Cotek CX1250 Automatic Battery Charger / Power Supply

Canadian PowerSKU: CX1250

Sale price$313.95 Regular price$388 Save $74.05
10 In stock Free Shipping


The Cotek CX1250 is a high performance, high efficiency, 12 volt, 50 amp, 4 stage, automatic battery charger and power supply that can be used in marine, RV and off grid applications. 

 This unit is built with a universal input voltage range of 90~264VAC and is compatible with Lead Acid, LI-ion, Gel and AGM batteries. It features a 2 stage fan speed control, a built-in battery rescue function and will charge 3 battery banks simultaneously. The protection features are Short Circuit, Over Voltage, Over Temperature and Brown-out. The Cotek CX1250 is CE listed

2 Year Manufacturers Warranty

  • Universal AC input with active PFC
  • Compatible with Lead Acid, Li-ion, Gel and AGM batteries
  • Support optional remote controller (CR-1)
  • Voltage / temperature compensation with battery temp. sensor (Optional)
  • 2-stage fan speed control ( thermal & load control)
  • Dry contact for alarm
  • High efficiency and high reliability
  • Built-in battery rescue function: In case of battery over discharge (when the battery voltage is lower than 10V), the charger will reduce the charging current to prevent further damage on the battery.
  • Protection: Short Circuit / Over Voltage / Over Temperature / Brown-out
  • Withstand 2G vibration test
  • RS-232 communication interface
  • Output power OK signal
  • Battery Type: Lead Acid / Li-ion / Gel / AGM
  • Battery Charging Mode: 4 - stage charging capability (IUOU): Bulk, Absorption, Float and Recondition
  • Recondition Stage: Every 12 days the battery charger switches back to Bulk stage for 85 minutes in order to revive the battery thus preventing any fatigue symptoms such as sulphation
  • Short Circuit: Current is reduced to < 1A continued 30sec. , fan will operate 30 seconds then turn off
  • Alarm Signal: NC. / NO. Relay contact output (Please refer to page 5 Alarms Signal & Fan Control )
  • Power Mode: Supply 13.2V Current limit output voltage
  • Temperature Compensation: -10mV / 0.5 degrees C with COTEK temperature sensor
  • Charging Sleep Mode By Remote Controller and S1-4 DIP switch (Please refer to page 4~5)
  • Remote Controller Note.5: Support COTEK Remote Controller CR-1 setting Function (CN3 or CN4)
  • Working Temp.: -20 ~ 50 degrees C (refer to output load de-rating curve)
  • Working Humidity: 20 ~ 90% RH non-condensing
  • Storage Temp., Humidity: -40 ~ +85 degrees C, 20 ~ 90% RH
  • Temp. Coefficient: 0.03% (0 ~ 50 degrees C)
  • Vibration: 10 ~ 500Hz, 2G 10min. / 1cycle period for 60min. each along X, Y, Z axes
  • Safety Standards: Certified EN 60335-1, EN 60335-2-29
  • Withstand Voltage: I/P-O/P: 4242VDC, I/P-FG: 1768VDC, O/P-FG: 700VDC
  • Isolation Resistance: I/P-O/P: 100M Ohms / 500VDC
  • EMS Immunity: IEC 61000-4-2, 3, 4, 5, 6, 8, 11; ENV 50204
  • Note 1. All parameters not specially mentioned are measured at 230VAC input, rated load and 25 degrees C of ambient temperature.
  • Note 2. The charger is considered a component which will be installed into a final equipment. The final equipment must be re-confirmed that it still meets EMCdirectives.
  • Note 3. Before charging, make sure the battery charger and battery specifications are compatible.
  • Note 4. When use sleep mode, please refer to charging current v.s. heat sink temperature de-rating curve.
  • Note 5. Optional Remote Controller (CR-1).



ac current 8.24 A / 100VAC 3.6A / 240VAC
amps 50 Amps
banks Duel Bank
current range 0 ~ 50A
dimensions 8.4H x 3.0L x 10.7W inches; 213 x 76.5 x 272 mm
efficiency At 230VAC: 87%
frequency 47 ~ 63Hz
input voltage range 90 ~ 264VAC
leakage current For earth < 1mA / 240VAC
main output 3
main rated current 50A
output voltage 12 Volts
over/under voltage 17.5V 1%, Protection type: Shut down output (recovery after resetting AC power on)
power factor PF > 0.92 at full load
single output current limit 40A
stages 4 Stage
standard boost charge voltage 14.4V / 14.7V (Select by S1-1)
standard float charge voltage 13.8V / 13.5V (Select by S1-2)
weight 6.8 lbs. ; 3.1kg.

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