Alpha-ESS Smile5 Battery 5.7kWh View larger

Alpha-ESS Smile5 Battery 5.7kWh


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Storion Series

All-in-one energy storage and management system for residential, industrial and commercial application

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The Alpha SMILE-BAT-5.7P is a 5.7kWh expansion battery module compatible with Alpha ESS SMILE5 Hybrid inverter.

Up to 6x Alpha SMILE 5.7 expansion battery modules can be connected in parallel to SMILE5 Hybrid inverter giving total capacity of 34.2kWh.

Market leading quality, without the corresponding price tag, the Alpha SMILE storage systems offer cloud monitoring, modular format for expansion at a later date, 96% DoD, superb performance and long lifespan.


Energy Capacity5.7kWh
Usable Capacity5.5kWh
Depth of Discharge (DoD)96%
Max. Charging Current56A (0.5C)
Max. Discharging Current56A (0.5C)
Cycle Life10000


This battery comes with 10 Year Warranty.

PLEASE NOTE: As per Alpha ESS Warranty document “It is required that all systems to have internet connection for monitoring. For those systems that are not connected to the internet the warranty is then reduced to 3 years. 


questions Kenneth Hall on 06/07/2020

Will the battery work with Axpert 5KW inverter?


Hi Kenneth, no these batteries only work with the Alpha-ESS inverter and the Goodwe ES inverter.

questions Mohammad on 17/06/2020

Will this battery work with a synapse 5k+ inverter


Hi Mohammad, no it won't. It only works with the Alpha and the Goodwe

questions Jaco on 13/05/2020

Hi is this the same battery as the slimline 5.7kwh, lgp lifepo1, eve energy endure? I bought my system from eco simply solar bit want add another battery and it looks like this one you advertise?


Hi Jaco, no unfortunately it is not the same. It is designed specifically for the Alpha ESS system.

questions Jacques on 16/02/2020

Hi does this work with the Sunsynk 8kw hybrid inverter? And can you connect more than of these batteries to the Sunsynk 8kw?


Hi Jacques, no these batteries are designed to work with the Alpha ESS system. You should use Pylontech batteries with the Sunsynk

questions conrad on 10/02/2020

hi can you buy extra batteries for future use? where and how much

questions Anton on 06/11/2019

Good afternoon. What is the lifespan of the Smile5 battery?


Hi Anton. The battery has a 10000 cycle life and is guaranteed for 10 years. You can find the spec sheet here:

questions George Dannhauser on 02/10/2019

Has this been tested, and will it work with a Goodwe 5048ES Inverter?


Hi George, yes these batteries have been tested with the Goodwe and work well. They are already incorporated into the Goodwe set up software as well.

questions Faan on 18/09/2019

Are these batteries compatible with Goodwe 4.6kw inverter/chargers?


Hi Faan. They are, yes.

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