11
BC5500B Operating Instructions
Chart 1:
Determining Length of Charge using State of Charge and Capacity
10. Set required charge time on Length of Charge Timer. If
charge time exceeds 120 minutes, perform one of
following.
— Set Length of Charge Timer for any portion of total
charge time. Reset timer for remaining time when
charge time ends.
— Reset Length of Charge Timer at any time to extend
amount of charge time until total time required is
reached.
— Set Length of Charge Timer to HOLD and manually
turn charger off when required time is reached.
Charger does not turn off automatically.
Overcharging can damage battery.
11. Periodically monitor state of charge to prevent
overcharging, especially near end of charge period.
Battery is completely charged when specific gravity
and/or charging voltage do not increase after two hours.
STATE-OF CHARGE
STATE-OF-CHARGE 100% 75% 50% 25% DEAD
6 & 12V Specific Gravity 1.260 1.225 1.185 1.140 1.110
12V Open Circuit Voltage 12.6 12.4 12.1 11.9 11.8
6 V Open Circuit Voltage 6.3 6.2 6.1 6.0 5.9
BATTERY CAPACITY
6V Battery Voltage 12V
SMALL MEDIUM LARGE Battery Capacity SMALL MEDIUM LARGE
100 155 200+ Ampere hours 40 60 80+
160 275 430+ Reserve Capacity 60 90 100+
500 700 900+ Cold Cranking Amps 300 400 500+
LENGTH OF CHARGE TABLE
BA
TTERY CAPACITY % CHARGE BEGINNING AMPS CHARGE RATE
Small 0-25 45 30 30 25 25 20
25-50 30 20 20 15 15 10
50-75 15 10 10 10 5 5
Medium 0-25 70 50 45 40 35 30
25-50 45 30 25 20 20 20
50-75 25 15 15 15 10 10
Large 10-25 90 55 55 50 45 45
25-50 60 40 34 30 30 30
50-75 30 20 20 15 15 15
APPROXIMATE MINUTES OF CHARGE 15 30 45 60 75 90
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