RESU LG Chem Energy Storage System can store surplus energy generated from rooftop photovoltaic panels for use when needed, and increase your energy self-consumption percentage.

A battery or Energy Storage System (ESS) can store surplus energy generated from rooftop photovoltaic 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. In addition, an ESS helps you pursue the goal of energy self-consumption and ultimately Energy-independence.

Electricity Bill Saving

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


  • Store solar energy generated from photovoltaic panels for the future use.

Emergency Power Back-Up

  • Discharge during a black-out, functioning as back-up power.
Key Features of New RESU Series

Compact Size & Easy Installation

The compact and lightweight nature of the RESU is world-class. It is deisgned 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 new RESU series features industry-leading continuous power (4.2 kW for RESU6.5) and DC round-trip efficiency (95%). LG Chem's L&S (Lamination & Stacking) technology provides durability ensuring 80% of capacity retention after 10 years.

Proven Safety

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.

Diversity in Product & Capacity Options

A total of five different models are available to meet customers varying needs with respect to voltage and capacity. With the RESU Plus, all 48V models can be "cross-connected" with one other 48V unit at any capacity. This allows the RESU Range to offer energy storage capacities from 3.3 kWh to 19.6 kWh.


Total Energy  kWh 3.3 6.5 9.8
Usable Energy kWh 2.9 5.9 8.8
Capacity Ah 63 126 189 
Nominal Voltage Vdc 51,8 51,8 51,8
Voltage Range Vdc 42,0 - 58,8 42,0 - 58,8 42,0 - 58.8
Max. Power kW 3,0 4,2 5,0
Peak Power  kW 3,3 4,6 7,0
Dimensions (W x H x D) mm 452 x 401 x 120 452 x 654 x 120 452 x 483 x 227
Weight Kgr 31 52 75
Enclosure Protection Rate   IP 55


  CAN 2.0 B
Certificates Cell UL 1642
Product CE / RCM / TUV (IEC 62619) / UL 1973


LG Chem RESU PlusRESU Plus is an expansion kit specially designed for 48V models of new RESU series.
With RESU Plus, all 48V models can be cross-connected with each other.

  • Dimension: 385 x 240 x 65 (W x H x D, mm)
  • Number of expandable Battery Units: Up to 2EA
  • IP55

Compatible inverter brands: SMA, SolaX, Sungrow, Schneider, Ingeteam, GoodWe, Redback, Victron Energy (More brands to be added)

Check compatible options at each case.

Total Energy kWh 7.0 9.8
Usable Energy kWh 6.6 9.3
Capacity Ah 63 63
Voltage Range Vdc 350 - 450 350 - 450 385 - 550
Max. Power kW 3.5 5.0
Peak Power kW (10 sec) 5.0 7.0
Dimension (W x H x D) mm 744 x 692 x 206 744 x 907 x 206
Weight Kgr 76 97 98,8
Enclosure Protection   IP 55
Communication   RS 485 RS 485 CAN 2.0 B
Certificates Cell UL 1642
Product TUV (IEC 62619) / CE RUV (IEC 62619) / UL1973 / CE


Compatible Inverter Brands: SMA, SolarEdge (More brands to be added)

Check compatible options at each case.

Catálogo General 2020

LG RESU Brochure

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Do you want more information about this product?  |  (+34) 965 560 025  |  Skype

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