| Test Load Chart | | |
| Battery Type | Load (A) | |
| 50D 20L | 150 | |
| 55D 23L | 180 | |
| Battery Voltage with Load | | |
| Approximate Battery Temperature | Minimum Voltage (V) | |
| 21 degrees C (70 degrees F) | 9.6 | |
| 15 degrees C (60 degrees F) | 9.5 | |
| 10 degrees C (50 degrees F) | 9.4 | |
| 4 degrees C (40 degrees F) | 9.3 | |
| -1 degrees C (30 degrees F) | 9.1 | |
| -7 degrees C (20 degrees F) | 8.9 | |
| -12 degrees C (10 degrees F) | 8.7 | |
| -18 degrees C (0 degrees F) | 8.5 | |
| Dark Current | 20 mA Max. | |
| Charging Current | | |
| Battery Type (5 Hour Rate) | Slow Charge (A) | Quick Charge (A) |
| 50D 20L (40) | 4.0-5.0 | 25 |
| 55D 23L (48) | 4.5-5.5 | 30 |