BMZ ESS 7.0
The BMZ ESS 7.0 is a battery pack with a nominal voltage of 55.5 V, Li-Ion NMC cells, dimensions of 638 x 421 x 487 mm, a weight of 95 kg and CAN communication.
Last updated: 28 October 2026
Battery and charging
- Usable energy (kilowatt-hours)
- 5.39 kWh
- Energy (kilowatt-hours)
- 6.74 kWh
- Voltage
- 55.5 V
- Chemistry
- Li-Ion NMC
- Rated charge cycles
- 5,000
- Highest charge current it will take
- 90
- Maximum discharge current, as the maker labels it
- 300
- Charging voltage
- 61.5
- Voltage it cuts off at
- 45.0
- Depth of discharge it is rated at
- 80%
- How fast it loses charge sitting idle
- ca. 2 % per year
Row from the maker’s page: “Energy (nom./usable)” | “6.74 kWh/5.39 kWh”
Source: bmz-group.com/images/Datenblatt_Energy_Storage_EN_new.pdf
Row from the maker’s page: “Energy (nom./usable)” | “6.74 kWh/5.39 kWh”
Source: bmz-group.com/images/Datenblatt_Energy_Storage_EN_new.pdf
Row from the maker’s page: “Nominal voltage” | “55.5 V”
Source: bmz-group.com/images/Datenblatt_Energy_Storage_EN_new.pdf
Row from the maker’s page: “Battery chemistry” | “Li-Ion NMC”
Source: bmz-group.com/images/Datenblatt_Energy_Storage_EN_new.pdf
Row from the maker’s page: “Full cycles” | “5,000”
Source: bmz-group.com/images/Datenblatt_Energy_Storage_EN_new.pdf
Row from the maker’s page: “Max. charge” | “90 A”
Source: bmz-group.com/images/Datenblatt_Energy_Storage_EN_new.pdf
Row from the maker’s page: “Max. discharge current” | “300 A (3 sec)”
Source: bmz-group.com/images/Datenblatt_Energy_Storage_EN_new.pdf
Row from the maker’s page: “Charge end voltage” | “61.5 V”
Source: bmz-group.com/images/Datenblatt_Energy_Storage_EN_new.pdf
Row from the maker’s page: “Discharge end voltage” | “45.0 V”
Source: bmz-group.com/images/Datenblatt_Energy_Storage_EN_new.pdf
Row from the maker’s page: “Discharge depth” | “80% DOD”
Source: bmz-group.com/images/Datenblatt_Energy_Storage_EN_new.pdf
“Self discharge (cells): ca. 2 % per year”
Source: bmz-group.com/images/Datenblatt_Energy_Storage_EN_new.pdf
Battery care and safety
- Operating temperature range
- 2 °C to +45 °C
- Ingress protection
- IP 21
- Temperatures it may be stored in
- 10 °C to 25 °C
“Discharge temperature (cells): 2 °C to +45 °C”
Source: bmz-group.com/images/Datenblatt_Energy_Storage_EN_new.pdf
“Protection class: IP 21 | European Conformity (CE): yes”
Source: bmz-group.com/images/Datenblatt_Energy_Storage_EN_new.pdf
“Recommended storage temperature: 10 °C to 25 °C”
Source: bmz-group.com/images/Datenblatt_Energy_Storage_EN_new.pdf
Size and fit
- Weight
- 95 kg
- Overall dimensions
- 638 x 421 x 487 mm
Row from the maker’s page: “Weight” | “95 kg”
Source: bmz-group.com/images/Datenblatt_Energy_Storage_EN_new.pdf
Row from the maker’s page: “Dimensions (W x H x D)” | “638 x 421 x 487 mm”
Source: bmz-group.com/images/Datenblatt_Energy_Storage_EN_new.pdf
Compatibility
- Communication protocol
- CAN
Row from the maker’s page: “Communication” | “CAN – SMA ready”
Source: bmz-group.com/images/Datenblatt_Energy_Storage_EN_new.pdf
Sources
- Archived document
Source: bmz-group.com/images/Datenblatt_Energy_Storage_EN_new.pdf
Retrieved October 28, 2026