Deep Cycle Battery Charger, Lead Acid Batteries: 40W

The 9940 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 2 – 3 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.

Main Features

  • 3-step charge control with timer
  • Universal input 90~264 VAC
  • LED indicators with three different colours
  • Medical safety approval
  • Optional battery clips or various barrel plug connectors
  • Fully isolated input – output
  • Overload and short circuit protection
  • EMC and CE marked
  • Optional mounting bracket
  • IP67 waterproof option
  • Approval No. N19260


Timer: Units can be offered with different timer periods including zero timers. In this case, the charger operates in the oat mode, making it suitable for standby applications, where battery and load are connected to the charger

Power Cord: IEC320 input connector with power cable is standard. Optional fixed mains power cable.


Model  Output Cycle Voltage Float Current A Battery Capacity 
9940 – 12 14.7V 13.8V 2.3A 9 – 60AH
9940 – 24 29.5V 27.6V 1.3A 4 – 30AH
9940 – 36 44.1V 41.4V 0.9A 3.20AH


Input Voltage 90 – 264VAC
Output Power 40 Watts
Output Voltage 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 107 x 67 x 37mm
Weight 250g

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