Fortress Power eVault Max 18.5
The Fortress Power eVault Max 18.5 is a battery pack with a peak of 230 A (12 KW 30 min) and CAN/RS485 communication.
Last updated: 28 October 2026
Battery and charging
- Peak discharge
- 230A (12 KW 30 min)
- Efficiency
- 98%
Row from the maker’s page: “Peak Discharge Rate” | “230A (12 KW 30 min)”
Source: fortresspower.com/download/894/evault-max/47916/fortress-power-evault-max-data-sheet-english.pdf
Row from the maker’s page: “Efficiency (at 0.5C)” | “98%”
Source: fortresspower.com/download/894/evault-max/47916/fortress-power-evault-max-data-sheet-english.pdf
Battery care and safety
- Temperatures it may be charged in
- 32°F ~ 120°F (0°C ~ 49°C)
- Temperatures it may be run in
- -4°F~140°F (-20°C ~ 60°C)
Row from the maker’s page: “Charge Temperature” | “32°F ~ 120°F (0°C ~ 49°C)”
Source: fortresspower.com/download/894/evault-max/47916/fortress-power-evault-max-data-sheet-english.pdf
Row from the maker’s page: “Discharge Temperature” | “-4°F~140°F (-20°C ~ 60°C)”
Source: fortresspower.com/download/894/evault-max/47916/fortress-power-evault-max-data-sheet-english.pdf
Compatibility
- Communication protocol
- CAN/RS485
Row from the maker’s page: “Communication Protocol” | “CAN/RS485”
Source: fortresspower.com/download/894/evault-max/47916/fortress-power-evault-max-data-sheet-english.pdf
Certification claims
- Standard certified to
- UL1642, UL1973, UL9540, UL9540A, CEC, SGIP
Row from the maker’s page: “Certifications” | “UL1642, UL1973, UL9540, UL9540A, CEC, SGIP”
Source: fortresspower.com/download/894/evault-max/47916/fortress-power-evault-max-data-sheet-english.pdf
Sources
- Archived document
Source: fortresspower.com/download/894/evault-max/47916/fortress-power-evault-max-data-sheet-english.pdf
Retrieved October 28, 2026