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Black rectangular handheld battery tester with digital display and attached clamps

LUOM

LUOM KW650 6V 12V Battery Tester 100-2000 CCA

SKU CH-R0T0-351HR MPN KW650

Tests 6V and 12V batteries from 100 to 2000 CCA with digital conductance technology, showing health percentage and a clear Good, Recharge or Replace verdict in milliseconds

  • DC voltage12 V
  • Analog/digitalDigital
  • Energy Star statusEnergy Star Qualified
  • Input current rating15A
  • Maximum output current15A
  • Maximum ohms1M Ohms
  • Tests 6V and 12V batteries from 100 to 2000 CCA
  • Delivers over 99.5% accuracy via STM-32 chip
  • Shows health percentage and Good/Recharge/Replace advice
  • Works on batteries inside or outside the vehicle
  • UL/CSA certified with three-year after-sale service

6V 12V Battery Analyser

The LUOM KW650 is a digital tester for 6 V and 12 V lead-acid batteries rated from 100 to 2000 CCA. It suits technicians and DIY owners who need fast health checks on cars, boats, motorcycles or lawn equipment. The device reads voltage, internal resistance, cold-cranking amps and overall condition in milliseconds. Results show as Good, Recharge or Replace with a health percentage.

100-2000 CCA Test Range

Conductance technology driven by an STM-32 chip delivers over 99.5 % accuracy referenced to Midtronics benchmarks. The unit handles flooded, AGM flat-plate, AGM spiral and gel chemistries both in and out of the vehicle. Maximum input and output current is 15 A and resistance measurement reaches 1 M ohm. Batteries below 100 CCA or above 2000 CCA fall outside the calibrated range.

One-Click Readiness Key

A patented single-button function gives instant emissions-readiness status on all OBD II petrol and diesel vehicles. The tester measures 5.94 by 3.22 by 2.2 inches and runs on AAA cells. It includes a user manual and carries UL/CSA certification. Buyers who need integrated charging, printing or wireless logging should look elsewhere.

How it compares

Measured against everything we stock in Meters, Testers & Measuring Tools, at today’s prices. Recalculated every night.

Price $47.99
Typical for this category: the median of 3,030 items is $54.99.

Specifications

Product
Brand nameKonnwei
Model nameKW650
Color and finishBlack
Product typeMultifunction Testers
Performance
Measurement accuracy±6 mm
Power
DC voltage12 V
Input current rating15A
Maximum output current15A
Battery typeAAA battery
Size & build
Size or dimensions5.94 × 3.22 × 2.2 in
In the box
Number of items1× KONNWEI KW650 Car Tester
1× User Manual
1× We provide 3 years long after-sale service.
Environment & compliance
Energy Star statusEnergy Star Qualified
Operating noise-10 to +56 dB
Certifications and standardsUL/CSA
More details
Analog/digitalDigital
DC polarity indicatorYes
Maximum ohms1M Ohms
Commercial or home useCommercial

Questions about this item

Will the KW650 test the 12 V starter battery in my older boat without removing it?

Yes, the tester works on 6 V and 12 V batteries from 100 to 2000 CCA and can test them in or out of the vehicle, so the boat battery can stay connected.

How do I confirm the KW650 is giving reliable readings after I connect it?

The unit shows voltage, internal resistance, cold cranking amps, health percentage and charge status, then displays a clear Good, Recharge or Replace verdict backed by 99.5 % accuracy.

What comes in the box and do I need to buy anything else to start testing?

The set includes the KW650 tester, a user manual and the required AAA batteries, so no extra purchase is needed for basic battery testing.

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