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452040-S,4.0A SLA Chargers

Regular price $99.22

Switch mode lead acid chargers are designed to effectively charge sealed lead acid batteries while protecting the batteries from over-charging. All charger ratings are based on a nominal input of 90-264 / 47-63Hz. The output current ranges from 2 Amps to 4 Amps


  • Medical approved (EN60601)
  • 3 step charge control with timer
  • Switch mode charger with universal input voltage
  • Available in 12V and 24V versions
  • LED status indicator
  • Protected against reverse polarity and short circuit
  • Custom specifications on request


Input rating: Nominal 90-264VAC/47-63Hz

Maximum output power: 60 Watts

Load regulation: <200mV

Line regulation: <100mV

Switch frequency: ≈40 kHz

Temperature range: -10°C to +40°C

Ripple: <100mVp-p

Efficiency (at 100% load): 80%

Insulation class: Class I

Electrical safety: UL 60601-1, EN 60601-1, EN 60950, EN 60335-2-29

EMC Standards: EN 60601-1-2 (Medical), EN 61000-6-3 (Emission), EN 61000-6-1 (Immunity)

Timer: 2hr ±30% (also available with other values)

Input connection: 3 pin IEC 320 (input cordset not included)

Output connection: Battery clips

Dimensions/weight: 5.31" x 3.15" x 1.73" (135 x 80 x 44mm)/ 0.77 lbs. (350g)

other output connection options available upon request


Once the charger is attached to a sealed lead acid battery and plugged in, the charging process will begin. The charger will subject the lead acid battery to three steps of charging.

In the first step, the charger will enter into 'boost' mode. During this step, the charger is in constant current mode with the current rate remaining at its maximum value (note- the battery voltage is lower than the switching level of the timer).

In step two, the battery will be nominally 80-95% charged, and the charger will switch into time controlled/ constant voltage mode (current is no longer being provided at its maximum rate). The charger will continue to provide a constant voltage until the time interval is completed.

The third and final step will place the charger in float/standby mode as the battery will be fully charged. Because the charge voltage is at a standby level, the charger can continue to be connected to the battery. Should the battery be used, the charger can return to rapid charging (step 1).

Note: The Prices include CORDSETS and adapters. Please call / specify the country this will be used in for us to send an appropriate cord. If no country is specified, we assume that it is for North America.

Battery Attributes
Amp H 4.0
Voltage 24.0 V

(Please mention the voltage and Amp Hour ( Ah) rating and or the watt hour (Wh) rating of the battery pack the charger will be used for while you place your order)

Minimum Purchase Quantity = 10
Orders placed in Quantity less than 10 will not be processed.