ESP-5K HL Battery Pack | 5 kWh DC Battery

Reliable, Scalable, and Built for the Future

Power your home with confidence using the ESP-5K HL Battery Pack, a high-efficiency 5 kWh DC battery engineered for residential energy storage. Designed by EndurEnergy with EverSure lithium iron phosphate (LFP) cells, this battery delivers unmatched safety, performance, and lifespan—backed by a 10-year warranty and 24/7 U.S.-based technical support.

Whether you're upgrading your off-grid setup or creating a full backup solution, this battery offers robust performance with 6000+ cycles, 97% round-trip efficiency, and seamless integration with Sol-Ark inverters for an advanced, all-in-one energy system.

Key Features

• Battery Model: ESP-5K HL

• Nominal Energy: 5 kWh

• Peak Power Output: 5 kW (3 seconds)

• Battery Chemistry: Lithium Iron Phosphate (LFP)

• Nominal Voltage: 51.2V

• Max Discharge Current: 60 A

• Recommended Depth of Discharge: 90%

• Efficiency: 97% round-trip

• Scalability: Up to 640 kWh per system (8 strings of 16 packs each)

Specifications

• Model: ESP-5K HL
• Nominal Voltage: 51.2 V 
• Working Voltage : 48 V - 57.6 V 
• Nominal Battery Energy : 5 kWh 
• Peak Power : 5 kW 3s 
• Max. Battery Bank Size : 80 kWh per string (16 packs per string) 
• Max. Battery System Capacity : 640 kWh per system (8 strings with 16 packs each) 
• Recommended C rate : 0.5 C 
• Max. Charge & Discharge Current : 60 A 
• Round Trip Efficiency : 97% 
• Recommended DoD : 90% 
• Charge Temperature Range : 32 °F to 122 °F (0 °C to 50 °C) 
• Discharge Temperature Range : 14 °F to 131°F (-10 °C to 55 °C) 
• Life Cycles : 6000 
• Protection Level : IP20 
• Size L x W x H: 17.40 x 19.70 x 5.24 in (442 x 500 x 133 mm) 
• Weight : 101.413 lb (46.00 kg) 
• Battery Type : Lithium Iron Phosphate (LFP) 
• Warranty : 10-Year 
• Compliance : UL1973 certified. UL9540, UL9540A, CEC and SGIP pending