universal external laptop battery tester and charger with test charge discharge function

Price: 1
Brand Name: poloso
Model Number: RFNT3
Country/Region: China
Post Date: Mar 10,2012

Product Description: universal external laptop battery tester and charger with test charge discharge function

universal external laptop battery tester and charger with test charge discharge function



RFNT3 is a multi-function battery testing device, having the features below:

    with one channel, supporting one intelligent batterySupporting charge, discharge, test, capacity correction, charge / discharge 50% capacityLCD for displaying battery informationLED for indicating working statusWith charge-key, discharge-key, backlight-key and function-keyPre-charge, fast charge and constant voltage charge for charging stages and the variation range of the values of the constant current and the constant voltage is less than 1%Constant current for dischargingWith a USB port for connecting with computers, master machine can monitoring and control slave machine
Basic Parameters

Dimensions: 201 x 99 x 35 mm

Weight: 333g

Adapter    Input: AC 100 ~ 240 V   Output: DC 24V 2.65A

Display mode

Segment LCD with white backlight + LED in red and green

Discharging mode

Constant current discharge for double loads, inner load & external load

Charging mode

Constant current and constant voltages are the main mode. Active charge and pre-charge are available according to different battery voltage.






Charging current


There is a connection between current intensity and charge mode.


Function Introduction


Active, pre-charge, constant current and constant voltage are the stages of charging mode. The initial charging mode depends on the battery voltage, so active and pre-charge don't happen to every batteries.


Constant current discharge for double loads

Inner load: 0 ~ 1000mA, adjustable continuously via Battery Manager

External load: 0mA, 500mA, 1000mA, 1500mA, 2000mA, five gears with dip switches offered

Tester will stop discharging if one of the conditions below is met.

1)     Remaining capacity ≤ set value

2)     Voltage ≤ set value

3)     Current intensity reduce to zero


Testing time is 12 seconds and the purpose is to check both the charging and discharging performances. After finishing test, LED flickers with green color and LCD reports the test result.

Normal:              Test           OK            Shown on LCD

Abnormal:            Test           NG            Shown on LCD

Capacity Correction

The battery capacity value in the battery management chip will different from the actual capacity after a battery goes through many recycling cycles. It will affect the use of the battery when the difference reaches a certain degree. Capacity correction is to deep discharge a battery and then fully charge, which will correct the capacity value in the battery management chip

50% Capacity

CD50%: charge firstly, and then discharge to 50% capacity

DC50%: discharge firstly, and then charge to 50% capacity

Online Functions

Tester can be connected with master machine via a USB port. Users can monitor, control and set parameters via Battery Manager software in the master machine.


Battery information can be monitored via three windows.

    Home screen

   Battery bar and brief information can be read on home screen.

    Battery detail information window

   Show smart battery data in real time and the data can be saved and printed in image format.

3.  Battery graph windo Voltage, current and capacity are traced in curves.


Battery Manager can control slave machine completely. Right-click menu on the battery bar includes the related commands.


Users can set working parameters via set parameter window in Battery Manager.



Supplier Details:

Shenzhen Runfeng Elec. Tech. Co., Ltd.

Sales:Ms. Linda Jia

Contact Phone:86-755-83107575

Main Products:Charger

Business type:Manufacturer


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