ZAC-4
| Manufacturer | Jabil |
| Specific chemistry | zinc-iron |
| Capacity | 4.2 |
| Dimensions | 20 x 65 x 9.5 ft. |
| Energy (kWh) | 640 |
| Lifespan | 10,000 cycles @ 100% DOD - 20 years |
| Peak power (kW) | 152 |
| Battery Type | Flow |
| Weight (lb) | 18,000 dry / 50,000 lbs wet |
| Warranty | Up to 20 years with optional 95% power guarantee |