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Handheld battery tester with colour screen and cable clamps

ESTONE

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

SKU CH-HHC9-C8D53 MPN KW650

Tests 6 V and 12 V batteries from 100 to 2000 CCA, checks starter and alternator, and shows health, charge and replacement advice on a colour screen

  • Fit typeKONNWEI KW650 6 V 12 V Car Battery Tester, 100-2000 CCA Batt
  • Key featuresKW650 Battery Load Tester Key Features 1. Strong Capacity: W
  • Overall height7.13 in (18.1 cm)
  • Overall width6.02 in (15.3 cm)
  • Overall length2.17 in (5.51 cm)
  • Product weight1.2 lb (0.54 kg)
  • Tests 6V and 12V batteries from 100 to 2200 CCA
  • Checks flooded, AGM flat plate, AGM spiral and gel types
  • Colour screen allows in-vehicle or out-of-vehicle testing
  • Supports CCA, BCI, CA, MCA, JIS, DIN, IEC, EN, SAE, GB standards
  • Shows SOH, SOC, CCA value, voltage, internal resistance with replace or recharge advice

6V 12V Battery Analyser 100-2000 CCA

The ESTONE KW650 tests 6V and 12V lead-acid batteries rated from 100 to 2000 CCA. It covers regular flooded, AGM flat plate, AGM spiral and gel types. The unit checks cranking and charging systems on cars, trucks, boats, motorcycles and lawn mowers. A colour screen shows results without removing the battery from the vehicle.

STM-32 Chip Delivers 99.5% Accuracy Under Load

An STM-32 processor returns test data in milliseconds with more than 99.5% accuracy referenced to Midtronics benchmarks. The analyser reports state of health, state of charge, CCA value, voltage and internal resistance. It then displays a clear Good, Recharge or Replace recommendation and flags bad cells directly. Polarity-reverse protection prevents damage during connection.

Upgrades From KW600 With Wider Range And Update

This model replaces the earlier KW600 by extending the test window to 2200 CCA ratings and adding firmware update support. The jump is worthwhile for workshops that service mixed 6V and 12V fleets or need the latest test standards including CCA, BCI, CA, MCA, JIS, DIN, IEC, EN, SAE and GB. Buyers who only test a single 12V car battery occasionally may not need the expanded range.

How it compares

Measured against everything we stock in Diagnostic Tools & RV Electronics, at today’s prices. Recalculated every night.

Price $46.99
Pricier than about 77% of the 432 comparable items (median $18.99).

Specifications

Product
Brand nameKONNWEI
Model nameKW650
Size & build
Overall height7.13 in (18.1 cm)
Overall width6.02 in (15.3 cm)
Overall length2.17 in (5.51 cm)
Product weight1.2 lb (0.54 kg)
Compatibility
Fit typeKONNWEI KW650 6 V 12 V Car Battery Tester, 100-2000 CCA Battery Load Tester Automotive Battery and Alternator Tester for Vehicles/Marine/Motorcycle/Lawn Mover

Questions about this item

Does the KW650 generate noticeable heat or fan noise during extended testing sessions?

The KW650 has no cooling fan and draws minimal power from the battery under test, so it runs silently and stays cool to the touch even during repeated cranking and charging checks.

What battery terminals or adapters must I already have to connect the KW650?

The unit comes with integrated clamps that fit standard top-post and side-post terminals on 6 V and 12 V batteries, so no extra cables or adapters are required.

Will the KW650 work reliably on an older vehicle with a 100 CCA battery and a basic alternator?

Yes — the tester covers 100–2000 CCA and evaluates starter draw and alternator output on 6 V and 12 V systems, giving health, charge and replacement advice for vintage and modern electrical systems alike.

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