3-stage Battery Chargers for Cyclic Applications

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 Cycle Voltage Float Current A Battery Capacity 
9640 – 6  7.35V 6.9V 2.7A 11 – 60AH
9640 – 12  14.7V 13.8V 2.7A 11 – 60AH
9640 – 24  29.5V 27.6V 1.5A 6 – 30AH
9640 – 36 44.1V 41.4V 1.0A 4 – 20AH


Input Voltage 230 VAC (190 – 264 VAC)
Output Power 40 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
Dimensions 100 x 51 x 63mm
Weight 250g

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