Description: The Lion UT™ 3500 HTR is Lion Energy's most powerful lithium battery — delivering nearly 3x the capacity of the standard UT 1300 in roughly the same footprint as two standard batteries. Built with safe, long-lasting Lithium Iron Phosphate (LiFePO4) cells and a built-in internal heater, it performs reliably year-round including in cold climates. Ideal for solar energy banks, RVs, cabins, marine systems, and emergency backup power.
Key Features:
- 280Ah capacity (3,584Wh) — nearly 3x the power of a UT 1300 BT-H
- 24% lower cost per amp-hour compared to three UT 1300 BT-H batteries
- Built-in internal heater — maintains optimal battery temperature in freezing conditions
- 12.8V LiFePO4 technology — the safest lithium chemistry available
- Bluetooth monitoring — track charge status, health, and real-time usage via the Lion Energy Smart App
- 100% usable capacity — unlike lead-acid which gives only 50%
- Battery Management System (BMS) — protects against overcharge, over-discharge, and short circuit
- Expandable — connect up to 4 in parallel (1,120Ah) or series up to 48V
- Continuous discharge: 150A / Peak: 280A
- Recommended charger: Savanna BC 45 (45A) — fully charges in ~6 hours
- Limited Lifetime Warranty
- Zero emissions — safe for indoor use
"⚠️ Shipping Notice: This item requires freight shipping and must be ordered separately from other Lion Energy products. Freight cost will be calculated at checkout."