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DescriptionExplore Our Battery Collection
Shop 12V, 36V and 48V LiFePO4 battery options for RV, solar, marine, off-grid and compatible golf cart applications.
12V 100Ah Batteries12V 200Ah Batteries12V 300Ah Batteries36V 100Ah Batteries48V 100Ah BatteriesPOERUNI 12.8V 300Ah LiFePO4 Lithium Battery
Upgrade your power system with the POERUNI 12.8V 300Ah LiFePO4 Deep Cycle Battery.
With 300Ah capacity and 3840Wh energy, this lithium battery provides reliable and long-lasting power for RV, Marine, Solar Energy Storage, Trolling Motors, Camping, and Off-Grid Applications.
Built with LiFePO4 cells, a 100A Battery Management System (BMS), and UL Testing Certificate, this battery delivers excellent safety, stable performance, and a much longer lifespan compared with traditional lead-acid batteries.
🔋 3840Wh Large Capacity LiFePO4 Battery
The POERUNI 12.8V 300Ah lithium battery provides:
- Nominal Voltage: 12.8V
- Capacity: 300Ah
- Energy: 3840Wh
The high energy density design provides more usable power while maintaining a compact size.
Compared with traditional lead-acid batteries, LiFePO4 technology offers:
- Longer service life
- Higher energy efficiency
- Lower maintenance requirements
- More stable performance
🛡️ UL Tested Safety & Built-In 100A BMS Protection
Safety is one of the most important features of a lithium battery.
The built-in 100A Battery Management System (BMS) continuously monitors battery operation and provides protection against:
- Over Charge
- Over Discharge
- Over Current
- Short Circuit
- High Temperature
- Low Temperature Charging
This battery has passed UL testing certification, providing enhanced safety and reliability for everyday energy storage applications.
⚡ Up to 15,000 Deep Cycles
Designed for long-term deep-cycle use, the POERUNI LiFePO4 battery provides:
- 4000 Cycles @ 100% DOD
- 6000 Cycles @ 80% DOD
- 15000 Cycles @ 60% DOD
LiFePO4 chemistry provides significantly longer cycle performance than traditional lead-acid batteries, making it an excellent choice for frequently used power systems.
❄️ Low Temperature Charging Protection
The battery features built-in Low Temperature Charging Protection to help protect LiFePO4 cells in cold environments.
When charging conditions reach unsafe low temperatures, the BMS automatically stops charging to protect the battery.
Charging automatically recovers when the battery temperature reaches approximately:
5°C / 41°F
🚐 Wide Application for 12V Deep Cycle Systems
The POERUNI 12V 300Ah LiFePO4 battery is designed for:
✅ RV & Camper Power Systems
✅ Marine Applications
✅ Trolling Motors
✅ Solar Energy Storage
✅ Off-Grid Power Systems
✅ Camping Power Solutions
✅ Backup Power Systems
Marine Use: YesStarting Battery: No
Important: This battery is designed for deep-cycle energy storage applications and is not intended for engine starting.
🔋 Flexible Series & Parallel Expansion
The battery supports series and parallel connections for larger energy systems.
Create expanded battery banks for different power requirements.
Recommended:
- Use batteries of the same model
- Use batteries with the same voltage and capacity
- Ensure batteries have similar charging status before connection
📏 Lightweight & Easy Installation
The POERUNI 12V 300Ah LiFePO4 battery weighs only:
57.63 lbs
Dimensions:
20.3 × 8.6 × 9.3 inch
The compact design makes installation easier for RVs, boats, solar systems, and off-grid applications.
📊 Product TypeLiFePO4 Deep Cycle BatteryChemical CompositionLithium Iron Phosphate (LiFePO4)Nominal TypeLiFePO4 CellsUL CertificationYesCycle LifeUp to 15000 CyclesBMS & Electrical PerformanceSpecificationDetailsBMS Rating100AMaximum Continuous Charge Current50ARecommended Charge Current50AMaximum Continuous Discharge Current100APeak Discharge Current180A / 3 SecondsCharge Voltage14.4V-14.6VCut-off Voltage10VCharge MethodCC/CVTemperature ProtectionSpecificationDetailsCharge Temperature0°C to 45°C / 32°F to 113°FDischarge Temperature-20°C to 60°C / -4°F to 140°FLow Temperature ProtectionYesAuto Recovery Temperature5°C / 41°FPhysical × 8.6 × 9.3 inchWeight57.63 lbsTerminal TypeM8Housing MaterialABSProtection RatingIP65📦 Package Includes
- 1 × POERUNI 12.8V 300Ah LiFePO4 Battery
- 2 Pairs × Terminal Screws
- 1 × Product Manual
Battery charger is NOT included.
⚠️ Important Notes
- Use a compatible LiFePO4 battery charger.
- Confirm battery size, voltage, and terminal requirements before purchase.
- Do not use this battery as an engine starting battery.
