Calculating Charge Time - Schumacher SpeedCharge SC-1200A Owner's Manual

• If your vehicle won't start
battery to start a vehicle. If operating the vehicle continuously for an
extended period of time (such as a long drive) the vehicle's charging
system should charge the battery during that period. If the vehicle will
only be operating for a short period of time (short drive) the battery might
need to recharge before starting the vehicle again.
• Reviving your battery
to start a vehicle. When the battery's charge is 77% or more, the battery
has usually been charged enough for the vehicle to start and operate
normally.
• Completing an interrupted charge
interrupted and restarted, the charger could go straight to Maintain Mode.
However the charge can often be completed using the 2A rate.
12.

CALCULATING CHARGE TIME

Use the table on page 14 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 – motorcycle, garden tractors, etc. – are usually rated in
Ampere Hours (AH). For example: 6, 12, 32 AH etc.
• Batteries in cars and smaller trucks are usually rated in Reserve Capacity
(RC), Cold-Cranking Amps (CCA) or both.
• Marine or deep-cycle batteries are usually rated in Reserve Capacity (RC).
• NR means that the charger setting is NOT RECOMMENDED.
Find your battery rating on the chart and note the charge time given for each
charger setting. The times given are for batteries with a 50-percent charge
prior to recharging. Add more time for severely discharged batteries.
– It is not necessary to fully charge your
– It is not necessary to fully charge your battery
– If the charging process has been
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