TOPDON BT20 battery tester review

I used the Topdon BT20 battery tester to check if the car battery in a 2020 Honda Odyssey needs to be replaced after a Low Battery warning. It will do a load test and can test if the car alternator is charging the battery correctly. With the accompanying app it makes this a one person job.
SUBSCRIBE / @watdahel
My Other Channel / @focusknob
Checkout my website @ www.watdahel.com
Buy at Amazon
TOPDON BT20 amzn.to/3DI9zO6
Battery Charger amzn.to/3MhF2vv
#Topdon #batterytester #cardiagnostics #cardiagnostic

[@LaVidaLocaHomie]

Great overview video ! Thanks for making this.

[@watdahel]

Glad you liked it!

[@ksavage681]

I just bought this. Thanks for the video.

[@henryfernandez2533]

Great video breakdown, Connected mines and display says LOW. Won't give me a voltage, Could the device be defective ?

[@watdahel]

battery probably needs charging

[@henryfernandez2533]

@@watdahel fluctuates between 12.5 to 14.5 amps on dash in engineering mode but read that Pontiac G8 GTs have this mechanism. Haven't been stranded yet SO thankfully all good.

[@AlaminSabazali]

you didn't explain properly about real time voltage. is there any link to real time voltage where it says set logging interval, 1second, 5 seconds, 10 seconds, 30 seconds, 1minute and 5 minutes

[@khaibui3575]

topdon bt20 vs konwei 208 which one better

[@watdahel]

If you want to use the app to see everything then go with topdon otherwise konwei shows everything on the device itself.

[@anidiotinaracingcar]

9:49 Pity you didn't show the available "parameters" But what does it do with that? It tries to interpret the voltage drop with the load, correlating a higher capacity with a lower admissible voltage drop?

[@watdahel]

I don't know the specifics of their algorithm in determining the health of a battery and there are different methods. Here's a quote on how this can be done: "Battery conductance testers work by sending a small current through the battery, and measuring its electrical resistance; they then use this information along with a mathematical model of the battery (, and any data the user may have input) to calculate the battery’s performance parameters... These tools are called ‘conductance’ testers because the inverse of resistance (one divided by the resistance value) is called conductance, and it is a much larger number than the resistance in the case of a reasonably-sized battery, which makes it easier to talk about."

[@brianl5029]

That’s what I say what the hell It don’t work on an iPhone

[@LaVidaLocaHomie]

Buy a cheap burner android for $10. If you read the amazon reviews you will see the company does offer a solution to IOS users.

[@familyman6978]

Absolute shite.

[@MrHectoring77]

Tanks Bro !!

[@watdahel]

Welcome!