- Follow the product manual for installation, charging, and storage instructions.
- Payment
- Shipping
- Terms
- Returns
- Contact Us
1.We accept payment by .2.We only post the item to your shipping address, Please make sure your shipping address is correct and updated before you pay.3. We have no responsibility for shipping address provided. Due to the secure reasons. we are not allowed the address change through email.Non-Paying buyers: Serious Buyer Only! Please place offer or "Buy it now" only if you agree the price and terms of the product and no argument after the sale end. And payment for purchases must be received within 7 business days of the sale close. We will report Non-paying buyer to .1.All items will will be sent out through USPS/FedExwithin 24 hours after payment is cleared on the working days. Your parcel tracking number will be added to your within 24 hours2. The item will be sent to your address listed in the or PayPal. Please make sure your shipping address is correct.3. Please providethe phone number (add to it on your shipping details) and detailed address with us after you pay the payment via PayPal. The phone number and detailed address is very important for expediting the delivery. Items delivery may be delayed without providing a telephone number.4. Item delivery time depends on customs, the carrier, Holidays and weather condition in your location. If you wait until estimate delivery, you haven’t received item,Please logo your local post office tracking system to check. if you haven’t view the updated shipment, Please do contact us. We are contacting to Logistics Company and look your item exact location. If we cannot find your item. We will resend or full refund money to you. We do not want to give you a bad buying experience. Please do not open case within Estimated delivery time, because it is vital important to us.5. You will be notified once the shipment has been made.6. A business day is a normal weekday. Saturdays, Sundays, and major holidays are not business days.Do not short-circuit, disassemble or puncture the battery.Do not expose to high temperature, fire or water.Keep away from metal objects to avoid short circuit.Keep out of reach of infants and children.Do not use mixed old and new batteries or different types of batteries.Please dispose of waste batteries in accordance with local regulations.1. All items have checked carefully before shipping.2. We stand behind our quality products. We offer a 30 day hassle-free money back guarantee, return shipping is responsibility of the buyer unless the return is a result of our mistake (i.e., your receive the wrong item or defective). If you receive your item and it is defective or not working due to manufacturers defect, we will replace the item for you or refund. You will need to inform us through messages system after you receive your item, Please tell us the Detailed Problem and we will try our best to solve it for you.3. If within your one year warranty period your item has any problems, you may return the item for a replacement.4. If you have any questions,please feel free contact us. messages system instead of our email mailbox lest we can't receive your message!!! We will respond you as soon as possible.Payment1.We accept payment by .2.We only post the item to your shipping address, Please make sure your shipping address is correct and updated before you pay.3. We have no responsibility for shipping address provided. Due to the secure reasons. we are not allowed the address change through email.Non-Paying buyers: Serious Buyer Only! Please place offer or "Buy it now" only if you agree the price and terms of the product and no argument after the sale end. And payment for purchases must be received within 7 business days of the sale close. We will report Non-paying buyer to .Shipping1.All items will will be sent out through USPS/FedExwithin 24 hours after payment is cleared on the working days. Your parcel tracking number will be added to your within 24 hours2. The item will be sent to your address listed in the or PayPal. Please make sure your shipping address is correct.3. Please providethe phone number (add to it on your shipping details) and detailed address with us after you pay the payment via PayPal. The phone number and detailed address is very important for expediting the delivery. Items delivery may be delayed without providing a telephone number.4. Item delivery time depends on customs, the carrier, Holidays and weather condition in your location. If you wait until estimate delivery, you haven’t received item,Please logo your local post office tracking system to check. if you haven’t view the updated shipment, Please do contact us. We are contacting to Logistics Company and look your item exact location. If we cannot find your item. We will resend or full refund money to you. We do not want to give you a bad buying experience. Please do not open case within Estimated delivery time, because it is vital important to us.5. You will be notified once the shipment has been made.6. A business day is a normal weekday. Saturdays, Sundays, and major holidays are not business days.TermsDo not short-circuit, disassemble or puncture the battery.Do not expose to high temperature, fire or water.Keep away from metal objects to avoid short circuit.Keep out of reach of infants and children.Do not use mixed old and new batteries or different types of batteries.Please dispose of waste batteries in accordance with local regulations.Returns1. All items have checked carefully before shipping.2. We stand behind our quality products. We offer a 30 day hassle-free money back guarantee, return shipping is responsibility of the buyer unless the return is a result of our mistake (i.e., your receive the wrong item or defective). If you receive your item and it is defective or not working due to manufacturers defect, we will replace the item for you or refund. You will need to inform us through messages system after you receive your item, Please tell us the Detailed Problem and we will try our best to solve it for you.3. If within your one year warranty period your item has any problems, you may return the item for a replacement.4. If you have any questions,please feel free contact us.Contact Us messages system instead of our email mailbox lest we can't receive your message!!! We will respond you as soon as possible.powered by
