| Model | 
ESS-20 | 
ESS-40 | 
| *Energy (kW/kWh) | 
603/756 | 
1206/1512 | 
| Output | 
Voltage | 
480V 3P/ PE | 
| Power Factor | 
+0.8~-0.8 | 
| Frequency | 
50/60 Hz | 
| Voltage Harmonic Distortion | 
<3% | 
| Mechanical | 
Size (L*W*H) m | 
6.058 x 2.438 x 2.591 | 
12.192 x 2.438 x 2.896 | 
| Container type | 
Frozen container | 
Communicate interface | 
RS485 | 
| Battery module | 
Rate capacity (Ah) | 
105 | 
| Rate voltage (V) | 
38.4 | 
| Work voltage (V) | 
36~41.4 | 
| Size (D*W*H,mm) | 
521x149x236 | 
| Weight(kg) | 
<=30.5 | 
Operating  temperature (℃) | 
Charge: 0℃ ~ 55℃ Discharge: -20℃ ~ 55℃ | 
Storage  temperature (℃) | 
0℃ ~ 35℃, Less than 12 months -20℃ ~ 45℃, Less than 1 month | 
| Battery cabinet | 
Rated capacity (Ah) | 
105 * 1 string | 
| Rated voltage (V) | 
806 | 
Maximum operating  voltage (V) | 
869 | 
Minimum working  voltage (V) | 
756 | 
Rated charging  current | 
105A *1 String | 
| Size (D*W*H) mm | 
750*900*2077 | 
| Weight (kg) | 
<800kg | 
Number of  cycles (times) | 
>75% of initial capacity with 3000 cycles at 25℃ abmient.  Charge: 1C, 869V, 0.05C cut-off @25℃ Discharge: 1C, 756V cut-off @25℃ | 
Operating  temperature (℃) | 
Charge: 0℃ ~ 55℃  Discharge: -20℃ ~ 55℃ | 
Storage  temperature (℃) | 
0℃ ~ 35℃, Less than 12 months  -20℃ ~ 45℃, Less than 1 month | 
Number of  battery modules | 
21 PCS*1 String | 
| * The system can be customized according to customer needs |