OctaVolt HV126 is a professional high-voltage (~400V) energy storage system designed for premium residential, commercial, and light industrial applications. The system is built using 126 high-performance LiFePO4 cells – EVE MB31 – each rated at 314Ah.
The 126S configuration delivers approximately 403V nominal voltage and around 126 kWh of total energy capacity, making it ideal for integration with modern high-voltage photovoltaic inverters.
OctaVolt HV126 is engineered for intensive, long-term operation.
Designed for 8000+ cycles at 80% Depth of Discharge (DoD) under standard operating conditions (25°C)
High thermal stability thanks to LiFePO4 chemistry
Consistent long-term performance
Slow capacity degradation under normal use
Depending on usage profile, the system can provide an estimated service life of 15–20 years.
Nominal capacity: ~126 kWh
Nominal voltage: ~403V
Configuration: 126 cells in series (126S)
Cell capacity: 314Ah
Chemistry: Lithium Iron Phosphate (LiFePO4)
Cycle life: 8000+ cycles at 80% DoD
Applications: HV solar systems, backup power, commercial storage
✔ Compatible with high-voltage inverters
✔ Reduced conversion losses due to elevated voltage
✔ Superior safety compared to conventional lithium-ion systems
✔ Low cost per lifecycle
✔ Scalable within the OctaVolt HV series (HV126 / HV252)
Large residential solar installations
Commercial and light industrial buildings
Energy efficiency projects
Backup power for critical infrastructure
High-consumption prosumers
Lithium Iron Phosphate chemistry provides:
High chemical and thermal stability
Reduced risk of thermal runaway
Excellent long-term cycling performance
Enhanced operational safety
Designed for the Romanian and European market, OctaVolt HV126 meets modern energy efficiency, durability, and smart-grid integration requirements.
OctaVolt HV126 – Stable Energy. Long-Term Performance.
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Compatible with RECHARGEABLE Batteries: Li-ion / IMR / INR / ICR / NCR 3.6v ~ 3.7v
10340, 10350, 10440, 10500, 12340, 12500, 12650, 13450, 13500, 13650, 14350, 14430,
14500, 14650, 16500,16340(RCR123), 16650, 17350, 17500,17650, 17670, 18350,
18490, 18500,18650, 18700, 20650, 20700, 21700, 22500, 22650, 25500, 26500, 26650
And Ni-MH / Ni-Cd: AA, AAA, AAAA or C
