Project Description
48V battery pack – Lithium-Iron-Phosphate (LiFePO4) – 40Ah with a LCD display screen
• High lifespan: two thousand cycles and more (see chart)
• Deep discharge allowed up to 100 %
• Ultra safe Lithium Iron Phosphate chemistry (no thermal run-away,
no fire or explosion risks)
• Embedded BMS (Battery Management System): improve lifespan
AND secure the battery
• No Lead, no heavy metal, no toxic element
• Calendar life > 10 years
• Excellent temperature robustness (-20 °C up to +60 °C)
• Constant power during discharge (very low internal resistance)
• Very low Peukert’s losses (energy efficiency >96 %)
• Very low self-discharge (<3 % per month)
• No memory effect
• About 50 % lighter and 40% smaller than equivalent Lead-AGM
battery with same usable energy
| Characteristic | ||
| Item | Specification | |
| Model | EJ-4840FEA | EJ-4840FEB |
| Rated Capacity (5HR) | 40 AH | 40 AH |
| Nominal Voltage | 51.2 V | 51.2 V |
| Discharge Ending Voltage | 43.2 V | 43.2 V |
| Charging Limited Voltage | 57.6 V | 57.6 V |
| Max. Charging Current | 25.0 A | 25.0 A |
| Max. Continue Discharging Current | 25.0 A | 25.0 A |
| Weight | Approx. 25 Kg | Approx. 25 Kg |
| Display | Without a display screen | With a LCD display screen |
| Parallel Connection | Parallel connection is optional (up to 16P). When paralleling, the max. charging current is 10A | |
| Dimensions (W*D*H) mm (inches) | 436 (17.17″) * 400 (15.75″) * 132.5 (5.22″) | |
| Containing Cell | ||
| Design Life | More than 10 years | |
| Cycle Life | More than 3000 cycles at 80% DOD | |
| IP Class | IP30 | |
| Outer Package Material | White bake lacquer steel case (battery rack or cabinet is optional) | |
| Operating Temperature | Charging: 0 to +45℃ Discharging: -20 to +60℃ Storage: -20 to +60℃ | |
| Discharge Table | |||||||
| Constant Current Discharge Table (Amperes) at 25℃ | |||||||
| Model | Voltage Time | 1 h | 2 h | 3 h | 4 h | 5 h | 10 h |
| EJ-4840FEA | End of discharge voltage 43.2 V | / | 19 A | 13.3 A | 10A | 8 A | 4 A |
| EJ-4840FEB | End of discharge voltage 43.2 V | / | 19 A | 13.3 A | 10A | 8 A | 4 A |
| Constant Power Discharge Table (Watts) at 25℃ | |||||||
| Model | Voltage Time | 1 h | 2 h | 3 h | 4 h | 5 h | 10 h |
| EJ-4840FEA | End of discharge voltage 43.2 V | / | 965 W | 645W | 485W | 390 W | 196 W |
| EJ-4840FEB | End of discharge voltage 43.2 V | / | 965 W | 645 W | 485W | 390 W | 196 W |
