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Rich Solar ALPHA 3 | 12V 300Ah LiFePO4 Battery - RS-B123S Rich Solar ALPHA 3 | 12V 300Ah LiFePO4 Battery
SKU: RS-B123S
- Rated Capacity 300Ah
- Charging Voltage 14.4V
- Max. Charge Current 300A
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Rich Solar ALPHA 3 12V 300Ah LiFePO4 Battery
The Rich Solar ALPHA 3 is a high-capacity 12V 300Ah lithium iron phosphate battery built for RVs, trailers, vans, boats, cabins, and off-grid solar power systems. With internal heat technology, Bluetooth real-time monitoring, IP65 protection, and a sophisticated Battery Management System, it gives mobile and off-grid builds a dependable lithium battery foundation.
Product Overview
The ALPHA 3 is designed for customers who need more usable 12V battery capacity without building a complicated bank from smaller batteries. It is a strong fit for RV solar systems, camper vans, travel trailers, marine electrical systems, off-grid cabins, and backup energy storage setups.
Its LiFePO4 chemistry is built for long service life, lightweight installation, high charge and discharge cycle performance, and lower maintenance compared with traditional lead-acid batteries. For customers building a serious 12V solar or mobile power system, the ALPHA 3 offers a cleaner, longer-lasting battery upgrade.
Built for Real-World Conditions
Internal heat technology helps support colder operating environments, while the IP65 waterproof and dustproof rating makes the ALPHA 3 practical for RV compartments, boats, trailers, cabins, sheds, and off-grid installations where exposure and temperature changes matter.
Bluetooth monitoring gives users quick visibility into battery status, helping them understand battery condition without needing to guess what is happening inside the system.
Key Features That Matter
Since the original manufacturer description is thin, this section turns the actual feature list into a more useful customer-facing explanation without making the page feel endless.
Helps make the battery more practical for cold-weather RV, trailer, cabin, and seasonal off-grid use where low temperatures can affect charging and performance.
The built-in Bluetooth module lets users monitor battery status from a mobile device, making it easier to check system condition without adding extra monitoring hardware.
The Battery Management System helps protect the battery during daily use by managing safety conditions across charging, discharging, and system operation.
IP65 protection helps guard the battery against dust and water exposure, making it better suited for demanding mobile, marine, and off-grid environments.
The plastic shell is rated UL94 V-0 for flame retardancy, adding another layer of safety confidence for enclosed battery compartments and installed power systems.
Built for a high number of charge and discharge cycles, the ALPHA 3 is made for long-term lithium battery performance with less maintenance than lead-acid batteries.
Best Uses
- RV solar battery banks
- Camper vans and travel trailers
- Cabin and tiny home power systems
- Marine and boat electrical systems
- Off-grid solar storage setups
- Backup power for essential DC loads
- 12V lead-acid battery replacement projects
Key Benefits
- 12V 300Ah LiFePO4 lithium battery
- Internal heat technology for colder environments
- Bluetooth real-time battery monitoring
- IP65 waterproof and dustproof protection
- UL94 V-0 flame-retardant plastic shell
- Lightweight, compact lithium design
- Green energy design without metal contaminants
- Safety tested for extreme performance conditions
- Sophisticated Battery Management System
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.
Compare before you choose
Compare nominal voltage, stored energy, BMS current, temperature protection and communication before sizing a bank.
See the Rich Solar ALPHA 3 LITE | 12V 300Ah LiFePO4 Battery | 12V Lithium Battery for RVs, Cabins, Off-Grid | 4,000 Lifetime Cycles for another RICH SOLAR battery option.
