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LG Chem RESU6.5 48V Residential ESS
Rated 6.5kWh Total Energy
LG Chem Model Number RESU6.5
Total Energy 6.5kWh
Usable Energy 5.9kWh
Capacity 126Ah
Nominal Voltage 51.8V
Voltage Range 42.0-58.8V
Enclosure Protection Rating IP55
Dimensions 17.8" x 25.8" x 4.7"
Weight 114.6 lb.

LG Chem RESU6.5 Residential ESS

LG Chem

LG Chem RESU6.5 Residential ESS

Information purposes only. Item not available at this time.
Available only from Authorized LG Chem Distributors.

LG Chem RESU residential solar energy storage system

A RESU6.5 ESS can store surplus energy generated from rooftop solar panels for use when needed. When the sun has set, energy demand is high, or there is a black-out, you can use the energy stored in your ESS to meet your energy needs at no extra cost. Unlike a grid-tied solar system which automatically switches off, a battery storage system allows you to keep generating and consuming energy when the grid goes down. In addition, an ESS helps you pursue the goal of energy self-consumption and ultimately energy-independence.

Compact Size & Easy Installation

The compact and lightweight nature of the RESU is world-class. It is designed to allow easy wall-mounted or floor-standing installation for both indoor and outdoor applications. The inverter connections have also been simplified, reducing installation time and costs.

Powerful Performance

The RESU6.5 features a continuous power output of 5.9kWh and a DC round-trip
efficiency of 95%. LG Chem’s L&S (Lamination & Stacking) technology provides durability ensuring 80% of capacity retention after 10 years.


RESU Plus Option for Expandibility

RESU Plus is an expansion kit specially designed for 48V models of the latest RESU series to allow up to 2 battery units. With the RESU Plus, all 48V models can be “cross-connected” with another 48V unit of any capacity. This allows the RESU 6.5 to offer energy storage capacities from 6.5kWh to 16.3kWh.

RESU6.5 Benefits

ESS battery cell
Lithium-polymer energy cells are used in the submodules for long duration energy storage.

RESU battery pack
The ESS Pack is composed of submodules, BMS and BMU.

Electricity Bill Saving

• Charge during off-peak times.
• Discharge during peak times.


• Store solar energy generated from your solar panels for future use.

Emergency Power Backup

• Discharge during a blackout, functioning as back-up power.

SGIP Program

Residential ESS customers may be able to take advantage of the California Self-Generation Incentive Program (SGIP). The SGIP provides incentives for residential behind-the-meter energy storage systems up to 10kW.

EES Award Winner

LG Chem RESU Warranty

Term of Performance Warranty

10 years from the date of purchase.

Warranty of Performance

LGC warrants that the battery retains at least 80% of Nominal Energy for 7 years after the date of invoice and at least 60% of Nominal Energy for 10 years after under proper conditions of the use during the Term of Performance Warranty. Please contact us for details.

RESU 6.5 Certifications

LG Chem places the highest priority on safety and utilizes the same technology for its ESS products that has a proven safety record in its automotive battery. All products are fully certified in relevant global standards.

RESU certifications

Contact us toll-free: (877) 297-0014

Read more about LG Chem RESU ESS Energy Storage Battery Systems.

LG Chem RESU ESS energy storage battery systems available at low wholesale prices.

Contact us toll-free: (877) 297-0014


Contractor Discounts Available


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