CHARGE VOLTAGE REFERENCE
For a 6V battery, divide the voltage by 2.
REFRESH CHARGE
If Fullriver batteries are properly charged they
should never require an equalizing charge. If
they were not properly charged and there is a
decrease in capacity, recharge the batteries and
make sure they complete the entire charge cycle.
If the batteries are stored for extended periods
of time, recharge them as follows:
Storage Temperature Refresh Charge
Interval
Below 68˚F (20˚C) 9 Months
68˚F (20˚C) - 86˚F (30˚C) 6 Months
Higher than 86˚F (30˚C) 3 Months
OTHER CHARGERS
There are many types of chargers and inverters
available for charging lead-acid batteries. If
you are not sure if your charger meets the
recommended charging characteristics or if you
need help programming your charger, please
contact your local Fullriver Battery distributor for
assistance.
12V Battery Charge
Voltage Float Voltage
32˚F (0˚C) 15.30 14.25
50˚F (10˚C) 15.06 14.01
50˚F (10˚C) 14.82 13.77
77˚F (25˚C) 14.70 13.65
86˚F (30˚C) 14.58 13.53
104˚F (40˚C) 14.34 13.29
0.30
0.25
CURRENT (X C20 RATE)
VOLTAGE PER CELL
CHARGING TIME: <=20 HRS
BULK ABSORPTION
U = 2.45V/Cell (+/- .05V/Cell)
I = 0.012 - 0.02 x C 202
Voltage varies with age
to a maximum of 2.7V/Cell
Termination: dV/dT= 2.5mV/Cell/hr
or 105-110% recharge
Temperature: 25˚C (77˚F)
TERMINATION
0.20
0.15
0.10
0.05
0.00
2.60
2.50
2.40
2.30
2.20
2.10
2.00
Temperature Coefficient: -4mV/ C/cell (-2mV/ F/cell)
0 0
Maximum absorption time = 8 hrs.
Maximum termination time = 8 hrs.
I = 0.15 - 0.35 x C
1 20
