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10.
BATTERY CHARGING
0. This charger adjusts the charging time in order to charge the battery
completely, efficiently and safely. However, this section includes
guidelines that can be used to estimate charging times.
0.2 The amount of time required to fully charge a weak battery is dependant
on a number of factors. In addition to the degree of discharge, these
factors include the type and rated capacity, temperature, age of the
battery, and amperage rating of the charger. At 70°F (22°C) the average
discharged battery will be recharged as follows.
Battery Size - Amp Hours
(Ah) Reserve Capacity RC)
Motorcycle/
Garden Tractor
Small - (2-22 Ah)
Large - (22-35 Ah)
Automotive/Truck
(Groups 24, 27, 31, etc.)
Small -
(70-00 RC)
Medium -
(00-30 RC)
Large -
(30-60 RC)
Heavy Duty -
(60-90 RC)
•
Charging Times are based on a 50% discharged battery - approx 2-
2.2 volts.
•
NR = Not Recommended.
•
Charging times will vary with battery type and condition.
0.3 Battery State – If a battery has only been slightly discharged, it can be
charged in less than a few hours. The same battery could take up to 0
hours if very weak. The battery state can be estimated by using the built-in
tester. The lower the reading the longer charging will take.
0.4. Battery rating – A higher rated battery will take longer to charge than
a lower rated battery under the same conditions. A battery is rated in
ampere-hours (AH), reserve capacity (RC) and cold cranking amps (CCA).
The lower the rating the quicker the battery will be charged.
Battery Charging Chart - Time
2-4
6-0
amp
amp
Time to Charge Battery - Shown in Hours (hrs)
2 hrs
NR
5
3.
hrs
hrs
7.5
3.75
hrs
hrs
9
4.5
hrs
hrs
2
6
hrs
hrs
5
7.5
hrs
hrs
9
•
•
Charging Rate - Amps
5
20
amp
amp
NR
NR
2.3
.75
hrs
hrs
2
.5
hrs
hrs
2.4
.8
hrs
hrs
3.2
2.4
hrs
hrs
4
3
hrs
hrs
40
60
amp
amp
NR
NR
0.875
0.6
hrs
hrs
0.75
0.5
hrs
hrs
0.9
0.6
hrs
hrs
.2
0.8
hrs
hrs
.5
hrs
hrs
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