GAOTek Portable Battery Internal Resistance Tester

This Battery Internal Resistance Tester is a multi-function test device which provides quick and accurate measurement of battery status and records multi-group battery voltage and resistance




GAOTek Portable Battery Internal Resistance Tester provides quick and accurate measurement of battery running status. It can show and record multi group battery voltage, resistance, etc. It also can precisely repair battery’s condition by powerful PC and data analyzing software. It provides a powerful PC software analysis for the battery’s performance, according to the data which is tested.

Key Features

  • Internal resistance and Voltage out of gauge alarm
  • User-exchangeable probes and
  • Clamp High precision online testing Powerful data management function
  • Handheld design, compact and lightweight.
  • Enhanced over pressure protecting function.
  • Self over recovery current protecting function.
  • Use the SOC chip to improve the tester stability.
  • Lithium battery and AC 100 V-240 V power supply
  • Low battery indication.
  • Automatic testing mode make user to test expediently.
  • Automatically switch the testing range between 0.000 m -99.999 m.
  • Store up to 999 groups battery parameter and 200 groups battery parameter setting.
  • USB flash memory or RS232 for Data transfer

Technical Specifications

Testing Range 0.000-20.000 V Internal resistance & Voltage

20.000-25.000 V Voltage only

Testing Voltage Precision ±0.2 % rdg ±6 dgt
Testing Internal Resistance Range 0.000 mΩ – 99.999 mΩ
Testing Internal Resistance Precision ±0.5 % rdg ± 6 dgt
Communication Mode RS232/USB
Display 320 x 240 LCD
Size 11 in x 4.1 in x 3.26 in
Power supply 10.8 V, 2000 mAh, rechargeable lithium battery
Humidity 90 % RH
Weight 2.65 lbs
Working Temperature 23 *F to -76 *F (-5 *C  to -60 *C)
Working Time Work for 8 hours continuously.
Memory Space Build-in 16 Mbit Flash memory

PC Software Management

    • Automatically analysis battery’s condition (Good, Suspect, Fail, Unserviceable).
    •  Building the history record database, describe the battery state curve.
    • Batteries contrastive analysis in the same battery pack.
    • All batteries are administrated by conditions

Conductance and Capacity

At present, lead acid stationary battery maintenance is applied to the check of Float voltage of battery. However, it has been found that voltage is irrelevant with capacity of battery, because voltage is only to show battery s basic parameters. Infact, Resistance Test is widely applied in daily battery maintenance instead of Voltage check. The resistance is reflection to internal parameters of battery with high precision worldwide. The conclusion about internal resistance and Capacity: when battery conductance is lower than 25 % of Initial Value (basic value), battery can’t be passed by the test of Capacity. When battery’s internal resistance is higher than 2 times of initial value, battery capacity will be lower 80 % of rated capacity.


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