Product parameter:
Model No | ENP 25100 | ENP 51100 | ENP 51200 | ENP 4020 |
Normal Voltage | 25.6V | 51.2V | 51.2V | 400V |
Normal Capacity | 2.56kWh | 5.12kWh | 10.2kWh | 10.2kWh |
Useable Capacity | 2.5kWh | 5kWh | 9.8kWh | 9.8kWh |
Operating Voltage | 21.2V-28.4V | 43.2V-57.6V | 43.2V-57.6V | 350V-430V |
Recommended Power Charge/Discharge current | 50A(0.5C) | 50A(0.5C) | 100A(0.5C) | 65A(0.33C) |
Max.PowerCharge/Disch a egecurrent | 100Amax(1C) | 100Amax(1C) | 150Amax(0.75C) | 130A(0.65C) |
Peak Output current | 110A(3S) | 110A(3S) | 200A(3S) | 140A(3S) |
Rated DischargingPower | 2.6kW | 5kW | 7.5kW | 5kW |
Max dischargingPower | 3KW(@SOC20%) | 5.5KW(@SOC20%) | 10KW(@SOC20%) | 7KW(@SOC30%) |
Round-trip Efficiency | ≥96% | ≥97% | ≥96% | ≥95% |
Dimension (W/D/H) | 450x380x93mm | 450x560x90mm | 600x110x1200mm | 1470x110x600mm |
Weight | 20Kg | 42.8Kg | 82Kg | 90Kg |


How to save utility bill from Residential First Tech ESS?
01.Self-Consumption Optimization
High energy demand in the morning andevening butsolar generation is most efficient during the mid-day.1STESS Batterystorage systems balance the feedingand demands.Realize your grid independence.
02. Benefits from Peak Shaving
House:Load Shifting
Store the power during low peak and use the energyat peak-time.Save the money which happens arisingfrom peak rate.
Transmission & Distribution: Peak shaving
Save on the electricity bills by reducing peakdemand.
03.0ptimize System Performance
The First Tech residential energy storage system(RESS) slim type low voltage series battery packscan work with a solar energy storage systems andoptimize system performance, absorb excessive PV electricity and supply power for residence whenever needed.This product can be wall mounted or floor mounted and allows for parallel connection.
Product features:
* High energy density and efficiency
* Flexible capacity options, 2.5kWh~320kWh* Excellent safety of LiFePo4 battery cells
* Compact size and easy installation
* Up to 10 Years of Service Life >6000Cycles
* Automatically assign any host
* Compatible with market leading single phase&three phase inverters
* Auto balance modules with different SOC
Application Scenarios:
* Residential Applications
* Small Commercial or industrial application
* Micro off-grid systems