SKUStock Power AC/DC Output Voltage Battery Charger Connector Type PriceQuantity
9940-12-000551940W12VBarrel plug $110.00
9940-12-000113040W12VBattery Clips $113.00


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 float 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.

Weight0.250 kg
Dimensions107 × 67 × 37 mm


Model Output CycleVoltage FloatCurrent ABattery Capacity 
9940 – 1214.7V13.8V2.3A9 – 60AH
9940 – 2429.5V27.6V1.3A4 – 30AH
9940 – 3644.1V41.4V0.9A3.20AH


Input Voltage90 – 264VAC
Output Power40 Watts
Output Voltage12V 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
Dimensions107 x 67 x 37mm

Ask for Assistance

Selecting the right power supply for your application is not a small task. Let our technical sales engineers guide you through the process of choosing the right solution for your needs.

Below some parameters usually required to size and select the right power supply:

  • Power & control requirements
  • Output & Input Voltage / Multioutput Voltage / Variable Voltage
  • Redundancy level
  • Mounting
  • Inrush Current
  • Environmental specifications (Temperature, altitude, vibration, shock)
  • Specific Industries Standards (Railway, Military, Medical)

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