SolarWatt MyReseve Designer

The SolarWatt MyReseve designer is the indispensable online tool made available free of charge for all technicians and designers to check the compatibility between the capacity of the desired storage system and the photovoltaic system.


MyReserve storage system as seen by the inverter?

The MyReserve storage system is connected between the MPPT input of the inverter and the photovoltaic generator, during the discharge phase and when it is in stand-by mode since it has reached 100% charge, is seen by the photovoltaic inverter just like a string of modules reproducing the classic IV curve of a photovoltaic generator.

MyReserve storage system with high voltage batteries

Furthermore, MyReserve is a storage system with high voltage batteries, the addition of each battery module modifies its input and output voltage characteristics, this makes the coupling of small capacities with high voltage strings difficult and failure to verify could lead to issues outside the product warranty.

How the designer  works

The configurator has in the database all the main brands of modules currently on the market and all the compatible inverters so that the choice of the size of the battery and the stringing of the photovoltaic field is easy with a few clicks.

Just indicate the place of installation, the module model chosen and the inverter with its desired battery model.

At the end it will be possible to download a PDF with useful data and compatibility from the batteries with the system.


SOLARWATT MyReserve 25


The system is made up of MyReserve Command, which contains all the battery power electronics, and MyReserve Pack, the compact module that conserves energy.

  • 2.4 kWh MyReserve Pack module
  • Possibility to connect 1 to 5 MyReserve Pack battery modules
  • Expansion possible up to 72 kWh, 6 units with 5 battery modules in parallel

Datasheet English

Fiche technique Français

Hoja técnica Español (EU)

Datenblatt Deutsch

Complete documentation

MyReserve 25 is a storage system connected in DC between the strings and the inverter. The storage system is modular and adapts to existing and new photovoltaic systems.

  • 10 years product warranty for MyReserve Command 25
  • Smart charging with weather forecast
  • Integrated secure Internet connection
  • Backup power capability
  • Outdoor installation (IP54) with optional anti theft kit
  • More effi cient (up to 1,000 V PV input voltage)
  • More fl exible (up to 72 kWh usable energy content)

System topology: DC-generator coupled

2 components – multiple options

MyReserve Command 25 (IP54)

MyReserve Command is a high efficiency converter for the MyReserve storage system connected on the DC side between the string and the inverter.

  • Connection of 1 to 5 MyReserve battery packs
  • Expandable up to 72 kWh
  • Peak power of up to 4.5 kW
  • Discharge efficiency of up to 96.7 %
  • Fast load response < 1 s (time to supply a load demand)
  • Self-learning algorithm for maximum self-consumption
  • Safe and easy installation
  • Bluetooth®-compatible service interface
  • Safety: certified as per “Safety guidelines for Li-ion household battery systems”
  • Low power consumption (2.5 – 7 W)
  • Outdoor installation (IP54)

MyReserve Pack 24.3 (IP54)

  • Powerful lithium-ion battery module for MyReserve battery system
  • 2.4 kWh usable energy per MyReserve Pack
  • 100 % Depth of Discharge
  • World record battery efficiency of 99.2 %
  • Long service life > 15 years
  • Single person installation (25 kg per MyReserve Pack)
  • Certified safety with multiple safety controls
  • Integrated BMS with voltage and temperature sensors
  • Individual cell monitoring
  • Dynamic adjustment of the charge current based on the PV generation + and the household‘s consumption
  • Can be expanded to a high-voltage storage system
  • Maintenance-free
  • No memory effect
  • Outdoor installation (IP54)

Custom-made performance and usable energy

Categories: , Tag: