
RELiON | RB300-LT, Low Temperature LIFEPO4 Legacy Lithium Battery 8D 12V, Not Series Capable, 12.8V, 300 Amp Hour
RB300-LT, Low Temperature LiFePO4 Legacy Lithium Battery 8D 12V, Not Series Capable, 12.8V, 300 Amp Hour
Power through extreme conditions with the RB300-LT, Low Temperature LiFePO4 Legacy Lithium Battery 8D 12V, Not Series Capable, 12.8V, 300 Amp Hour—engineered specifically for reliable energy storage in cold climates. As part of RELiON’s Low-Temperature Series, this 12V, 300Ah lithium iron phosphate (LiFePO4) battery features advanced internal heating technology that allows safe charging in sub-zero temperatures, as low as -20°C (-4°F), without the need for external heating elements.
Built with high-capacity cells and proprietary low-temp performance, this battery is ideal for winter-dependent off-grid systems, RVs, and marine applications where dependable cold-weather operation is critical.
Key Features:
-
Cold-Weather Ready – Charges safely in environments as cold as -20°C (-4°F)
-
Self-Heating Technology – Internal system draws from charger to heat cells to 5°C (41°F) for full-speed charging
-
No Heating Blankets Needed – Integrated solution means no extra components or installations
-
Consistent Power Delivery – Maintains full performance and stability even in freezing temperatures
-
300Ah Capacity – Delivers long runtimes and high-capacity energy storage in a single unit
-
Maintenance-Free – No corrosion, no water top-ups—just plug in and go
Are Solar Guys Pro Authorized Retailers?
Yes! We are proud to be one of the few online retailers who are authorized retailers for every single product we carry!
When Will My Order Ship?
Most orders ship within 1–3 business days. You’ll get a tracking number as soon as it ships via email!
Do We Accept Returns?
Yes absolutely, we have a no-hassle, 30-day return policy on all items! To refer to the full policy, click HERE
Are Products Brand New?
Yes! All products on Solar Guys Pro are 100% brand-new and in perfect condition.
We do not sell any used or refurbished items.

Orders over $500 include a FREE (Normally $149.99) 80-Page DIY Solar eBook — added automatically at checkout.
Frequently Asked Questions

Get your 30% Tax Solar Credit!
Unlock substantial savings with the government's Solar Tax Credit, which offers a robust 30% deduction on the installation costs of solar systems. This attractive incentive is your ticket to leveraging solar energy's eco-friendly potential while enjoying the financial benefits.
At Solar Guys Pro, our commitment is to you. Please be reminded that our expertise does not extend to tax advice. Nonetheless, our dedicated staff is eager to guide you through the process and ensure you capitalize on this exceptional offer.
Contact us now to learn more!