The 9640 series is part of a family of 3-Step chargers from 10 – 240 watts. These 3-step chargers are designed for Cyclic applications, where the need to re-charge a battery as quickly as possible is the main requirement.

The charger operates in a boost/timer mode for approximately 4½ hours. At the end of the timer period, the charger will return to a Float Voltage level, where it can be left on indefinitely. The timer is automatically activated when the AC power is switched on.


Model Output CycleVoltage FloatCurrent ABattery Capacity 
9640 – 6 7.35V6.9V2.7A11 – 60AH
9640 – 12 14.7V13.8V2.7A11 – 60AH
9640 – 24 29.5V27.6V1.5A6 – 30AH
9640 – 3644.1V41.4V1.0A4 – 20AH


Input Voltage230 VAC (190 – 264 VAC)
Output Power40 watts
Output Voltage 6V models: 6.9V float,
12V models: 13.8V float,
24V models: 27.6V float
36V models: 41.4V float
Efficiency:Typically 81%
Load Regulation±1%
Line Regulation±0.5%
Operating Temp -10°C to +40°C
Dimensions100 x 51 x 63mm