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Can an OBD2 tester do a battery load test?

Motor Vehicle Maintenance & Repair Asked on April 29, 2021

This Autophix device device was suggested by a review as the best of five battery testers. The text implied that includes testing cranking amps. But it can only connect to the computer—has no way to connect to the battery.

Can I actually use it to rule out the battery for an RV not starting?

One Answer

It cannot do a battery load test. If it could don't use it. The wires to the OBD ll port can't handle it. In theory it might be able to do a battery cunductive test, but in my opinion, even if it could it would definitely be an unreliable test. Best (and as far as I'm concerned only) way to test a battery is at the battery.

Answered by Jupiter on April 29, 2021

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