries used in stationary and motive auxiliary power applications.
The ALPHA 1 PRO provides 1,280Wh of nominal battery storage in a compact 12V-class format for properly designed electrical systems. Its 10.2" × 6.6" × 8.3" footprint and approximately 24.3 lb weight support installations where energy capacity, equipment space, and handling weight all matter.
The internal heater is designed to support charging when the battery temperature is low and charging current is present. According to the official manual, heating begins when the internal temperature probe detects 41°F or below during charging, and stops when the charger is disconnected or the detected temperature reaches 50°F or higher.
Built-in Bluetooth communication allows users to view supported battery information through the compatible mobile app, including state of charge, voltage, current, temperature, and capacity data. This provides practical status visibility for mobile and remote-use systems where checking battery condition helps with power planning.
The ALPHA 1 PRO specification sheet identifies an integrated battery management system, IP65 waterproof and dustproof protection, a UL94 V-0 rated plastic shell, and conformity to ANSI/CAN/UL 1973. Rich Solar lists the ALPHA PRO Series with a 10-year prorated limited warranty, including full replacement coverage in years 1–3 and prorated replacement coverage in years 4–10, subject to the manufacturer’s complete warranty terms and required battery care.
The ALPHA 1 PRO combines compact lithium energy storage, internal heating support, and Bluetooth monitoring for compatible RV, marine, cabin, and off-grid battery systems.
Final system planning should confirm charging equipment, inverter and load requirements, cable sizing, mounting location, temperature conditions, and battery configuration before installation.
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Contact Us for a Quote| Brand | Rich Solar |
| Series | ALPHA PRO Series |
| Model | ALPHA 1 PRO |
| SKU / Model Number | RS-B121SP |
| Product Type | Lithium iron phosphate (LiFePO4) battery |
| Nominal Voltage | 12.8V |
| Nominal Capacity | 100Ah |
| Nominal Energy | 1,280Wh |
| Charging Voltage | 14.4V |
| Standard Charging Current | 50A |
| Maximum Charging Current | 100A |
| Continuous Discharge Current | 100A |
| Maximum Discharge Current | 100A |
| Discharge Cutoff Voltage | 11.2V |
| Battery Management System | Integrated BMS with overcharge, over-discharge, over-current, short-circuit, temperature, and balancing protections |
| Heating Function | Internal heater; 100W heating power listed in official documentation |
| Heating Activation Condition | Charging current present and internal probe temperature at or below 41°F |
| Heating Stop Condition | Charger disconnected or internal probe temperature at or above 50°F |
| Communication Mode | Bluetooth |
| App Monitoring Data | State of charge, voltage, current, temperature, and capacity information listed by Rich Solar |
| Certification / Conformity | Intertek ETL Listed; conforms to ANSI/CAN/UL 1973:2022 Ed. 3 for batteries used in stationary and motive auxiliary power applications |
| Ingress Protection | IP65 waterproof and dustproof rating listed by Rich Solar |
| Shell Material | Plastic shell; UL94 V-0 flame-retardant rating listed by Rich Solar |
| Charging Temperature | 32°F to 131°F, with current-dependent charging limits shown in manufacturer documentation |
| Discharge Temperature | -4°F to 140°F |
| Dimensions | 10.2" × 6.6" × 8.3" without handle and terminals |
| Weight | Approximately 24.3 lb / 11.0 kg |
| Parallel Configuration | Maximum of four batteries in parallel; do not connect batteries of different brands, models, or specifications in parallel, and use equal-length, matching parallel cables according to the manual |
| Mounting Orientation | Install with positive and negative terminals facing upward; do not wall-mount without the required mounting bracket, according to the manual |
| Charging Limitations | Charging voltage must not exceed 14.4V; charging current must remain within manufacturer limits; charge only within the specified temperature range; reverse charging is prohibited |
| Warranty | 10-year prorated limited warranty for ALPHA PRO Series; full replacement coverage in years 1–3 and prorated replacement coverage in years 4–10, subject to Rich Solar warranty terms |
Rich Solar ALPHA 1 PRO Specification Sheet
