Trojan Battery User Guide

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USER’S GUIDE
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Table 6
Deep-Cycle Gel Batteries - Charger Voltage Settings
**
System Voltage 6 Volt 8 Volt 12 Volt 24 Volt 36 Volt 48 Volt
Bulk Charge (2.40 VPC) 7.20 9.60 14.40 28.80 43.20 57.6 0
Float Charge (if desired 2.25 VPC) 6.75 9.00 13.50 27.00 40.50 54.00
** Gel batteries should always use temperature compensated charging per the following rule:
5.0 mV per cell / °C or 2.8 mV per cell / °F
Subtract 0.005 volt per cell from the voltage reading for every 1°C above 25°C, or add 0.005 volt per cell for every 1°C
below 25°C. Subtract 0.0028 volt per cell for every 1°F above 77°F, or add 0.0028 volt per cell for every 1°F below 77°F.
The chart below illustrates a typical recharge prole:
Diagram 6
Recommended Trojan Deep-Cycle Gel Charging Prole
Note: Charging time will vary depending on battery size, charger output, and depth of discharge.
Voltage
(per cell)
Current
(Amps)
2.40V
(@25°C, 77°F)
Charge Current
Charge Voltage
20% 80%
100%
State of Charge (%)
10-13% C
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