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Handheld black battery tester with screen and clamps

VDIAGTOOL BT500 6V 12V 24V Battery Load Tester

SKU CH-2CB6-AV3GA

Tests 6V, 12V and 24V batteries plus cranking and charging systems with no external power needed

  • Team affiliation1 Piece
  • Key featuresVDIAGTOOL BT500 car battery tester*1, Battery Test, Cranking
  • Overall height6.45 L x 3.35 W x 0.96 H inches
  • Overall width6.45 L x 3.35 W x 0.96 H inches
  • Overall length6.45 L x 3.35 W x 0.96 H inches
  • Product typeBattery load tester 12v automotive alternator tester
  • Tests 6 V 12 V 24 V batteries for wide vehicle coverage
  • Measures up to 3000 CCA giving accurate health data
  • Powers itself from the battery under test so no external supply needed
  • Checks cranking and charging systems to pinpoint no-start faults
  • Compact 6.45 x 3.35 x .96 in design fits in any tool kit

What the BT500 battery tester does

The BT500 is a handheld load tester that checks 6 V, 12 V and 24 V batteries rated from 5 to 3000 CCA. It works with regular flooded, AGM flat plate, AGM spiral, GEL and EFB types. The tool measures voltage, internal resistance, state of health and state of charge without needing its own power source. It also runs cranking and charging system tests to help separate a weak battery from a failing alternator. It is not suitable for lithium, deep-cycle or golf-cart batteries.

Check your battery type and voltage before ordering

Confirm the battery you plan to test is a 6 V, 12 V or 24 V lead-acid unit of the supported chemistries. The tester draws its operating power from the battery under test, so the battery must retain enough voltage to run the unit. Verify the CCA rating falls within the 5 to 3000 CCA range. If your application uses lithium, deep-cycle or golf-cart batteries, this tester will not provide valid results.

Thermals noise and power draw in normal use

The tester is powered entirely by the battery being tested, so it adds no load to the vehicle electrical system beyond the brief test pulses. No internal fan or active cooling is present, so operation is silent. The compact 6.45 by 3.35 by 0.96 inch housing stays at ambient temperature during typical use. Because it consumes only the tiny current needed for measurement, it does not drain a healthy battery during testing.

How it compares

Measured against everything we stock in Multimeters & Electrical Testers, at today’s prices. Recalculated every night.

Price $57.99
Pricier than about 81% of the 971 comparable items (median $30.99).

Specifications

Product
Brand nameVDIAGTOOL
Product typeBattery load tester 12v automotive alternator tester
Size & build
Overall height6.45 L x 3.35 W x 0.96 H inches
Overall width6.45 L x 3.35 W x 0.96 H inches
Overall length6.45 L x 3.35 W x 0.96 H inches
More details
Team affiliation1 Piece

Questions about this item

What comes in the box with the BT500 and is anything else needed?

The package includes the BT500 battery load tester. It is powered by the battery under test, so no separate charger or power supply is required.

Which battery voltages and types does the BT500 support?

It tests 6V, 12V and 24V batteries including regular flooded, AGM flat plate, AGM spiral, GEL and EFB. Lithium, deep-cycle and golf-cart batteries are not supported.

What does the 5-3000 CCA range mean when I test a battery on my vehicle?

The tester can measure cold-cranking amps from 5 up to 3000 CCA, covering motorcycles, cars, trucks and larger 24 V systems, and reports State of Health and State of Charge.

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