MEP 24 Volt Constant Current Smart Battery Charger-Maintainer, 120 or 240 VAC Source, 2 Amp, Desulfator


24 Volt Constant Current Smart Battery Charger-Maintainer, 120 or 240 VAC Source, 2 Amp, Desulfator. This is an ideal charger/maintainer for situations where you have access to grid power while your generator is in standby or backup mode. You must maintain your batteries in peak condition for when you need them (e.g. on that cold snowy day when your power goes out!). Please note that the charger itself should be protected from the elements (rain, snow, ice and UV). For long-term UV protection, we recommend placing all wires in a protective wire loom (or other covering) obtainable at any auto-supply store.

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. # SON2404SX
Suitable for U.S., Canada, other 115 VAC countries and Japan (100VAC).
Soneil’s Battery Charger transforms the 115 VAC into 24 VDC at about 100,000 Hz (1667 times faster than conventional charger), which requires a much smaller transformer and thus results in a unit of smaller size, low weight and improved efficiency. The 2404S uses sophisticated electronic circuitry with microchips. All present day computers use switch-mode technology.

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 2A. When the battery voltage reaches 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 of adjusting the current automatically.

Stage 4: Standby Voltage Mode
The charger maintains the battery voltage at 27.6V and the 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 restarts 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
  • Automatic Cut Off and then True Float. Can be left connected indefinitely without harming the battery.
  • Two color LED to indicate charge status
  • Meets FCC Class B
  • Optimal 3 Step Charging
  • Built-in Mode Indicators
  • Demand Sensing
  • Reverse Polarity Protection
  • Over Voltage Protected
  • Short Circuit Protection
  • Overload Protection
  • 1 year Warranty

Tech Specs:

  • Dimensions (LxWxH): 4.7 x 2.9 x 1.6 in
  • Weight: .9 lb
  • Shipping Weight: 2.0 lb
  • Max Current, During Bulk Charge: 2 A
  • Absorption Voltage: 28.8 V
  • AC Input Volts: 115 V
  • AC Input Volts Freq.: 47/63 Hz
  • Model: Son2404SX
  • Manufacturer: Soneil
  • AC Input Volts Range: 90–132 V
  • Float Voltage: 27.6 V
  • Charge Reset: Battery Voltage Threshold: 27.6 V
  • Output Banks: 1
  • Warranty: 1 Year
  • Regulatory Approval: UL & cUL (CSA)
  • Manufacturer Part #: Son2404SX

20 in stock