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RNGM8
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Core - 12V 300Ah Core Series Deep Cycle Lithium Iron Phosphate Battery w/Self-Heating

SKU: RBT12300LFPSH-UK
£569.99 £857.99
Tax included. Free shipping.
+ 5690   Renogy Rays after purchase. Learn more

Member Exclusive: Save 8% on £820+
valid until 2025-08-04
RNGM8
  • • 50% more power than a same-sized 200Ah LiFePO4 Battery.
  • • 2x faster self-heating triggered at 32℉ (0℃).
  • • Support series, parallel, or series-parallel connections
  • • Low-temperature cut-off for charge & discharge
  • • 5-year limited warranty & 24-hour timely assistance
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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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Description
Includes
Specs
Downloads
FAQ
Reviews

Same Lasting Power at Lighter Weight

Experience the same 2x faster self-heating to ensure safe charging below in freezing conditions–now easier to move and store with 12% reduced weight than the last generation. If you are considering expansion, do choose the battery of the same generation to complete your setup.

Take a Closer Look

300Ah Core vs. Lead-acid

Upgrade to lithium for next-level performance.

300Ah Core vs. Other LiFePO4

Unparalleled performance to meet your most demanding energy needs.

More Power, More Possibilities.

The Renogy 12V 300Ah Core delivers 59% more power than a 200Ah LiFePO4 battery of the same size. Get the extra capacity you need to weather unexpected storms, hurricanes, wildfires, and other challenges whenever they come your way.

Powerful to the Core.

With consistent power lasting nearly 10 times longer than a typical lead-acid battery, the Renogy 12V 300Ah Core LiFePO4 Battery is built with EV-grade cells for lasting performance.

Extra Warmth. Extended Runtime.

With the industry’s highest 200W heating elements, the 12V 300Ah LiFePO4 Battery heats up 2X faster than other heated batteries. Ensure a stable charge current greater than 10A for each battery to activate the self-heating function.

Protections Against Bumps.

We know the journey can be a bumpy one. That’s why the battery is designed with rugged structural elements to protect components from shocks and impacts along the way.

Connect in Parallel
Connect in Series
Connect in Series-Parallel

Power Your Journey Longer

Whether you’re a weekend adventurer or a full-time nomad, Renogy Core 300Ah LiFePO4 batteries provide easy power access on the road. Connect 4 batteries in parallel to power essential RV appliances for up to 5.5 days, offering days of off-grid power for added comfort.

Power Your Cabin Getaway

Experience uninterrupted power in your cabin retreat with our 12V 300Ah Core Batteries. Connect 4 batteries in series to power the devices in your cabin, including air conditioning, refrigerators, and more, for up to 4.5 days. Spend less time on maintenance and more time enjoying the comforts of your cabin getaway.

Uncompromising modern convenience on the waves

You're just a step away from transforming your fishing boat into a haven of modern comfort. Renogy 12V 300Ah Core batteries can be connected in 4P4S—16 batteries in series and parallel—to power the devices on your boat for up to 5 days.

Dimensional Reference Guide

Before installation, ensure you leave 1.97-3.94 inches (50-100 mm) above the battery and at least 7.87 inches (200 mm) of clearance on the side with busbars for proper setup.

What's in the box

The Renogy Difference

Going solar doesn’t have to be complicated. Renogy is here to help you build your system quickly so you can explore further..

10+ Years' Expertise in Off-Grid Power Solutions

Local Warehouses in the UK

5-Year Warranty

24-Hour Prompt Response

Package Includes

12V 300Ah Lithium Iron Phosphate Battery

  • Core - 12V 300Ah Lithium Iron Phosphate Battery x1
  • Long Terminal Bolts x 2
  • Insulating Sleeve x 2
  • User Manual x 1

Core - 12V 300Ah Lithium Iron Phosphate Battery

x 1

Long Terminal Bolts

x 2

Insulating Sleeve

x 2

User Manual

x 1

Specification

12V 300Ah Core Series Deep Cycle Lithium Iron Phosphate Battery

Rated Capacity (0.5C, 25°C)
300Ah
Nominal Voltage
12.8V
Energy
3840Wh
Cycle Life (0.5C/1C, 25℃)
5000 Cycles (80% DOD, 80% EOL)
Charge Voltage
14.4V
Maximum Continuous Charge Current
200A
Maximum Continuous Discharge Current
200A
Peak Discharge Current
390A@5s
Charge Temperature Range
-4°F to 131°F / -20°C to 55°C
Discharge Temperature Range
-4°F to 140°F / -20°C to 60°C
Storage Temperature Range
-13°F to 149°F / -25°C to 65°C
Operation Relative Humidity
10% to 95%
Dimension (L x W x H)
20.55 x 9.45 x 8.62 in / 522 x 240 x 219 mm
Weight
60.63 lbs. / 27.5 kg
Terminal Bolt Size
M8 x 1.25 x 15 mm
Protection Rating
IP65

Warranty

Material and Workmanship Warranty
5-year material warranty
Certifications
MSDS, UN38.3, FCC, PSE, CE, UKCA

Downloads

Warranty

Download

Manual Book

Download

FAQ

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

Yes, your 4 Renogy 100W 12V solar panels will work with the LiFePO4 battery. However, make sure that your solar charge controller can handle the total wattage output from the panels. Never connect solar panels directly to the battery without using a solar charge controller to protect both the battery and the panels. Contact us if you need help sizing 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 Series Batteries can be connected in series to increase the voltage to 24V, 36V, or 48V for an off-grid power system. For maximum power output, you can first wire the batteries in series, then connect the sets of batteries in parallel (using the same model of batteries) to achieve up to 40.96kWh.

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

You can connect up to 4 Renogy 12V 300Ah Core Series Batteries in series, up to 4 batteries in parallel, or up to 16 in a series-parallel connection. Ensure all batteries are the same model and capacity for proper performance.

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

Renogy 12V 300Ah Core Series Batteries can last up to 5000 cycles with an 80% depth of discharge (DOD). These batteries are designed with a 200A Battery Management System (BMS), IP65 protection, and a rugged structure, providing durable and reliable performance for years to come.

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

No, this battery is not compatible with a Bluetooth module. However, you can use a 500A Battery Monitor with Shunt (sold separately) to keep track of the battery status and ensure optimal operation.

6. How do I recharge my LiFePO4 batteries?

You can recharge your LiFePO4 batteries using solar power, a DC-DC battery charger, or an AC-DC charger. We recommend using a solar charge controller/charger that is specifically designed to be compatible with lithium iron phosphate batteries for safe and efficient charging.

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