How I Perform Battery Drain/Draw Testing

In this video I show how to accurately perform testing in order to find the root cause of the battery drain issue in today's vehicles.

[@jurehrovat4823]

One of the best parasitic drain measurement explanations video.

[@DTEAuto]

Glad it was helpful!

[@mikedavidson2117]

Excellent demonstration of how it should be done non intrusively

[@DTEAuto]

thanks for watching

[@JoelAutomotiveInaction]

Great 👍

[@DTEAuto]

Thank you 👍

[@sheerwillsurvival2064]

Excellent

[@DTEAuto]

Thanks for watching!

[@djosbun]

Excellent video, Sadel!

[@DTEAuto]

Appreciate it!

[@fastbagel]

Awesome to clarify the process into those steps, Could a fix for the customer be re wire the power source to key on power? Imagine it would be hard to fix otherwise leaving unplugged

[@DTEAuto]

It would be an option to explore for sure

[@papecheikhdiop8032]

Great as always, thanks

[@DTEAuto]

Thanks for watching!

[@MechanicTechnicianRepair]

Experience diagnosis master mi respect para ustes saludes noel matute felis ańos nuevo

[@DTEAuto]

Gracias Y feliz ano nuevo tambien!

[@mobicho4061]

Happy New Years, I wanna purchase an AMP Clamp. Do you know any named AMP Clamps that are good for checking the Parasitic Battery Drain? I know you’re using the SNAP ON AMP Clamp but that’s out of my budget range. Do you recommend any AMP Clamp that are budget friendly? I love your videos and thank you for the great content and keep up the good work. Have a great year.

[@DTEAuto]

I don't really have one to suggest, I would just search some reputable sellers or onlinie stores and maybe contact them and ask questions, also look at reviews. Try aeswave.com they have a selection and good support

[@sivucit]

Nice video. Some of Toyota has cartridge fuse do you have any advise on that.

[@DTEAuto]

it would take some work, but you could tap the power feed wire to the fuse box and the wire leaving the box for the specific leg of the fuse circuit in question

[@sivucit]

@ thanks. Power probe released DM300Auto that converts Millivolt to amps draw automatically. Not sure if that helps for faster diagnosis. If 99 percent of fuse has 0 millivolt then that tool is not that handy but if there many it might come handy. Any thoughts on that

[@ikusha84]

​@@sivucithow it can do conversion without knowing an internal resistance of the fuses?

[@sivucit]

@@ikusha84 it takes millivolt and convert it to amps. yes it does

[@ikusha84]

​@@sivucitit also needs to take resistance value, as per ohms law I=U/R. Each fuse with different current rating will have different resistance.

[@davepnola5322]

Nice but if you don’t have that nice diagnostic equipment, you can just use an analog volt meter put in the battery series and start pulling fuses 1 at a time … yep u might need 2 people but not 1000s of dollars in nice equipment…

[@mrblonde2013]

Good luck trying that on a newer car....250+ fuses spread out over 6 fuseboxes....😂😂😂 Scopes are not fancy, they are a necessity on todays vehicles, good luck trying to diag anything efficiently and accurately with stone age tools and methods.

[@adamapsitis6325]

Nothing wrong with using a multimeter to measure the current draw, but pulling fuses will wake up anything modern and you'll have a long wait each fuse you remove. Use the mV Voltage drop method shown, far more efficient.

[@mrblonde2013]

Also, a usable scope can now be had for less then $200...There really is no excuse for not having one, unless one is unwilling to learn and grow ones skills.

[@nelsonmelo4746]

Saludos desde paraguay bendiciones ingeniero

[@DTEAuto]

That method can only get you so far and it's not really suitable for today's vehicles including the "old" one I showed in the video. As others have stated, there's no way of diagnosing battery draws once they have so many modules and inputs/outputs to them, the 2 videos I mentioned in this video have been my hardest draws to date and both were figured out by using "fancy tools"