Specifications
| Nominal Voltage | 12V | |
| Rated Capacity (20 hour rate) | 26Ah | |
| Dimensions | Total Height (with terminals) | 4.92 inches (125mm) |
| Height | 4.92 inches (125mm) | |
| length | 6.93 inches (175mm) | |
| width | 6.54 inches (166mm) | |
| Weight | Approx 17.2 pound (7.8kg) | |
Characteristics
| Capacity 77°F (25°C) | 20 hour rate (1.30A) | 26Ah | |
| 10 hour rate (2.47A) | 24.7Ah | ||
| 5 hour rate (4.39A) | 21.95Ah | ||
| 1 hour rate (14.9A) | 14.9Ah | ||
| 15 minute rate (38.8A) | 9.7Ah | ||
| Internal Resistance | Full charged Battery 77°F (25°C) | 14mΩ | |
| Capacity Affected by Temperature (20 hour rate) | 104°F (40°C) | 102% | |
| 77°F (25°C) | 100% | ||
| 32°F (0°C) | 85% | ||
| 5°F (-15°C) | 65% | ||
| Self-Discharge 77°F (25°C) | Capacity after 3 month storage | 91% | |
| Capacity after 6 month storage | 81% | ||
| Capacity after 12 month storage | 60% | ||
| Max. Discharge Current 77°F (25°C) | 390A (5S) | ||
| Terminal | M2 / B5 / B11 | ||
| Charge
(constant voltage) |
Cycle | Initial charging current less than 7.8A | |
| Voltage 14.4~14.7 V / 77°F (25°C) | |||
| Float | Voltage 13.5~13.8V / 77°F (25°C) | ||
Discharge Curves 77°F (25°C)
Relationship between charge voltage and temperature
Constant Current Discharge (AMPERES @ 25°C)
| F.V/Time | 5min | 15min | 30min | 45min | 1h | 2h | 3h | 4h | 5h | 6h | 8h | 10h | 20h |
| 1.65 | 92.8 | 48.1 | 28.8 | 20.4 | 16.5 | 9.3 | 7.25 | 5.81 | 4.75 | 4.08 | 3.18 | 2.63 | 1.37 |
| 1.70 | 84.1 | 45.3 | 27.3 | 19.9 | 16.1 | 9.1 | 6.94 | 5.62 | 4.62 | 3.99 | 3.13 | 2.58 | 1.36 |
| 1.80 | 67.8 | 38.8 | 25.3 | 18.3 | 14.9 | 8.6 | 6.64 | 5.35 | 4.39 | 3.80 | 3.03 | 2.47 | 1.30 |
Constant Power Discharge (WATTS PER CELL @ 25°C)
| Cut off Voltage V/cell | 5min | 15min | 30min | 45min | 1h | 2h | 3h | 4h | 5h | 6h | 8h | 10h | 20h |
| 1.60 | 169.7 | 90.0 | 55.6 | 39.3 | 31.3 | 18.3 | 14.28 | 11.52 | 9.45 | 8.07 | 6.27 | 5.24 | 2.73 |
| 1.65 | 157.5 | 85.6 | 53.0 | 37.9 | 31.2 | 17.7 | 13.87 | 11.22 | 9.19 | 7.92 | 6.23 | 5.19 | 2.72 |
| 1.70 | 144.8 | 81.2 | 50.7 | 37.3 | 30.7 | 17.5 | 13.36 | 10.91 | 8.97 | 7.78 | 6.15 | 5.09 | 2.69 |
| 1.75 | 135.3 | 77.1 | 48.9 | 36.1 | 29.8 | 17.1 | 13.05 | 10.60 | 8.77 | 7.64 | 6.07 | 5.0 | 2.64 |
| 1.80 | 122.6 | 71.5 | 47.5 | 35.0 | 28.6 | 16.6 | 12.85 | 10.40 | 8.57 | 7.45 | 5.97 | 4.87 | 2.62 |
| 1.85 | 92.31 | 59.9 | 40.9 | 30.3 | 25.7 | 15.3 | 12.03 | 9.81 | 8.03 | 6.97 | 5.65 | 4.73 | 2.60 |
The operating environment temperature above 40°C should be avoided. After long term storage, the battery actual capacity would be less than the rated capacity. Full capacity will be obtained through several charge/discharge cycles.
To get the longest life, battery should be fully charged before storage.
Cycle service life in relation to depth of discharge
Constant voltage charge characteristic
Self-Discharge Characteristics
Relationship of OCV and Residual Capacity % (25 C°)
Temperature effects on capacity
Temperature effects float life
