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Handheld black battery tester with small screen and clamps, 5.98 by 3.39 by 2.2 inches

ESTONE

ESTONE KW310 12V Battery Tester 100-2000 CCA

SKU CH-1QKK-5YJDG MPN KW310

Tests 12V batteries from 100 to 2000 CCA and runs ten OBDII diagnostic modes on vehicles from 1996 onward

  • Features7. Views freeze frame dataThe KONNWEI KW310 OBD2 / EOBD / CA
  • Height5.98 inch
  • Width3.39 inch
  • Length2.2 inch
  • Weight0.46 pounds
  • FitmentKONNWEI KW310 OBD2 Scanner Full OBDII Functions 10 Modes Aut
  • Tests 12 V batteries from 100 to 2000 CCA
  • Reads and clears engine fault codes on 1996+ vehicles
  • Shows live sensor data in digits and graphs
  • Checks O2 sensors and EVAP system with Mode 6 and Mode 8
  • Compact handheld size at 5.98 by 3.39 by 2.2 inches

Universal 12V Battery Analyzer

The ESTONE KW310 tests cranking and charging systems from 100 to 2000 CCA on cars, trucks, marine craft and SUVs. It also reads and clears check-engine codes through all ten OBDII modes on vehicles from 1996 onward. Live data streams and freeze-frame snapshots help pinpoint faults quickly. The handheld unit weighs .46 pounds and measures 5.98 by 3.39 by 2.2 inches.

Replaces Separate Load Tester and Code Reader

One tool covers both battery health checks and full engine diagnostics, removing the need to carry a dedicated load tester and a separate scan tool. The jump is worth it when a workshop or owner wants a single device for CCA verification, EVAP leak initiation, oxygen-sensor monitoring and I/M readiness confirmation. Buyers who need high-voltage hybrid battery analysis or heavy-duty commercial vehicle protocols are not served by this unit.

Plug-and-Play OBDII Connection

The analyzer draws power directly from the vehicle’s 12V OBDII port, so no external supply or batteries are required. Menus are navigated with four buttons and the colour screen; most users complete a full test cycle in under a minute. Common issues include loose connector pins on older ports and menu freeze when the ECU responds slowly, both resolved by reseating the plug or cycling the ignition.

Highlights

  • Tests 12 V batteries from 100 to 2000 CCA
  • Reads and clears engine fault codes on 1996+ vehicles
  • Shows live sensor data in digits and graphs
  • Checks O2 sensors and EVAP system with Mode 6 and Mode 8
  • Compact handheld size at 5.98 by 3.39 by 2.2 inches

Specifications

BrandKONNWEI
ModelKW310
Features7. Views freeze frame dataThe KONNWEI KW310 OBD2 / EOBD / CAN Car Diagnostic Scanner supports all 10 OBDII test modes on all OBDII compliant vehicles for a complete diagnosis. the KONNWEI KW310 is truly the ultimate in power and affordability, allowing users to do their jobs faster.
8. Displays monitor and I/M readiness status (emissions)
9. Reads live PCM datastream
10. Displays live O2 sensor test data
11. EVAP System test data
12. Live sensor data in text mode and graph mode (1996 and newer vehicles)
13. Reads, stores and playbacks live sensor data
14. Troubleshooter code tips gui
Height5.98 inch
Width3.39 inch
Length2.2 inch
Weight0.46 pounds
FitmentKONNWEI KW310 OBD2 Scanner Full OBDII Functions 10 Modes Automotive Engine Fault Code Reader Scan Tool for All 1996 and Newer Cars

Questions about this item

Will the KW310 fit in a 3.39 by 2.2 inch space?

The KW310 measures 3.39 inches wide and 2.2 inches long, so it fits that footprint.

What is the step people miss when connecting the KW310 to a 12V battery?

Clamp the red lead to positive and black to negative before powering on; reversing them prevents the test from starting.

When should the 30m polyimide tape supplied with the KW310 be replaced?

Replace the gold-finger tape when it shows discolouration, tears or loss of adhesion after high-temperature exposure.

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