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Lion Energy UT™ 3500 HTR - 12V Battery with Heater, 280Ah (3584Wh) LiFePO4, 12.8V Bluetooth Battery Lion Energy

Lion Energy UT™ 3500 HTR - 12V Battery with Heater, 280Ah (3584Wh) LiFePO4, 12.8V Bluetooth

BY: Lion Energy | SKU: 50170186 Availability: In Stock
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Lion Energy UT™ 3500 HTR - 12V Battery with Heater, 280Ah (3584Wh) LiFePO4, 12.8V Bluetooth

The Lion Energy UT™ 3500 HTR is a high-capacity, heated lithium battery designed to power your off-grid, mobile, and backup energy systems with ease. With an impressive 280Ah capacity, integrated Bluetooth monitoring, and internal heater, it offers optimal performance even in cold climates. It packs the energy of nearly three standard 105Ah batteries into a compact form—ideal for solar banks, RVs, cabins, or industrial use. Built with safe and long-lasting LiFePO4 technology, this battery delivers high power with low maintenance for years to come.

Lion Energy UT™ 3500 HTR - 12V Battery with Heater Features

Massive 280Ah Capacity

Store up to 3584Wh of power—equivalent to nearly three UT 1300 batteries—in a single footprint.

Integrated Internal Heater

Built-in automatic heating system keeps the battery performing in cold climates without external warmers.

Bluetooth Monitoring

Track battery health, charge status, and usage via the Lion Energy mobile app in real time.

Long-Lasting LiFePO4 Chemistry

Enjoy over 3,500 life cycles at 80% depth of discharge—safe, stable, and maintenance-free.

Compact Footprint, Higher Density

Replaces multiple batteries in one space-saving design—ideal for RV, solar, and marine setups.

24% Lower Cost per Amp-Hour

Get more capacity at a lower overall cost compared to using multiple smaller lithium batteries.

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Lion Energy UT™ 3500 HTR - 12V Battery with Heater Applications

  • Off-grid solar banks – Power entire cabins or large off-grid systems with reliable, long-lasting storage
  • RV and camper power systems – Extend run time for appliances, A/C, and electronics
  • Backup energy storage – Maintain critical power during blackouts and emergency scenarios
  • Marine and boat battery replacement – Deep cycle battery alternative that performs in harsh conditions
  • Cold climate installations – Perfect for snow-prone areas where battery warmth is crucial
  • Industrial or mobile job sites – Support high-draw tools and equipment on the go
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What's Included

Everything you need is included with your product.

  • 1 x Lion Energy UT™ 3500 HTR 12V LiFePO4 Battery
  • User Manual

Lion Energy UT™ 3500 HTR - 12V Battery with Heater Specifications

Category Specifications
Weight 72.31 lbs.
Dimensions 13.85" x 7.64" x 7.64" (L x W x H)
Amp Hours (Ah) 280
Max continuous discharge 150A
Max peak discharge 280A (50 sec)
Charge retention 1+ years
Post material Stainless steel
Warranty Lifetime

Frequently-Asked Questions

Can I use this battery in freezing conditions?

Yes. The built-in internal heater allows the battery to operate and charge safely in cold environments.

Is it compatible with solar charge controllers and inverters?

Absolutely. The UT 3500 HTR works with most 12V system components designed for LiFePO4 batteries.

Does it require any maintenance?

No. This is a sealed, maintenance-free battery with long cycle life and smart management.

How do I connect it with the app?

Simply download the Lion Energy app, enable Bluetooth, and pair your battery for instant status updates and insights.

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