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12.calculating charge time
12.1The Chart Method
Use the following table to more accurately determine the time it will take to bring a battery to full charge. First, identify where your battery fits into the chart.
•Small batteries — motorcycles, garden tractors, etc. — are usually rated in Ampere Hours (AH). For example: 6 to 12 AH, or 12 to 32 AH.
•Batteries in cars and smaller trucks are usually rated in Reserve Capacity (RC),
•Marine or
•NR means that the charger setting is NOT RECOMMENDED.
Find your battery’s rating on the chart below and note the charge time given for each charger setting. The times given are for batteries with a
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BATTERY SIZE/RATING | CHARGING TIME - HOURS | ||||
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| 2 AMP | 50 AMP | |
SMALL | Motorcycle, gar- | 6 - 12 AH | 2 - 4 | NR | |
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BATTERIES | den, tractor, etc. | 12 - 32 AH | 4 - 10 | NR | |
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| 200 - 315 CCA | 40 - 60 RC | 11 - 14 | 30 to 45 min. | |
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CAR/TRUCKS | 315 - 550 CCA | 60 - 85 RC | 14 - 18 | 45 min - 1 | |
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| 550 - 1000 CCA | 85 - 190 RC | 18 - 35 | 1 - 2 hours | |
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| 80 RC | 18 | NR | |
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MARINE/DEEP CYCLE | 140 RC | 27 | NR | ||
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160 RC | 30 | NR | |||
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| 180 RC | 33 | NR | |
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