Calculating Charge Time - Proseries PSW-70300A Manual Del Usuario

USING THE ALTERNATOR
PERFORMANCE TESTER
This battery charger has a built-in alternator
tester that displays an estimate of the
alternator's relative output, compared to
normal alternators. The alternator % values
displayed should be taken as a general
reference, not a precise diagnosis. The
alternator tester functions the same as the
built-in battery voltage tester (see previous
section for details), with a few differences.
Testing Sequence
There are four basic steps required to
operate this unit as an alternator tester:
1. With the charger unplugged from the AC
outlet, connect the charger to the battery,
following the instructions in CHARGING
A BATTERY IN THE VEHICLE or
CHARGING A BATTERY OUTSIDE THE
VEHICLE.
When you know the percent of charge and
the Amp hour (Ah) rating of your battery,
you can calculate the approximate time
needed to bring your battery to a full charge.
Example:
Amp hour rating = Reserve capacity + 16
NOTE: The Reserve Capacity can be
obtained from the battery's specification
sheet or the owners manual.
To calculate the time needed for
a charge:
1. Find the percentage of charge needed.
2. Multiply the Amp hour rating by the charge
needed, and divide by the charge rate.
3. Multiply the results by 1.25 to find the
total time needed, in hours, to bring the
battery to full charge.
4. Add an additional hour for a deep-cycle
battery.
BATTERY SIZE/RATING
SMALL Motorcycle,
BATTERIES garden tractor, etc.
200-315 CCA
CARS/
315-550 CCA
TRUCKS
550-1000 CCA
MARINE/DEEP-CYCLE

CALCULATING CHARGE TIME

2
6-12 Ah
12-32 Ah
40-60 RC
60-85 RC
80-190 RC
80 RC
140 RC
160 RC
180 RC
• 8 •
2. Set the charge rate switch and the timer
to the OFF position.
3. Plug the charger's AC power cord into the
AC power outlet.
4. Start the vehicle and turn on the vehicle's
headlights.
5. Read the voltage on the voltmeter.
GENERAL CHARGING NOTES
Fan
The charger is designed to control its cooling
fan for efficient operation. It is normal for the
fan to start and stop when maintaining a fully
charged battery. Keep the area near the
charger clear of obstructions, to allow the fan
to operate efficiently.
Voltage
The voltage displayed during charging is the
charging voltage and is usually higher than
the battery's resting voltage.
Example:
Ah rating x % of charge needed x 1.25 = hrs of charge
Charger Amp setting
100 (Ah rating) x .50 (charge needed) x 1.25 = 3.125 hrs
20 (Charger Setting)
100 x .50 x 1.25 = 3.125
20
You need to charge a 100 Ampere hour
battery for a little more than 3 hrs at the 20
Amp charge rate, using this example.
Use the following table to determine the time it
will take to bring a battery to full charge.
Ah – Ampere Hours
NR – the charger setting is NOT
RECOMMENDED.
CCA – Cold Cranking Amps
RC – Reserve Capacity
The times given are for batteries with a 50%
charge prior to recharging.
CHARGE RATE/CHARGING TIME
4 AMP 20 AMP
1-2 hrs NR
2-5 hrs NR
1-1½ hrs
5½-7¼ hrs
7¼-9¼ hrs 1½-2 hrs
9¼-17½ hrs 2-3½ hrs
1¾ hrs
8¾ hrs
2¾ hrs
13½ hrs
15 hrs 3 hrs
16½ hrs 3½ hrs
40 AMP 70 AMP
NR NR
NR NR
½-¾ hr 20-30 min
¾-1 hr 30-40 min
1-1¾ hrs 40 min-1 hr
NR NR
NR NR
NR NR
NR NR