Calculating Charge Time - DSR PSC-12500A Owner's Manual

• If your vehicle won't start
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. If operating the vehicle continuously for an extended
period (such as a long drive), the vehicle's charging system should
charge the battery back to normal during that period. If the vehicle will
only be operated for a short period (short drive), the battery might need
to be charged again before it could start the vehicle again.
• Completing an interrupted charge
85% charge; if the charging process is interrupted and restarted, the
charger could go straight into Maintain Mode. However, if the original
charge was started using the 15◄►40A rate, the charge can often be
completed using the 2A rate.
13.

CALCULATING CHARGE TIME

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.
Cold cranking amps (CCA) is a measurement of the number of amps a
battery can deliver at 0°F for 30 seconds and not drop below 7.2 volts. A
high CCA battery rating is good especially in cold weather.
Reserve Capacity (RC) is a very important rating. This is the number of
minutes a fully charged battery at 80°F will discharge 25 amps until the
battery drops below 10.5 volts.
An amp hour (AH) is a rating usually found on deep cycle batteries. If a
battery is rated at 100 amp hours, it should deliver 5 amps for 20 hours,
20 amps for 5 hours, etc.
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
50% charge prior to recharging. Add more time for severely discharged
batteries.
– It is not necessary to fully charge your
– Once the battery has reached
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