Battery Chargers - FAQs

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What is Opportunity Charging
Opportunity charging refers to the ability to restore ampere-hours to the battery whenever the vehicle operator has the opportunity. Whenever the vehicle is idle as part of the operator’s routine, he/she can connect the charger and add energy to the battery.
What do the LED’s tell me about the charger?
Two LEDs (one yellow and one green) inform the user of charge status: Yellow On – AC Power present Green On – Charge Complete Green Blinking – Charging Yellow & Green On – Standby Mode Yellow & Green Blinking – No battery or reverse polarity
Do I need to set a timer on the charger?
There is no need to set a timer for basic charging. Unlike many ferro-resonant chargers, Curtis chargers will automatically detect when charge is complete and the charger will shut itself off. If desired, specific charge cycle times can be programmed into Curtis chargers.
Can I turn off the fan?
Yes, the charger can be programmed so that the fan is on at full speed when the charger is charging or it can be programmed so the speed of the fan is proportional to the temperature of the charger. This feature is called fan modulation.
What is multimode charging?
Multistage charging ensures batteries receive optimum charging, but with minimal wear and tear, regulating the voltage and current delivered to the batteries in three automatic stages:
Bulk: Replaces 70-80% of the battery’s state of charge at the fastest possible rate.
Absorption: Replenishes the remaining 20-30% of charge, bringing the battery to a full charge at a slow, safe rate.
Float: Voltage is reduced and held constant in order to prevent damage and keep batteries at a full charge.
Why shouldn't I just use a ferro-resonant charger?
Ferro-resonant chargers tend to either undercharge or overcharge your batteries. Basic chargers apply a set charge rate and then shut off with a timer. Batteries that are only partially discharged will receive the same timed charge and your batteries may overcharge which will cause them to overheat and could damage your batteries which will reduce your batteries life. Ferro-resonant chargers also don't have protection features to prevent overcharge such as temperature and voltage drop sensors. Also if there is a power interruption during charge the timer will start over and could result in overcharging your batteries.
What is the warranty for Curtis battery chargers?
Two years from the time of delivery.