The built-in 2.24kWh battery stores surplus energy that you can use at any time and expand to 4.48kWh. It is equipped with high-quality battery cells and has an impressive service life of over 6000 charging cycles. The MS also offers you far more than just clean energy for everyday use. It also serves as a reliable emergency power supply for your home and can also be used as a stand-alone, portable power station. It can also be easily integrated into existing systems. Installation is child's play and can be done in no time at all via Plug&Play. Disconnect your micro inverter, connect the storage unit in between and reconnect it to the power grid - that's it!

Product highlights
Expandable to 4.48 kWh in parallel operation
Self-heating function
Manage all factors of the MS-A2
checking the energy system performance
real-time monitoring and control via app
2 buttons for optimum user-friendliness
3 indicator lights to check the status
Battery level indicator for an overview
Interfaces: LED and S-Miles Cloud

Maximum efficiency and higher savings
With the storage system, you can optimize your energy yields intelligently. Plan the use or storage of solar power at the most cost-efficient times and avoid expensive peak prices. In combination with Shelly 's smart sockets and meters, you always have an overview of your consumption statistics. The result? No wasted energy, higher yields and significantly lower energy costs!

Maximum compatibility
With conventional DC-coupled systems, the storage inverter has to precisely match the DC power flow from your panels to the MPPT algorithm of the micro inverter. The MS-A2 was developed to avoid all of this. The innovative balcony power plant storage unit completely eliminates the problem and also significantly increases energy efficiency. It can work with any micro inverter. You can find a few compatible models here.

When it gets colder
The Hoymiles-MS guarantees you a reliable energy supply all year round. Thanks to its innovative self-heating function, the device remains in optimum operation even in extreme winter cold. So you can rely on a stable and safe energy source at all times.

Switches and displays
Power switch - for switching on/off
Setting - network settings, Bluetooth control and pairing
Status display - S-Miles Cloud connection, system status, Bluetooth connection
Battery level - four-stage status check
S-Miles account creation
You can create your S-Miles account directly. The instructions from Hoymiles can be found in the download area. The MA-A2 is certified according to ETSI EN 303 645 for cyber security and thus offers reliable protection of your personal data.

Technical specifications
AC output (mains connection)

Mains output power: 800VA
Max. Output apparent power: 800VA
Mains type: 1-phase
AC-Nennspannung/Bereich: 230V/180-270V
AC rated frequency/range: 50Hz/45-55Hz
Rated output current: 3.48A
Max. Output current: 3.48A
AC input and output (mains-independent connection)

Max. Output apparent power: 800VA
Peak output apparent power: 1200VA, 10s
Mains type: 1-phase
Plug type: Schuko socket
Rated AC voltage: 230V
AC nominal frequency: 50Hz
Max. Output voltage: 3.48A
Max. Output power: 1000W
Max. Input power: 1800VA
Max. Input current: 7.83A
Battery type

Battery type: LiFePO4
Capacity: 2240Wh
Life cycles: >6000
Charging temperature: 0°C - 55°C
Discharge temperature: -20°C - +55°C
Nominal apparent power: 1000VA (charging and discharging)
General information

Mounting: Wall or floor mounting
Cooling: Natural convection - no fans
Communication: Bluetooth, 2.4GHz WLAN
Protection class: IP65
Operating temperature range: -20°C - +55°C
Weight: 32kg
Dimensions: 455 x 220 x 457mm