Calculating Charge Time; Maintenance And Care - Craftsman CMXCESM233 Guide D'utilisation

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12. CALCULATING CHARGE TIME

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.
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.
The times given are for batteries with a 50% charge prior to recharging.
CCA = Cold Cranking Amps Ah = Amp Hour
RC = Reserve Capacity NR = Not Recommended
BATTERY SIZE/RATING
SMALL
BATTERIES
CARS/TRUCKS
MARINE/DEEP-CYCLE

13. MAINTENANCE AND CARE

A minimal amount of care can keep your battery charger working properly for years.
• Clean the clamps each time you are finished charging. Wipe off any battery fluid that may have come in
contact with the clamps, to prevent corrosion.
• Occasionally cleaning the case of the charger with a soft cloth will keep the finish shiny and help
prevent corrosion.
• Coil the input and output cords neatly when storing the charger. This will help prevent accidental
damage to the cords and charger.
• Store the charger unplugged from the AC power outlet in an upright position.
• Store inside, in a cool, dry place.
• Store the clamps on the storage areas provided on the handle. Do not store the clamps clipped
together, on or around metal, or clipped to the cables.
2
Motorcycle,
garden tractor, etc.
12-32 Ah
200-315 CCA 40-60 RC
315-550 CCA 60-85 RC
550-1000 CCA 85-190 RC
CHARGE RATE/CHARGING TIME
10A
6-12 Ah NR
NR
2¼-3 h
3-3¾ h
3¾-7 h
80 RC 3½ h
140 RC 5½ h
160 RC 6 h
180 RC 6½ h
• 8 •
20A 50A
NR NR
NR NR
1-1½ h 25-35 min
1½-2 h ½-¾ h
2-3½ h ¾-1½ h
1¾ h NR
2¾ h NR
3 h NR
3¼ h NR