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July 15, 2021

4000W High Power 48V battery chargers

More lead acid battery chargers 6V, 12V, 18V, 36V, 42V, 48V

Custom design and manufacture of state-of-the-art battery chargers, UPS, and power supplies for OEMs in a hurry!

55A 48V battery charger for golf carts and electric vehicles

Summary: This is a high efficiency switchmode charger based on the latest high frequency power supply design technology. This enables the charger to pack 4000 watts into a relatively small package.

Suggested Applications: Fast charging of flooded lead acid batteries and qualified VRLA batteries for fork lifts, club cars, golf carts, floats and other electric vehicles.

Application note: We have these installed in a luxury resort in the Seychelle Islands to provide fast-charge capabilities to their golf-cart fleet, providing 2-3 hour turn around.

Summary table high power 12 Volt (13.6) volt lead acid battery chargers  
Model number Continuous Amps Input Voltage Charging Amps Weight Charge algorithm Dimensions AC Service Required Price
PST-ESG4000 55A 230VAC
(180 VAC to 264 VAC)
55A 22 lbs 3 Stage 15 x 9.5 x 6 inches
22 Amps at 230VAC $1900
Allow 8 weeks for manufacture
Parameter Value Notes
Battery 48 Volt batteries: sealed lead acid, flooded lead acid, VRLA, gel, or AGM  
Output voltage 58.8V Constant voltage stage
55A constant current stage
55.2V Float charge phase
This charger can be left on indefinitely without overcharging the battery. The float charge phase keeps the battery maintained to prevent sulfation.
Output voltage tolerance ±0.8% no load
Input voltage rage 230 VAC (180VAC to 264VAC)  
Input Current 22 Amps at 230VAC input Make sure you have enough power available.
Input frequency 47-63Hz  
Typical efficiency >80%  
Short circuit protection Yes Automatic Recovery
Overload protection Yes  
Overvoltage protection By software  
Thermal Protection Yes Automatic recovery
Line regulation <0.02V  
Load regulation <0.02V at output terminals
Isolation 1500VAC/10mA/1minute input-output 10 megohm at 500VDC input or output to ground
  >10 megohms at 500VDC Input-ground and output-ground
Leakage current <3.5 mA Vin = 264VAC
Humidity 5% - 95%  
Altitude <10,000 Feet, 3000 Meters  
Ambient temperature -10°C to 40°C
Storage temperature -40°C to +70°C Warm to at least -10°C before operating, cool to at least 40°C before operating
Approvals CE compliant Designed to UL standards
MTBF >50,000 hours 25°C, full load  
LVD EN60335-1:2002
EMC EN61000-4-3:2002
Warranty 1 year
Size 420mm x 450mm x 180 mm
16.5 x 17.7 x 7 inches
Design Qualification Random Vibration 20 Hz to 2000Hz 3 axis, 20 hours per axis
  Repetitive Shock 40g peak 6 axis, 11mS pulse width, 3 times per axis
  Thermal Shock -35°C to +75°C <3 minutes, 2.5 hour dwell, 200 cycles
  Drop test BS EN60068-2-32:1993 Test Edition free fall Appendix B
Displays Digital Voltage
Digital Current
LED Red for charging, green for charged.

Maintenance mode: After the 48V battery is full the charger goes into a maintenance mode. In maintenance mode the battery is safely floated at 55.2 volts to maintain the battery and replace charge lost due to leakage or self discharge.

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High power 48 volt low noise battery chargers, golf cart fast charger, 48V battery chargers, high power 48 Volt battery charger

PowerStream Technology
1163 South 1680 West
Orem, Utah 84058

Phone: 801-764-9060
Fax: 801-764-9061

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