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Battery Charger

Model: DC24V-40A

Mob: 0086 13957777629
Tel: 0086 577 8892 0090
Fax: 0086 577 8895 5231

Battery Charger DC12V/24V-40A

* Three stages variable charging voltage algorithm by timing for maximizing the battery lifetime

* Large charging capacity design (40A for 12Vdc mode, 20A for 24Vdc mode) for shortening the charging time

* Selectable charging currents based on connected battery capacity for extending battery lifetime with optimized charging current

* Multiple voltage charging design for protecting diverse types of batteries of Flooded Lead-Acid, Gel, AGM chemistries batteries

* Wider input voltage range from 90Vac to 280Vac for universal input

* High AC to DC converting efficiency design (higher than 80%)

* Smart fan control -Build-in fan control firmware for controlling fan on/off status bases on charger operating mode. When the battery is charged, the fan will stop to reduce the noise and also extend the fan lifetime.

<-------- Can Move Left or Right -------->


Input Voltage

180-280VAC full performance

90-180VAC automatically derate to 50% of full load current


40Hz to 70Hz

Nominal Input Current at Rated Output


Voltage Measurement Accuracy


Frequency Measurement Accuracy



Nominal Voltage

12/24Vdc manual adjustable

Output Current

Input voltage 180-280V,

output current 40A for 12V mode

output current 20A for 24V mode

Input voltage 90-180V,

output current 20A for 12V mode

output current 10A for 24V mode

Rated Output Current

Manual adjustable

Current Accuracy

± 6% of full rated output current @25°C, for target currents across the range from 10% rated output (for absorption exit criteria accuracy) to the current limit setpoint.

Load Regulation


Current Limit


Dead-Battery Charging

8-14.9Vdc at 100% of rated output current

8-29.8Vdc at 100% of rated output current

Selectable Battery Type

Flooded Lead-Acid, Gel, AGM, manual adjustable

Parallel Outputs

Maximum two charger units connection in parallel




Input Over Voltage

Unit must be safe for input voltage up to 300VacRMS (and up to 430Vpeak), need not be operating. Above this level the unit may be damaged.

Reverse Battery Polarity Protection

Non-destructive reverse battery polarity protection with fuses. Unit shall not sustain damage and shall meet all specifications after fuse replacement.

Input Under-voltage

Unit must not be damaged for all input voltages from 0-300Vac.  Shutdown or input current limit or other means may be applied when input voltage is out of normal operating range.

Output over voltage

12/24V mode

Unit will shut down if Vcharging > Vcharging (target) + 1.0Vdc for more than 2 seconds; unit will restart when voltage <= Vcharging (target) for more than 2 seconds.
For battery OVP the unit will restart in the same stage.

Unit will shut down if Vcharging > Vcharging (target) + 1.5Vdc for more than 2 seconds; unit will restart when voltage <= Vcharging (target) for more than 2 seconds.
For battery OVP the unit will restart in the same stage.

Charger over temperature protection 

The internal temperatures of the charger will be measured by NTC. Based on these measurements, unit will shut down if the temperature exceeds 60°C. Unit will restart when environment temperature cools to 55 °C.


Operation temperature

Nominal ambient temperature: 25°C

Operating ambient temperature range: -10°C to 60°C

Full performance: -10°C to +40°C
Derated mode: +40°C to +60
Automatically shut down when over 60 °C

Relative humidity

5~95% without condensation


Unit requirements: below 50dB (A) measured at 1 m distance with fan full working.

Storage Conditions Temperature

-20°C to +80°C


Fan Cooling with Smart fan control




Dimension (D x W x H) mm

224 x 255 x 80

Unit Weight

1.7 kg

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