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Use the following table to more accurately determine the time it will take to bring a battery to full charge.
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 50% charge prior to recharging. Add more time for severely discharged
batteries.
CALCULATING CHARGE TIME
BATTERY SIZE/RATING
CHARGE RATE/CHARGING TIME
2 A
12 A
Small batteries Motorcycle, garden
tractor, etc
6 – 12 Ah
2 – 4 h
NR
12 – 32 Ah
4 – 10 h
NR
Cars/trucks
200 – 315 CCA
40 – 60 RC
11 1/4 – 14 1/2 h
1 3/4 – 2 1/2 h
315 – 550 CCA
60 – 85 RC
14 1/2 – 18 1/4 h
2 1/2 – 3 h
550 – 1000 CCA
85 – 190 RC
18 1/4 – 34 3/4 h
3 – 5 3/4 h
Marine/deep-cycle
80 RC
17 1/2 h
3 h
140 RC
27 h
4 1/2 h
160 RC
30 h
5 h
180 RC
33 h
5 1/2 h
CCA: Cold cranking amps.
RC: Reserve capacity.
Ah: Amp hour.
NR: Not recommended.
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OPERA
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