SOLARWATT expands its flexible battery, MyReserve Matrix: Each battery module now holds ten percent more energy – while staying small. By using new, more powerful battery cells the storage capacity of a single battery module has increased from 2.2 kWh to 2.4 kWh. The MyReserve control unit (MyReserve Command) and five battery modules can now hold a maximum capacity of 12 instead of the previous 11 kWh. The MyReserve Packs with the new battery cells are fully backwards compatible with all previous versions of the battery.
“With these new battery cells, which can handle more than double the charge / discharge cycles as before, SOLARWATT is preparing for future use cases which require many charging and discharging cycles per day. The number of cycles the cells can reach is so high that it no longer plays a role in the overall service life of the battery," says Dr. Olaf Wollersheim, Managing Director of the SOLARWATT INNOVATION Research and Development Center. When deliveries started of the MyReserve Matrix in summer 2017, the maximum cycle count was removed from the guarantee conditions of the MyReserve Matrix battery. "The question of how many charge / discharge cycles a battery goes through is, in our view, a topic of yesteryear. An appropriately designed battery should reach the end of its service life in terms of calendar aging and not in terms of cycle counts." Wollersheim continues.
In order for the battery to last a long time, calendar aging must be delayed as long as possible. This is the task of an intelligent battery management system (BMS). SOLARWATT batteries have a sophisticated BMS that captures and monitors scores of data each second. Each line of the software used was programmed by SOLARWATT engineers themselves. "We are the only manufacturer in Europe who develops and manufactures both the batteries and the power electronics themselves. Thanks to this know-how, MyReserve batteries have received numerous awards for their safety and efficiency," says Wollersheim.