Guangdong, China
Business Type:
Manufacturer/Factory, Trading Company
OEM/ODM Service
Sample Available

Charger, Battery Charger, 12V Battery Charger manufacturer / supplier in China, offering Wholesale Price Charger 12V 20A Battery Charger (QW-20A), 5kw WiFi Monitoring off Grid Solar Inverter with MPPT Solar Controller, 3kVA 24V 60A MPPT Solar Pure Sine Wave Power Inverter (QW-3kVA2460) and so on.

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Supplier Homepage Products Battery Charger 12v battery charger Wholesale Price Charger 12V 20A Battery Charger (QW-20A)

Wholesale Price Charger 12V 20A Battery Charger (QW-20A)

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Purchase Qty. / Reference FOB Price
10-99 Pieces US $28.99
100-499 Pieces US $26.99
500+ Pieces US $26
Port: Guangzhou, China
Production Capacity: 20000 Units/Month
Payment Terms: T/T, Western Union, Money Gram, In Cash
Rated Power: 360W
Charging Current: 20A
Input Voltage: 160~250V
Type: Lead-Acid Battery Charger
Charging Type: Electric Charger
Principle: 4-Stage Charge

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Basic Info

Model NO.: QW-20A
Charging Voltage: 12V
Charger Current: 20A
Display: Voltmeter
Three-Step Charge: Constant Current, Constant Voltage, Trickle Charge
Battery Type: Lead Acid Battery
Housing Case Color: Black
Size: 170*95*55mm
Brandname: Queenswing
Transport Package: Color Box/PCS
Specification: CE, Rohs, SGS
Origin: China
HS Code: 8504409990
Wholesale price charger 12V 20A battery charger (QW-20A)
The brief instruction:
1. The QW series lead acid battery charger is professional designed according to the power battery of electric vehicles equipment.
2. It use the advanced soft switch technology, with small size, convenientinst allation, high conversion efficiency, running fully loaded for a long time, stable output current, large capacity, high reliability, long life features etc.
3. With short circuited protect, low voltage protection, overheated protection function.
4. The long delay digital counter can ensure the battery form the constant voltage to the float charge reliably every time, avoid the lost control of battery heat caused by the high temperature.
5. Make the damage of battery drop to the loest caused by the dehydration and the polar plate vulcanize which are the two general problems of charger, MAD.

Technical Parameter:

Model No.
Input voltageAC220V+/-10%, 50hz
Rated voltage12V
Constant charge current10A+/-5%
Constant charge voltage14.5-14.8V
Floating voltage13.8V
Charge mode4-stage
12V/20A suitable battery current12V/130A-12V/400A
Ideal charging current= battery capacity(Ah)/10

Over-heat protection: When the temperature of charger shell over 85 degree, the charing current auto reduced to half of the orifinal current, when the temp. over 105 degree, the charger protective turn off, this moment no current input, auto recover charge when the temp. fall to about 80 degree.

Short-circuit protection: When the charger input happen to short-circuit, the charger input auto turn off the charge will charge again after restart.

Low-pressure protect: When the battery simple lattice lower than 1.4V, the charger protective turn off or unable to start to avoid the damage equipment when the battery doesn't match the charger nominal voltage.

4-stage charging:
Pre-charge: In order to protect the battery and extend its life, the battery's internal resistance is too large or voltage is too low because the discharged time is too long or it is not used for a long time, the charger will supply low output vurrent for the battery automatically. When voltage of the battery rises to the given voltage value, the charge mode will turn to constant current charge mode automatically.

Constant current: The charger supply constant charge current for the battery.

Constant voltage: Using the pulse width modulation (PWM) tech to control the charging current and output voltage of the charger which ensure the battery is charged fully and avoid over charged.

Floating charge mode: When the voltage of the battery is closing the value of the constant voltage mode, and the current cut down to the given current gradually, that is meant the battery power is full, then the pilot lam will turn green and the fan will stop working. The charger will turn the mode into floating charge mode automatically. At this moment, the battery can be stopped charge or kept on flating charge.

About us:
Guangzhou Queenswing Solar Energy Co. Ltd. Is a professional manufacturer and exporter of solar products including power inverter, solar charge controller, solar panel and solar battery in China. To provide high-quality product and considerate service is always our basic policy. We believe high quality creates business and progress is from improvement.

Main products:
Pure sine wave power inverter
Modified sine wave power inverter
UPS power inverter with charger
Car power inverter
Solar charge controller
Battery Charger
Solar panel
Solar battery

Our power inverter and solar products are exported to most global coutries and get good reputation because of our favorable quality and stable performance.

Payment Terms:
T/T, Western Union, Money Gram
Production arranged after receipt of payment.

Lead Time:
Sample order will be delivered within 7 working days.
Order quantity below 100PCS, delivery time is 7-15 working days.
Container order will be delivered within 15-30 working days.

Courier: FedEx, DHL, TNT, UPS, Aramex, EMS ect.
Forwarder: By sea / air or Customer designated

Contact us:
Different type offered:
12v-10a battery charger;
12v-20a battery charger;
12v-30a battery charger;
24v-10a battery charger;
24v-20a battery charger;
24v-30a battery charger;
Contact us:


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