Schumacher SI-1275A - Manual (Page 33)

• 33 •
12. 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.
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
2 AMP 6 AMP 10 AMP 12 AMP
SMALL
BATTERIES
Motorcycle,
garden
tractor, etc.
6-12 AH 2-3¾ hrs ½-1¼ hrs NR NR
12-32 AH 3¾-10 hrs 1¼-3½ hrs NR NR
CARS/
TRUCKS
200-315 CCA 36-46 AH 11¼-14½ hrs 3¾-4¾ hrs 2¼-3 hrs 2-2½ hrs
315-550 CCA 46-58 AH 14½-18¼ hrs 4¾-6 hrs 3-3¾ hrs 2½-3 hrs
550-1000 CCA 58-111 AH 18¼-34¾ hrs 6-11½ hrs 3¾-7 hrs 3-5¾ hrs
MARINE/DEEP CYCLE
56 AH 17½ hrs 6 hrs 3½ hrs 3 hrs
86 AH 27 hrs 9 hrs 5½ hrs 4½ hrs
96 AH 30 hrs 10 hrs 6 hrs 5 hrs
106 AH 33¼ hrs 11 hrs 6½ hrs 5½ hrs
13. MAINTENANCE INSTRUCTIONS
13.1 After use and before performing maintenance, unplug and disconnect the battery charger
(see sections 6, 7 and 8).
13.2 Use a dry cloth to wipe all battery corrosion and other dirt or oil from the battery clips,
cords, and the charger case.
13.3 Ensure that all of the charger components are in place and in good working condition, for
example, the plastic boots on the battery clips.
13.4 Servicing does not require opening the unit, as there are no user-serviceable parts.
13.5 All other servicing should be performed by qualified service personnel.
14. MOVING AND STORAGE INSTRUCTIONS
14.1 Store the charger unplugged, in an upright position. The cord will still conduct electricity
until it is unplugged from the outlet.
14.2 Store inside, in a cool, dry place.
14.3 Do not store the clips on the handle, clipped together, on or around metal, or clipped to cables.
14.4 If 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.
15. TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE REASON/SOLUTION
No reading on the
ammeter.
Charger is not plugged in.
No power at the receptacle.
Clips are not making a good
connection to the battery.
Connections are reversed.
Battery is defective (will not
accept a charge).
2 amp charge rate is being used.
Plug the charger into an AC outlet.
Check for open fuse or circuit
breaker supplying AC outlet.
Check for poor connection to battery
and frame. Make sure connection
points are clean. Rock clips back
and forth for a better connection.
Unplug the charger and reverse the
clips.
Have battery checked.
Ammeter may show no activity at
the 2A charge rate.