| Specifications | |
| Selected variant SKU | RS-B123S |
|---|---|
| Battery Type | LFP Battery |
| Nominal Voltage | 12.8V |
| Nominal Capacity | 300Ah |
| Minimum Capacity | 300Ah |
| Nominal Energy | 3,840Wh |
| Charging Voltage | 14.4V |
| Discharging Cutoff Voltage | 10.0V |
| Standard Charging Current | 150A |
| Maximum Charging Current | 300A |
| Standard Discharge Current | 150A |
| Maximum Continuous Discharge Current | 300A |
| Shell Material | Plastic Shell |
| Waterproof Class | IP65 |
| Weight | 71.7 lbs / 32.5kg |
| Initial AC (1000Hz) Internal Resistance | ≤50mΩ (New Battery within 3 Months) |
| Monthly Self-Discharge Rate | ≤5% |
| Overall Dimensions | 20.5 x 10.6 x 8.7 in |
| Cycle Life (77°F ± 3.6°F) | ≥5,000 |
| Communication Mode | Bluetooth |
| Discharge Temperature | -4°F to 140°F / -20°C to 60°C |
| Storage Temperature | -4°F to 113°F / -20°C to 45°C, 90% RH Max (Less than 1 Month); 14°F to 113°F / -10°C to 45°C, 90% RH Max (More than 3 Months) |
| Recommended Storage Temperature | 50°F to 95°F / 10°C to 35°C, 85% RH Max |
| BMS Operation | |
| Typical Charging Current | 150A |
| Maximum Charging Current | 300A |
| Typical Discharge Current | 150A |
| Maximum Discharge Current | 300A |
| Maximum Charge Voltage (CC/CV) | 14.4V |
| Over Charge Protection Voltage (Cell) | 3.65V ± 0.05V |
| Over Charge Protection Delay Time | 2,000ms ± 1,000ms |
| Over Charge Protection Recovery Voltage (Cell) | 3.50V ± 0.05V |
| Over Discharge Protection Voltage (Cell) | 2.30V ± 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 | Self-Recovery by Increasing Voltage or Charging |
| Primary Charge Overcurrent Protection Value | 315A ± 10A |
| First Stage Charge Overcurrent Delay Time | 5s (Min 2s, Max 7s) |
| Overcurrent Charge Release Conditions | Automatic Recovery After a Delay of 32 ± 7s |
| Primary Discharge Overcurrent Protection Value | 320A ± 10A |
| Primary Discharge Overcurrent Protection Delay Time | 10s ± 3s |
| Secondary Discharge Overcurrent Protection Current Value | 1,240A ± 100A |
| Secondary Discharge Overcurrent Protection Delay Time | 640ms (Min 480ms, Max 1,000ms) |
| Overcurrent Discharge Release | Automatic Recovery After a Delay of 32s ± 7s |
| Short Circuit Protection Value | 2,240 ± 300A |
| Short Circuit Protection Delay Time | 400μs to 600μs |
| Short Circuit Protection Recovery | Automatic Recovery by Releasing the Load After Approximately 5s ± 2s |
| Discharge High Temperature Protection Value | 140°F ± 5.4°F / 60°C ± 3°C |
| Discharge High Temperature Protection Release Value | 131°F ± 5.4°F / 55°C ± 3°C |
| Discharge Low Temperature Protection Value | -4°F ± 5.4°F / -20°C ± 3°C |
| Discharge Low Temperature Protection Release Value | 14°F ± 5.4°F / -10°C ± 3°C |
| Charging High Temperature Protection Value | 131°F ± 5.4°F / 55°C ± 3°C |
| Charging High Temperature Protection Release Value | 113°F ± 5.4°F / 45°C ± 3°C |
| Charging Low Temperature Protection Value | 37.4°F ± 5.4°F / 3°C ± 3°C |
| Charging Low Temperature Protection Release Value | 46.4°F ± 5.4°F / 8°C ± 3°C |
| FET (Built-In) High Temperature Protection Value | 188.6°F to 199.4°F / 87°C to 93°C |
| FET (Built-In) High Temperature Protection Release Value | 152.6°F to 163.4°F / 67°C to 73°C |
| Balanced Opening Voltage | 3.40V ± 0.03V |
| Balanced Opening Pressure Difference | 15mV |
| Balanced Current | 140mA |
| Operation Temperature | -4°F to 167°F / -20°C to 75°C |
| Storage Temperature | 23°F to 104°F / -5°C to 40°C (Humidity Below 70%, Time ≤ 1 Year) |
| Heating Opening Conditions | Charge |
| Heating Closing Conditions | Disconnect the Charger or Temperature ≥50°F |
| Heating Power | 100W |
| 5,000+ Cycle Life | Delivers exceptional long-term performance and lower ownership costs. |
| 3840Wh Nominal Energy | Provides dependable energy storage with ≤5% monthly self-discharge. |
| Wide Operating Temperature Range | Charges from 32–131°F and discharges from -4–140°F. |
| Bluetooth Monitoring | View real-time battery status through the RICH SOLAR App. |
| Rated Capacity | 300Ah |
| Cycle Life | 5,000+ |
| Max. Charge Current | 300A |
| Max. Continuous Discharge Current | 300A |
| Parallel Expansion | Up to 4 units (4P) |
| Bluetooth | Yes |
| IP Rating | IP65 |
| Warranty | 5 Years |
| Dimensions (L × W × H) | 20.6 × 10.6 × 8.7 in |
| Certifications | UN 38.3, MSDS |
| Industry-leading cycle life (80% DoD) | LITE 4,000+; ALPHA 3 5,000+. |
| Bluetooth Monitoring (ALPHA 3 only) | Track SOC, voltage, current, |
| Max Output Power | 3,840W |
| Charge Temperature | 32°F to 131°F |
Frequently Asked Questions
Clear answers to common questions about this product, setup, compatibility, and use.