Harbor Freight Tools


100 Amp, 6/12V Battery Load Tester

Use this battery load tester to diagnose your vehicle's entire charging system

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Fast and easy to use, this battery load tester checks your vehicle's charging system under working conditions. This load tester takes the guesswork out of electrical diagnosis, making it easy to pinpoint charging system failures.

  • Test complete charging system including alternator, regulator, and battery. Also tests starter motor for excessive draw.
  • For use with 6 volt or 12 volt systems
  • Color-coded voltage meter for easy reading
  • Heavy duty steel case with enamel finish
  • Vinyl dipped steel clamps with copper plated jaws
  • Heavy duty CCA wire

61747, 90636, 69888, 61945
Starting current (amps)
Accessories Included
heavy duty battery clips, carrying handle
Amperage (amps)
Cable length
16-3/4 in.
Product Height
2-1/8 in.
Product Length
9-5/8 in.
Product Weight
2 lb.
Product Width
3-3/4 in.
Shipping Weight
2.30 lb.
Note: Specifications are approximate and subject to change

We guarantee this product to be free from defects in materials and workmanship 90 days from the date of purchase. Limitations apply.