Schumacher Automatic PSW-70300A User Manual
Page 11

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11
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The 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.
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.
BATTERY SIZE/RATING
CHARGE RATE/CHARGING TIME
4 AMP
20 AMP 40 AMP
70 Amp
SMALL
BATTERIES
Motorcycle,
garden,
tractor, etc.
6 - 12 AH
1 - 2 hrs
NR
NR
NR
12 - 32 AH
2 - 5 hrs
NR
NR
NR
CARS/
TRUCKS
200 - 315 CCA
40 - 60 RC
5½ - 7¼
hrs
1 - 1½
hrs
½ - ¾ hr
20 - 30
min
315 - 550 CCA
60 - 85 RC
7¼ - 9¼
hrs
1½ - 2
hrs
¾ - 1 hr
30 - 40
min
550 - 1000 CCA 80 - 190 RC
9¼ -
17½ hrs
2 - 3½
hrs
1 - 1¾
hrs
40 min -
1 hr
MARINE/DEEP CYCLE
80 RC
8¾ hrs
1¾ hrs
NR
NR
140 RC
13½ hrs
2¾ hrs
NR
NR
160 RC
15 hrs
3 hrs
NR
NR
180 RC
16½ hrs
3½ hrs
NR
NR
MAINTENANCE INSTRUCTIONS
14.
After use and before performing maintenance, unplug and disconnect the battery
14.1
charger (see Sections 6, 7 and 8).
Use a dry cloth to wipe all battery corrosion and other dirt or oil from the terminals,
14.2
cords, and the charger case.
Ensure that all of the charger components are in place and in good working condition,
14.3
including the plastic boots on the battery clips.
Servicing does not require opening the unit, as there are no user-serviceable parts.
14.4
All other servicing should be performed by qualified service personnel.
14.5
MOVING AND STORAGE INSTRUCTIONS
15.
Store the charger unplugged, in an upright position. The cord will still conduct electricity
15.1
until it is unplugged from the outlet.
Store inside, in a cool, dry place.
15.2
Store the clips on the fiberglass clamp rod. Do not store them on the handle, clipped
15.3
together, on or around metal, or clipped to the cables.
if the charger is moved around the shop or transported to another location, take care to
15.4
avoid/prevent damage to the cords, clips and charger. Failure to do so could result in
personal injury or property damage.