VRLA Battery 12V 24AH | Dimension: 165x126x174x174mm
GRANKIA FG24-12 sealed maintenance free vrla 12v 24ah battery is designed to provide excellent performance, durability and long life. High performance plates and electrolyte give extra power output for common power backup system.
Sealed maintenance free 12v 24ah battery is assembled a complete design, having excellent performance in maintenance-free and leakage problem. The battery can offer a outstanding performance after deep discharge under frequently using, it can deliver nearly 250 cycles at 100% DOD.
If a battery is rated at 20Ah capacity at 20HR, it means that the battery can discharge 1 Amp per hour over that 20 hour period. A High Rate Battery will typically be rated at 10HR or less.
On average a standard car battery will be able to power a TV for around 10 to 20 hours.
In a broader sense, the amp hour rating does tell us a little bit about the battery’s capacity. For instance, a battery with a 10 Ah rating will last twice as long as a battery with a 5 Ah rating when used under similar conditions, but it does not mean that it will actually last 10 full hours.
Nominal Voltage | 12V(6 cells per unit) | |||
Design Floating Life @25℃ | 10 Years | |||
Nominal Capacity @25℃(10 hour [email protected],10.80V) | 24Ah | |||
Capacity @25℃ | 20 hour rate (1.28A,10.5V) | 25.6Ah | ||
5 hour rate (4.2A,10.5V) | 21.0Ah | |||
1 hour rate (15.3A,9.6V) | 15.3Ah | |||
Internal Resistance | Full Charged Battery@25℃ | ≤14mΩ | ||
Ambient Temperature | Discharge | -20℃~50℃ | ||
Charge | -20℃~50℃ | |||
Storage | -20℃~50℃ | |||
Max. Discharge Current@25℃ | 240A(5s) | |||
Capacity affected by Temperature
(10 hr Capacity ) |
40℃ | 102% | ||
25℃ | 100% | |||
0℃ | 85% | |||
-15℃ | 65% | |||
Self-Discharge@25℃ per Month | 3% | |||
Charge (Constant Voltage) @25℃ | Standby Use | Initial Charging Current Less than 6.0A
Voltage 13.6-13.8V |
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Cycle Use | Initial Charging Current Less than 6.0A
Voltage 14.4-14.9V |
Discharge Constant Current per Cell (Amperes at 25°C)
F.V/Time | 15min | 30min | 45min | 1h | 2h | 3h | 5h | 6h | 8h | 10h | 20h |
1.60V | 43.3 | 25.5 | 19.3 | 15.3 | 9.0 | 6.6 | 4.5 | 3.9 | 3.0 | 2.5 | 1.33 |
1.67V | 40.9 | 24.2 | 18.6 | 14.9 | 8.7 | 6.4 | 4.4 | 3.8 | 3.0 | 2.5 | 1.32 |
1.70V | 38.4 | 23.5 | 17.9 | 14.3 | 8.5 | 6.2 | 4.3 | 3.7 | 3.0 | 2.4 | 1.30 |
1.75V | 36.0 | 22.4 | 17.1 | 13.7 | 8.3 | 6.1 | 4.2 | 3.7 | 2.9 | 2.4 | 1.28 |
1.80V | 33.8 | 21.6 | 16.5 | 13.2 | 7.9 | 5.9 | 4.1 | 3.6 | 2.9 | 2.4 | 1.27 |
Discharge Constant Power per Cell (Watts at 25°C)
F.V/Time | 15min | 30min | 45min | 1h | 2h | 3h | 5h | 6h | 8h | 10h | 20h |
1.60V | 82.8 | 50.7 | 36.7 | 29.4 | 17.1 | 12.6 | 8.6 | 7.5 | 6.0 | 4.9 | 2.6 |
1.67V | 79.2 | 47.5 | 35.4 | 28.6 | 16.6 | 12.3 | 8.5 | 7.4 | 5.9 | 4.9 | 2.6 |
1.70V | 73.8 | 46.5 | 34.3 | 27.6 | 16.2 | 12.0 | 8.4 | 7.3 | 5.8 | 4.8 | 2.6 |
1.75V | 69.3 | 44.2 | 33.0 | 26.6 | 15.8 | 11.8 | 8.2 | 7.2 | 5.8 | 4.8 | 2.6 |
1.80V | 65.0 | 42.4 | 31.8 | 25.7 | 15.3 | 11.4 | 8.1 | 7.1 | 5.7 | 4.8 | 2.5 |