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

Motorcycle,

6 - 12 AH

1 - 2 hrs

NR

NR

NR

garden,

 

 

 

 

 

BATTERIES

12 - 32 AH

2 - 5 hrs

NR

NR

NR

tractor, etc.

 

200 - 315 CCA

40 - 60 RC

5½ - 7¼

1 - 1½

½ - ¾ hr

20 - 30

 

hrs

hrs

min

 

 

 

 

CARS/

315 - 550 CCA

60 - 85 RC

7¼ - 9¼

1½ - 2

¾ - 1 hr

30 - 40

TRUCKS

hrs

hrs

min

 

 

 

 

550 - 1000 CCA

80 - 190 RC

9¼ -

2 - 3½

1 - 1¾

40 min -

 

17½ hrs

hrs

hrs

1 hr

 

 

 

 

 

80 RC

8¾ hrs

1¾ hrs

NR

NR

MARINE/DEEP CYCLE

140 RC

13½ hrs

2¾ hrs

NR

NR

160 RC

15 hrs

3 hrs

NR

NR

 

 

 

 

180 RC

16½ hrs

3½ hrs

NR

NR

14.MAINTENANCE INSTRUCTIONS

14.1After use and before performing maintenance, unplug and disconnect the battery charger (see Sections 6, 7 and 8).

14.2Use a dry cloth to wipe all battery corrosion and other dirt or oil from the terminals, cords, and the charger case.

14.3Ensure that all of the charger components are in place and in good working condition, including the plastic boots on the battery clips.

14.4Servicing does not require opening the unit, as there are no user-serviceable parts.

14.5All other servicing should be performed by qualified service personnel.

15.MOVING AND STORAGE INSTRUCTIONS

15.1Store the charger unplugged, in an upright position. The cord will still conduct electricity until it is unplugged from the outlet.

15.2Store inside, in a cool, dry place.

15.3Store the clips on the fiberglass clamp rod. Do not store them on the handle, clipped together, on or around metal, or clipped to the cables.

15.4if the charger is moved around the shop or transported to another location, take care to avoid/prevent damage to the cords, clips and charger. Failure to do so could result in personal injury or property damage.

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Schumacher PSW-70300A owner manual Chart Method, Battery SIZE/RATING Charge RATE/CHARGING Time, Maintenance Instructions