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The Rich Solar ALPHA 1 12V 100Ah LiFePO4 Battery is a 12.8V lithium iron phosphate battery that stores 1,280Wh in a compact 10.2 x 6.6 x 8.3 inch case weighing about 24 pounds. It supports 100A of continuous charge and discharge current, connects up to four units in parallel, and drops into most 12V RV, marine, off-grid and backup power systems.
This listing offers four options. The ALPHA 1 Lite is the value model with 4,000+ cycles and low-temperature charging protection. The standard ALPHA 1 adds a built-in heater and Bluetooth monitoring with 5,000+ cycles. The ALPHA 1 PRO adds UL 1973 certification, 7,000+ cycles and a 10-year warranty. The 3 x ALPHA 1 Lite option is Rich Solar's 300Ah battery bank, with three Lite batteries and the cables to connect them.
Grade A LiFePO4 cells are rated for 4,000+ cycles on the Lite, 5,000+ on the ALPHA 1 and 7,000+ on the PRO. That is several times the life of a typical lead-acid battery, so the cost per cycle drops the longer you use it.
Each battery can accept and deliver 100A continuously. That is enough to run a 1,000W inverter at full load and to recharge quickly from a large charger, alternator charger or solar array.
LiFePO4 cells cannot be charged below freezing. On the ALPHA 1 and PRO, a 100W internal heater turns on below 41°F, warms the cells, and shuts off above 50°F, so the battery can keep charging on cold mornings. Below 32°F, charging stays off until the cells are warm enough. The Lite has no heater, but its BMS stops charging in the cold to protect the cells and resumes when it is safe.
The RICH SOLAR app shows state of charge, voltage, current, temperature and remaining capacity in real time. Pairing takes a quick barcode scan, and you can turn the battery on or off from your phone. The Lite does not include Bluetooth.
The battery management system guards against overcharge, over-discharge, overcurrent, short circuits and temperature extremes, and it balances the cells. The housing is UL94 V-0 flame-retardant plastic with an IP65 rating against dust and water spray.
Connect up to four identical batteries in parallel for up to 400Ah and 5,120Wh at 12V. Self-discharge is 5% or less per month, so a stored battery holds most of its charge between trips.
RVs and travel trailers. Replace a group-size lead-acid battery to run lights, the water pump, fans, a 12V fridge and an inverter for small appliances.
Boats. Power electronics, lighting and accessories. Rich Solar lists marine use as a primary application.
Vans and overland rigs. A compact, light battery that pairs with a DC-DC charger and roof solar.
Cabins and off-grid sites. Store solar power for lights, communications and small loads, and add batteries as needs grow.
Home backup. Keep a modem, router, CPAP or sump monitor running through outages with a small inverter.
Versus lead-acid or AGM batteries. A 100Ah AGM battery weighs around 60 pounds and should only be discharged to about half its capacity. The ALPHA 1 weighs about 24 pounds, uses most of its rated capacity, and lasts thousands of cycles longer.
Lite versus ALPHA 1. Choose the Lite for warm climates or indoor installs where charging below freezing is not a concern. Choose the ALPHA 1 when the battery lives in a cold RV bay or boat locker, or when you want app monitoring.
ALPHA 1 versus PRO. Both have the heater and Bluetooth. The PRO adds UL 1973 and FCC certification, a 7,000+ cycle rating and a 10-year warranty, double the 5 years on the other models.
This may be a good fit if
Rich Solar specifies parallel connection of up to four units. For a higher-voltage bank, choose a battery built for that voltage, such as the 24V ALPHA 4.
The 100W heater only runs when the cells are cold and charging power is present. It turns on below 41°F and off above 50°F.
Use a converter or charger with a LiFePO4 setting that charges at 14.4V. Many older converters use lead-acid settings and will not fully charge a lithium battery.
It is Rich Solar's 300Ah, 3.84kWh battery bank. It includes three ALPHA 1 Lite batteries and four 1 ft 2 AWG cables for wiring them in parallel.
The Rich Solar ALPHA 1 12V 100Ah LiFePO4 Battery gives you a lighter, longer-lasting 12V battery with a choice of features for your climate and budget. At Outbound Power, we help customers match batteries to their inverters, chargers and solar panels. If you have questions about which ALPHA 1 is right for you, our team is happy to help.
Rich Solar ALPHA 1 12V 100Ah LiFePO4 Battery Specifications |
|
|---|---|
| Shared Specifications | |
| Cell Chemistry | LiFePO4 (lithium iron phosphate) |
| Nominal Voltage | 12.8V |
| Rated Capacity | 100Ah per battery |
| Nominal Energy | 1,280Wh per battery |
| Charge Voltage | 14.4V ± 0.2V |
| Maximum Charge Current | 100A |
| Maximum Continuous Discharge Current | 100A |
| Parallel Expansion | Up to 4 batteries (4P) |
| Charge Temperature | 32°F to 131°F (0°C to 55°C) |
| Discharge Temperature | -4°F to 140°F (-20°C to 60°C) |
| Protection Rating | IP65 |
| Housing | UL94 V-0 flame-retardant plastic |
| BMS Protection | Overcharge, over-discharge, overcurrent, short circuit, temperature, cell balancing |
| Dimensions | 10.2 x 6.6 x 8.3 in |
| Weight | About 24 lbs per battery |
| ALPHA 1 Lite (RS-B121SL) | |
| Cycle Life | 4,000+ cycles |
| Internal Heater | No (low-temperature charging protection) |
| Bluetooth | No |
| Certifications | UN 38.3, MSDS |
| Warranty | 5 years |
| ALPHA 1 (RS-B121S) | |
| Cycle Life | 5,000+ cycles |
| Internal Heater | Yes, 100W (on below 41°F, off above 50°F) |
| Bluetooth | Yes, RICH SOLAR app |
| Certifications | UN 38.3, MSDS |
| Warranty | 5 years |
| ALPHA 1 PRO (RS-B121SP) | |
| Cycle Life | 7,000+ cycles |
| Internal Heater | Yes, 100W (on below 41°F, off above 50°F) |
| Bluetooth | Yes, RICH SOLAR app |
| Certifications | UL 1973, FCC, UN 38.3, MSDS |
| Warranty | 10 years |
| 3 x ALPHA 1 Lite Battery Bank (RS-B121SLx3) | |
| Bank Capacity | 300Ah at 12V (3 batteries in parallel) |
| Bank Energy | 3,840Wh |
| Included Cables | 4 x 1 ft 2 AWG |
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