Supported Batteries

Sunny Island

The Sunny Island supports lead-acid batteries of types FLA and VRLA as well as various lithium-ion batteries. It is important to observe the capacity:

  • Lead-acid batteries with a capacity of 100 Ah to 10000 Ah can be connected.

  • Lithium-ion batteries with a capacity of 50 Ah to 10000 Ah can be connected.

This corresponds to a maximum storage capacity of 480 kWh for a battery with 48 V and 10000 Ah.

A lithium-ion battery is especially suited for intermediate storage of PV energy due to its high cycle stability. The lithium-ion batteries must be compatible with the Sunny Island:

  • The battery must comply with the locally applicable standards and directives and must be intrinsically safe.

  • The Sunny Island must only be operated in connection with an intrinsically safe lithium-ion battery approved by SMA Solar Technology AG (see Technical Information "Approved Batteries and Information on Batteries in Sunny Island Systems" at www.SMA-Solar.com).

  • If no lithium-ion battery approved for the Sunny Island can be used, use a lead-acid battery.

Sunny Boy Smart Energy and Sunny Tripower Smart Energy

Both the Sunny Boy Smart Energy and the Sunny Tripower Smart Energy must only be operated in connection with an intrinsically safe lithium-ion battery approved bySMA Solar Technology AG (see Technical Information "Approved Batteries and Information on Battery Communication Connection" at www.SMA-Solar.com).

Lithium-ion battery for Sunny Island, Sunny Boy Smart Energy and Sunny Tripower Smart Energy

The battery management of lithium-ion batteries controls the operation of the battery. To enable battery management, the lithium-ion battery must be connected to the battery inverter or hybrid inverter via a data cable.

In the case of compatible lithium-ion batteries, SMA Solar Technology AG has only tested the interaction between the battery inverter and the battery management of the lithium-ion battery. For information on other technical properties of the batteries, please contact the respective manufacturer of the lithium-ion battery.

Lithium-ion batteries in battery-backup systems

In order to meet the requirements of battery-backup systems in the event of grid failure, the battery inverter or hybrid inverter has an overload capability. To be able to use this overload capability, the output powers and output currents of the battery inverter or hybrid inverter must be taken into consideration when selecting the battery (for Sunny Island see Technical information “List of Approved Batteries”, for Sunny Boy Smart Energy and Sunny Tripower Smart Energy, see Technical Information "Approved batteries and battery communication connection").

    Recommendations for Battery Capacity
    Battery use