VRLA Battery 12V 4AH | Dimension: 90x71x101x107mm
GRANKIA FG4-12 valve regulated sealed 12v lead acid battery 4ah is a rechargeable battery that uses lead and sulphuric acid to function. The lead is submerged into the sulphuric acid to allow a controlled chemical reaction.
The 12v lead acid battery is formed by dipping the lead peroxide plate and sponge lead plate in dilute sulfuric acid. An electric current is connecting externally between these plates. In diluted sulfuric acid, the acid molecules split into positive hydrogen ions (H+) and negative sulfate ions (SO4 − −).
Note:
The lead–acid battery consists of two electrodes submerged in an electrolyte of sulfuric acid.
Flooded acid, gel acid, and AGM.
All car batteries use direct current, or DC, power.
Nominal Voltage | 12V(6 cells per unit) | |||
Design Floating Life @25℃ | 5 Years | |||
Nominal Capacity @25℃(20 hour [email protected],10.50V) | 4.00Ah | |||
Capacity @25℃ | 10 hour rate (0.38A,10.8V) | 3.80Ah | ||
5 hour rate (0.70A,10.5V) | 3.50Ah | |||
1 hour rate (2.75A,9.6V) | 2.75Ah | |||
Internal Resistance | Full Charged Battery@25℃ | ≤60.0mΩ | ||
Ambient Temperature | Discharge | -20℃~50℃ | ||
Charge | -20℃~50℃ | |||
Storage | -20℃~50℃ | |||
Max. Discharge Current@25℃ | 60.0A(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 1.20A
Voltage 13.6-13.8V |
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Cycle Use | Initial Charging Current Less than 1.20A
Voltage 14.4-14.9V |
Discharge Constant Current per Cell (Amperes at 25°C)
F.V/Time | 5min | 10min | 15min | 30min | 45min | 1h | 2h | 3h | 5h | 8h | 10h | 20h |
1.60V | 13.75 | 9.94 | 7.83 | 4.58 | 3.21 | 2.75 | 1.62 | 1.11 | 0.74 | 0.49 | 0.40 | 0.211 |
1.67V | 13.50 | 9.83 | 7.61 | 4.50 | 3.15 | 2.70 | 1.59 | 1.09 | 0.73 | 0.49 | 0.39 | 0.207 |
1.70V | 13.25 | 9.56 | 7.44 | 4.42 | 3.09 | 2.65 | 1.56 | 1.07 | 0.71 | 0.48 | 0.39 | 0.204 |
1.75V | 13.00 | 9.11 | 7.22 | 4.33 | 3.03 | 2.60 | 1.53 | 1.05 | 0.70 | 0.47 | 0.38 | 0.200 |
1.80V | 12.50 | 9.00 | 7.00 | 4.17 | 2.92 | 2.50 | 1.47 | 1.01 | 0.67 | 0.45 | 0.38 | 0.198 |
Discharge Constant Power per Cell (Watts at 25°C)
F.V/Time | 5min | 10min | 15min | 30min | 45min | 1h | 2h | 3h | 5h | 8h | 10h | 20h |
1.60V | 26.47 | 19.61 | 15.11 | 8.82 | 6.18 | 5.29 | 3.12 | 2.13 | 1.42 | 0.96 | 0.79 | 0.417 |
1.67V | 25.99 | 19.28 | 14.67 | 8.66 | 6.06 | 5.20 | 3.06 | 2.09 | 1.39 | 0.94 | 0.78 | 0.406 |
1.70V | 25.51 | 18.89 | 14.28 | 8.50 | 5.95 | 5.10 | 3.00 | 2.06 | 1.37 | 0.92 | 0.76 | 0.400 |
1.75V | 25.03 | 17.78 | 13.89 | 8.34 | 5.84 | 5.01 | 2.94 | 2.02 | 1.34 | 0.91 | 0.75 | 0.394 |
1.80V | 24.06 | 17.22 | 13.50 | 8.02 | 5.62 | 4.81 | 2.83 | 1.94 | 1.29 | 0.87 | 0.73 | 0.389 |