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Soneil 24v 1.5 Amp Constant Current World Smart Charger Son2403SR

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Product InformationStore Part Number: Son2403SR


Protection provided: Reverse Polarity, Short Circuit, Over-Voltage, Over Current and AC Surge. Soft Start and Stop; Starts and stops gradually. No sudden in-rush of current. This protects both the batteries and any other circuits connected to the charger.

Soneil’s Battery Charger transforms the 115/230 VAC into 24 VDC at about 100,000 Hz (1667 times faster than conventional charger), which requires a much smaller transformer and this results in a unit of smaller size, low weight and improved efficiency. The 2403SRD uses sophisticated electronic circuitry with microchips. All present day computers use switch-mode technology.

Multi Stage charging cycle

Stage 1: Deep Discharge Charging Pulse Mode
The Charger starts charging at 0.5V and give pulse current up to 5V. This has effect of removing loose sulphation formed during deep discharge state of the battery.

Stage 2: Constant Current Mode (CC)
The charger changes to constant current 1.5A. When the battery voltage reaches up to 28.8V, the charging stage changes from (CC) Constant Current to CV (Constant Voltage) mode.

Stage 3: Constant Voltage Mode (CV)
The charger holds the battery at 28.8V and the current slowly reduces. When the current reaches at 0.5 C (C= Battery Capacity), this point called the Switching Point. The Switching Point is one of the great features of this battery charger that it can adjust the current automatically according to the battery capacity. Other chargers without microprocessors are not capable to adjust the current automatically.

Stage 4: Standby Voltage Mode
The charger maintains the battery voltage at 27.6V and current slowly reduces to zero. Charger can be left connected indefinitely without harming the battery.

If the battery voltage drops to 27.6V, the charger changes from any mode to Constant Current mode and restart charging. The charging cycle will go through Stage 2 to Stage 4.

This charger typically ships without output connectors, allowing customer to adapt the charger to their specific needs.


  • Totally Automatic Switch-Mode Battery Charger
  • Suitable for Gel, Sealed (AGM) and Wet Lead Acid Batteries
  • Suitable for use anywhere in the world.
  • Input 115/230 VAC (range 90 VAC to 264 VAC) (47-63Hz)
  • Automatic Cut Off and then True Float. Can be left connected indefinitely without harming the battery.
  • Two color LED to indicate charge status
  • UL, CSA, CE, TUV, GS & T-mark (Japan) Listed
  • Meets FCC Class B; EN55022 Class B
  • Mean Time between failures 50,000 hours
  • Zero Current Drain when AC power is off
  • Optimal 3 Step Charging
  • Built-in Mode Indicators
  • Demand Sensing
  • Reverse Polarity Protection
  • Over Voltage Protected
  • Short Circuit Protection
  • Overload Protection
  • 1 year Warranty


*Flat Rate shipping is for the lower 48 states only.

Tech Specs

  • Dimensions (LxWxH): 4.7 x 2.7 x 1.6 in
  • Weight: .9 lb
  • Shipping Weight: 2.0 lb
  • Max Current, During Bulk Charge: 1.5 A
  • Absorption Voltage: 28.8 V
  • AC Input Volts: 115/230 V
  • AC Input Volts Freq.: 47/63 Hz
  • Manufacturer: Soneil
  • AC Input Volts Range: 90-264 V
  • Float Voltage: 27.6 V
  • Charge Reset: Battery Voltage Threshold: Below 27.6 V
  • Output Banks: 1
  • Warranty: 1 year
  • Regulatory Approval: UL, CSA, CE, TUV, GS & T-mark (Japan) Listed
  • Manufacturer Part #: Son2403SR

Reviews and Ratings

5.00 Average
5 Stars 3
4 Stars 0
3 Stars 0
2 Stars 0
1 Stars 0
Rated 5.00/5 Stars from 3 customer reviews.

Do you own the Son2403SR? Please, tell us what you think about it. It helps us provide you with better products. Please note that it may take up to 72 hours for your review to appear.

Soneil 24V 1.5A Constant Current World Charger Son2403SR
Pros: it works. We are using it for our StairLift. It keeps the battery charged nicely and I don't have to worry about overcharging the battery.
Cons: the only con I have is it didn't come with the connectors I needed.. but that is probably as designed since there would be a whole LOT of connectors that could use this charger..but that is the only con at the moment for me. :)
Have a great day eh!
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Written by on Feb 03, 2012. Ownership: Use regularly. Knowledge Level: Electricity doesn't scare me.. usually — (90 of 167 customers found this review helpful
The product was great and exactly what I needed.
The product was needed for a home elevator system and worked perfectly.
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Written by on Dec 30, 2019. Verified Purchase
As described, fair price, fast delivery.
Works as described
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Written by on Aug 28, 2019. Verified Purchase

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