Early Black Friday Price Drop Guarantee
Found the same price or less? Just ask & we'll beat it.
The Rich Solar 12V 20Ah LiFePO4 Battery (model RS-B1220) is a compact 12.8V lithium iron phosphate battery with 256Wh of nominal energy and a rated life of 3,000+ cycles. It measures 7.1 x 3.1 x 6.5 inches and weighs 4.6 pounds, so it fits small spaces and is easy to carry.
Rich Solar designs it for RVs, marine systems, off-grid cabins, camping and backup power. A built-in battery management system (BMS) guards against overcharge, over-discharge, over-current, short circuits and charging in the cold, and Rich Solar backs it with a 5-year limited warranty.
Rated at 12.8V and 20Ah, the battery stores 256Wh. Monthly self-discharge is 5% or less, so a charged battery holds its energy well between uses. The LiFePO4 chemistry is maintenance-free.
Rich Solar rates the RS-B1220 for more than 3,000 charge cycles and builds it with Grade A+ LiFePO4 cells. A long cycle life means fewer replacements over the years you use it.
The BMS covers over-charge and over-discharge, charge and discharge over-current, and short circuits. It also protects against charging or discharging at unsafe high or low temperatures, guards its internal FETs against overheating and balances the cells passively.
Charge it with a CC/CV charger. Rich Solar recommends 14.2V and sets the maximum at 14.4V. The recommended charge current is 10A and the maximum is 20A. The battery supplies up to 30A of continuous discharge current, with a discharge cutoff of 10.0V.
The housing is UL94 V-0 flame-retardant plastic. The M6 terminals take a torque of 53.1 to 57.5 lbf·in, and Rich Solar includes stainless steel screws in three lengths, red and black nut covers and a pair of short 10 AWG power cables. Rich Solar lists UL 1642, CE and UN 38.3 for this battery.
Connect up to four RS-B1220 batteries in parallel (4P) to add capacity while your system stays at 12V. Start small and add batteries as your needs grow.
RVs and campers. A light 12V battery for small DC loads that fits into a tight compartment.
Boats. Rich Solar lists marine systems among its uses. Mount it where it stays out of standing water, since the battery label warns against submerging it.
Camping. At 4.6 pounds, it's easy to carry to a campsite for small 12V loads.
Off-grid cabins and backup power. Use one battery for a small solar or backup circuit, or connect up to four in parallel for more capacity.
Sealed lead-acid batteries are a common choice in this size class. The RS-B1220 instead uses maintenance-free LiFePO4 cells rated for 3,000+ cycles, weighs 4.6 pounds and has a BMS that manages charge, discharge and temperature limits. If you switch over, make sure your charger has a lithium or LiFePO4 setting that stays within 14.4V.
A larger 12V battery stores more energy but takes more space and weight. The RS-B1220 suits small loads where space is tight. If you need more than 256Wh, connect up to four in parallel. If your loads draw more than 30A continuously, choose a larger battery.
The battery ships at about 40% charge, and Rich Solar asks you to charge it fully before first use. Use an approved CC/CV charger set no higher than 14.4V, with 14.2V recommended, and keep the charge current at 20A or less. Charge only between 32°F and 131°F. The battery has no internal heater, and its BMS protects it from charging when it's too cold.
If the battery will sit unused for more than two weeks, Rich Solar recommends holding it at 60 to 80% state of charge and checking it at least once a month. Disconnect all loads if it will be stored for more than a month, and recharge to at least 60% after each use. For storage longer than three months, keep it between 32°F and 113°F.
No. The charging range is 32°F to 131°F, and the battery has no internal heater. Its BMS includes low-temperature charging protection. It can discharge from -4°F to 140°F.
No. This model has no Bluetooth connection, so use a separate battery monitor if you want to track state of charge.
Up to four in parallel (4P). Rich Solar doesn't list a series rating for this model, so check with our team before you plan a series connection.
Rich Solar backs the RS-B1220 with a 5-year limited warranty.
The Rich Solar 12V 20Ah LiFePO4 Battery gives small 12V systems 256Wh of maintenance-free storage, a 3,000+ cycle rating and multi-level BMS protection in a 4.6 pound case. If you'd like help matching it to your charger or loads, the Outbound Power team is happy to help.
Rich Solar 12V 20Ah LiFePO4 Battery Specifications |
|
|---|---|
| Model | RS-B1220 |
| Battery | |
| Nominal Voltage | 12.8V |
| Rated Capacity | 20Ah |
| Nominal Energy | 256Wh |
| Cell Chemistry | LiFePO4 |
| Cycle Life | 3,000+ cycles |
| Monthly Self-Discharge | 5% or less |
| Parallel Connection | Up to 4 units (4P) |
| Charge and Discharge | |
| Charging Method | CC/CV |
| Recommended Charge Voltage | 14.2V |
| Maximum Charge Voltage | 14.4V |
| Discharge Cutoff Voltage | 10.0V |
| Recommended Charge Current | 10A |
| Maximum Charge Current | 20A |
| Maximum Continuous Discharge Current | 30A |
| Charge Temperature | 32°F to 131°F |
| Discharge Temperature | -4°F to 140°F |
| Storage Temperature (Under 1 Month) | 32°F to 131°F, 90% RH max |
| Storage Temperature (Over 3 Months) | 32°F to 113°F, 90% RH max |
| Features | |
| Voltage Protection | Over-charge and over-discharge |
| Current Protection | Charge and discharge over-current, short circuit |
| Temperature Protection | High/low temperature charging and discharging, internal FET over-temperature |
| Low-Temperature Charging Protection | Yes |
| Cell Balancing | Passive |
| Bluetooth | No |
| Internal Heating | No |
| Physical | |
| Terminals | M6 |
| Terminal Torque | 53.1-57.5 lbf·in |
| Housing | UL94 V-0 flame-retardant plastic |
| Dimensions (L x W x H) | 7.1 x 3.1 x 6.5 in |
| Net Weight | 4.6 lb |
| Package Dimensions | 10 x 6 x 10 in |
| Gross Weight | 7 lb |
| Certifications and Warranty | |
| Certifications | UL 1642, CE, UN 38.3 |
| Warranty | 5-year limited warranty |
Yes! Outbound Power is an Authorized Dealer for every single brand and product on our store.
Shipping times vary depending on your location and the product or products ordered.
Order Processing Time
Most products are processed within 1-3 business days. If there is a delay in processing your order, we will alert you with as much information as possible about what to expect.
After order processing is complete, you will receive tracking information to monitor your order while it is in transit.
Order Shipping Time
Following processing, it may take between 3 and 8 days to arrive, depending on your location.
Please refer to the product page for your item and reference the estimated delivery time frame for more details.
Additionally, you can see the estimated delivery time frame during checkout and receive a tracking number once your order ships.
Everything on our store ships for free. Really!
Most items may be returned within 30 days of delivery. Please refer to our Returns & Exchanges policy to determine what items are eligible. Returns are not accepted beyond 30 days following delivery.
Everything sold on our website is brand-new.
No — we price BEAT! Please refer to our Price Beat Promise for full details.
Click to apply at checkout
placeholder
