Battery Charging Times - Mäktig 710135 Owner's Manual

NOTE: A severely discharged battery may not be able to start an
engine even with the assistance of the 75A Engine Start. If your first
few attempts to boost the vehicle are unsuccessful, try charging the
battery at 25A for 20 minutes before attempting to boost again.

9. BATTERY CHARGING TIMES

The built-in intelligent microprocessor will continuously monitor and adjust
the charger to provide a fast, safe and efficient charge. Note that battery
charge times will vary depending on several factors including:
1. Battery State – If a battery has been only slightly discharged, it can
be charged in less than a few hours. This same battery could take
up to 10 hours if very discharged.
2. Battery Rating – A higher rated battery will take longer to charge
than a lower rated battery under the same conditions. A battery is
rated in ampere-hours (Ah), reserve capacity (RC) and cold-cranking
amps (CCA).
3. Charge Rate – The charge rate is measured in amps. A battery
charged at a lower rate will take longer than a battery charged at a
higher rate. However, smaller batteries can be easily damaged by
charging at a rate which is too high for the capacity of the battery.
4. Temperature – Cold temperature will affect a batteries ability to
accept a charge. Charging in cold temperatures will increase the
amount of time required to charge a battery.
Please consult the table to help you to choose the charging rate.
CURRENT SELECTED
TO CHARGE
2A
4A
12A
25A
NOTE: If battery size is unknown, charge at 2A rate. DO NOT
overcharge batteries
RECOMMENDED BATTERY CAP.
.
16
8AH~20AH
16AH~40AH
48AH~120AH
≥100AH