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RNGM8
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Core Mini - 12.8V 300Ah Lithium Iron Phosphate Battery

SKU: RBT12300LFP-M-RBM-UK
£539.99 £689.99
Tax included. Free shipping.
+ 5390   Renogy Rays after purchase. Learn more

Member Exclusive: Save 8% on £820+
valid until 2025-08-04
RNGM8
  • • Weighs just 25 kg, 57% lighter than the 12V 200Ah lead-acid battery.
  • • Low-temperature protection (charging: <0°C, discharging: < -20°C ).
  • • Compact design, 31% smaller than other 12V 300Ah LFP batteries.
  • • Grade-A prismatic LiFePO4 cells deliver 5000+ cycles at 80% depth of discharge (DOD).
  • • 3840Wh capacity, maximum 4P4S configuration, expandable to 61.44kWh.
  • • 5-year warranty. Certified by FCC, CE, ROHS, UKCA, and more.
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Return & refund policy

What is Renogy's Return Policy?

Return within 30 Days

You may return your product(s) to Renogy within 30 days of delivery. The item(s) must be in the original packaging, be unused, undamaged, and unmodified. A refund will be issued after the returned item is inspected by Renogy.

Start a Member ReturnStart a Guest Return

Renogy will pay for the return shipping label for items that fall within the following categories:

  • Carrier damage/ warehouse mishandling
  • Defective product
  • Incorrect product was delivered
  • Additional product(s) you did not order were delivered

For any other reason not listed, customers are responsible for any return shipping fees. Renogy will NOT accept returns with any modifications to the product as it voids our warranty. Any modified products returned to Renogy will be shipped back to you at your own expense.

Return after 30 Days

Return requests outside of 30 days require special authorization. You can submit a case through our online portal to request a late return.

Submit a Case

FAQs

Can I exchange my Renogy order?

Renogy does not offer exchanges. If you purchase the wrong item by mistake, you will need return the item and place a separate order for the correct one. The return shipping expenses shall be borne by you.

Where is my refund?

Once we have confirmed that the return requirements are met, we will issue a full refund within 2-5 business days. Actual deposit times may vary according to your banking institution. Additionally, an email notification will be sent out when the refund is issued.

What about defective or faulty items?

We stand behind all of our products. If the item(s) you received is defective or flawed in any way, please submit a case  on our online portal and describe the issue you are encountering.

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Click here to view the full content of Return & Refund Policy.

Description
Includes
Specs
Downloads
FAQ
Reviews

High Capacity. Light weight. Mini Sized.

You won't find a lighter 12V 300Ah Lithium Battery anywhere. With its ultralightweight, compact design, and low-temperature cut-off, this battery is perfect for both travel and home use.

Lighter Than Ever, Easier to Carry.

At only 55.1 lb/25 kg, this battery is easy for one person to carry. That's 9 lb/4 kg lighter than its counterparts! Its lightweight, compact design makes handling and installation hassle-free.

Space-Saving Design
Simplified Power

31% Smaller Than Its Counterparts

This battery's compact and sleek design saves space, provides more room for easier connections and maintenance. and fits in various battery boxes, including 8D and 4D sizes.

Simple. Powerful. Hassle-free.

One 12v 300Ah Battery is three times more powerful than the old three-battery setup. Two simple cable connections saves time, money, and stress. Plus, one battery eliminates cell imbalance issues.

Cold Weather Charging Protection

The built-in BMS with low-temperature cut-off means you don’t have to monitor your lithium battery, manually shutting it down. Stay relaxed and cozy during winter travels while your battery handles itself, letting you focus on the adventure.

RV
Boat

Power Your RV Adventure

Two batteries provide 7680Wh of power. That's enough to run your fridge, microwave, coffee maker, and A/C unit for 24hrs+

Power Your Marine Adventure

Two batteries provides 7680Wh of power. That's enough to run your navigation, heating, lighting, and onboard essentials for 24hrs+

Up to 61.44kWh to Power any Adventure

Customize your power setup to fit your needs. Connect four batteries in series, four in parallel, or a mix of both to create a tailored power backup.

Package Includes

Core Mini - 12.8V 300Ah Lithium Iron Phosphate Battery

x 1

Long Terminal Bolts (M8 x 1.25 x 16 mm)

x 2

Terminal Bolts (M8 x 1.25 x 12 mm)

x 2

User Manual

x 1

Core Mini - 12.8V 300Ah Lithium Iron Phosphate Battery

Electrical Specifications

Rated Capacity (0.5C, 25°C): 300AH
Nominal Voltage: 12.8V
Dimension (L x W x H): 384 x 194 x 253 mm (15.12 x 7.64 x 9.96 in)
Weight: 25.0 kg / 55.1 lbs
Terminal Bolt Size : M8 × 1.25 × 12 mm & M8 × 1.25 × 16 mm
Energy: 3840Wh
Cycle Life (0.5C, 25℃): 5000 Cycles (80% DOD, 80% EOL)
Storage Temperature Range: -4°F to 140°F (-20°C to 60°C)
Charge Temperature: 32°F to 140°F (0°C to 60°C)
Discharge Temperature: -4°F to 149°F (-20°C to 65°C)
Operation Relative Humidity: 5% to 95%
Protection Rating: IP65
Charge Voltage: 10V to 14.8V
Maximum Continuous Charge Current: 150A
Maximum Continuous Discharge Current: 200A
Peak Discharge Current: 380A @ 10s
MSDS, UN38.3, FCC, CE, PSE, RCM, RoHS and UKCA: YES
Warranty: 5-year material warranty

Resources Download

User Manual

Download

Warranty

Download

Frequently Asked Questions

1. I have 4 Renogy 100W 12V solar panels. Will these work with this LiFePO4 battery or is that too much wattage?

Yes, but please make sure that your solar charge controller is capable of handling the power your solar panels can output. Do not connect solar panels directly to batteries without a solar charge controller. Feel free to contact us if you have questions about how to size the solar charge controller for your system.

2. Can this battery be used in series to build a 48-volt system？

Yes. Renogy 12V Core Mini Series Batteries can be connected in series to ramp up voltage for a 24V, 36V, or 48V off-grid power system. You can also consider wiring batteries in series first and then wire sets of batteries (same models required) in parallel for maximum power up to 61.44kWh.

3. How many Renogy 12V 300Ah Core Mini Series Batteries can I connect at most?

The Core Mini Series batteries support versatile connections, including series, parallel, and series-parallel connection. You can connect up to 4 batteries in series, 4 in parallel, or 16 in the series-parallel connection. Batteries of the same model and similar capacity are required.

4. How long will the Renogy Core Mini Series Lithium Iron Phosphate Battery last?

Renogy 12V 300Ah Core Mini Batteries are capable of delivering 5000 cycles with a recommended 80% depth of discharge (DOD). Meanwhile, these batteries combine a true 200A battery management system (BMS), IP65 protection, and rugged structural design to brace for challenges wherever you go.

5. Can I pair a Bluetooth Module for this battery to monitor the battery status on the phone?

No. This battery is not compatible with the Bluetooth module. You can use a 500A Battery Monitor With Shunt (sold separately) to keep track of battery status.

6. How to recharge my LiFePO4 batteries?

Whether you prefer charging batteries via solar, a DC-DC battery charger, or an AC-DC charger, we highly recommend a solar charge controller/charger that is compatible with lithium iron phosphate batteries.

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