This worked fairly well. Basically ignore everything it says ("good cell" "bad cell") and look at the CCA and internal resistance measurements. Use it on all modules and look for what is "normal" then look for any modules that lie outside of what is "normal." These modules are "somehow bad". Unfortunately it isn't specific enough to tell how bad, exactly, they might be 80% of normal capacity, they might be 15% ... but a nice start, and so easy to use! Also note that CCA values will change based on temperature so be aware...The other "failure case" it doesn't really detect by comparing CCA is leaking cells like if they drop overnight from 7.5 to 7.2, but you can just compare voltages and find those fairly easily anyway...

thanks

Excellent resource. I have searched many times for load testing and this was the best thing I have found. It worked wonderful. Thank You!

Greta! Info. I highly appreciated it

I swaped the bad module and re conected everything. Still getting red triangle and car won't start. Am I supposed to let it sit for a day so the battery levels even out?

This information Is outstanding based on all the other info out there. I have a 2010 Lexus GS 450H with a Panasonic 40 model pack hybrid battery, that I removed myself, testing cells they all were 7.6 7.7 with a volt meter. However I didn't know about this tool until watching this video. Every cell tested 100% good the internal resistance each cell was between 4.89 to 5.33 . I noticed the battery had been worked on before it was actually missing a busbar . So I ordered a replacement busbar that will be here today and I will put it on and put the hybrid battery back in the car..

Love it!

Genius idea, thanks

Nice!

What a great help! Found one more needing replaced. Imagine putting it all back together and finding that out the hard way! Thank you!!

So what should me ohms range be? Like 4.5 to 5.5 or what? Please let me know.

Unfortunately doesn't work that way. I used this Viking battery meter on my Prius 3rd generation cells and it showed 100% state of health, 7.95V on everyone and very low internal resistance. Even though my battery had a problem on block 13. I had to run a Dr. Prius app test to see it and disassemble the battery again to replace it.

I just replaced 3:54 all the blocks of my Lexus CT200h (same as prius.) After all done, the P3021 came up; it indicates that block 11 becomes weak. Any ideas? Do you think one of the blocks came bad? I refurbished all the blocks my self at once with new cylindrical ones. 😢

❤❤ Great tricks.. Thanks Mate

how do you know number 10 is bad, you said the OB2 said number 5 bad, but it is number10

The "Dutchman" said the entrance was in the shadow of Weavers Needle at 4:00 o' clock. He never said what day or which cardinal point. Figure those 2 things out and you might have a small chance!

What from the reader told you it was cell 5? I’ve got the p0a80 not sure which cell(s) though

Hi. In the video you test 2 different cells, a good one and a bad one. Are you saying if you used the Sperry on the 2nd cell you tested, the known "bad cell", it would have shown as "good" or "normal"? And the purpose of using the Viking is to show it is actually bad if under load? Thank you.

Thank you thank you❤ so much man🙏🏽

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When you replaced the bad module, did you have high voltage difference compared to the other modules? I replaced a module and showing 1.2 voltage difference and throws the "check hybrid system" p0a80 code on my odb2 reader. I need help.

I've always wanted to know what the top looks like.

I used the onwei tester and it come out as all the modules are bad. It also give you an option to choose the kind of battery, like agm, lithium and 4 others. Resistance was around 5.4 and 6 all across. I don't think this really work good for hybrid battery module.

I saw a video, way back, where they used a regular load tester on a newly assembled battery and went right along checking each module, disregarding polarity. The tester was one of the ones that's box shape w/ all the holes in the front and a meter above that. There was a switch at the bottom and it had short cables with large alligator clamps. HFT $20, I think the type was. 100 amp carbon pile. I'm sure there is no reading of internal resistance but it shows the draw=down over a few seconds. I wanted to know your opinion on all that. Specifically, does internal resistance correlate to voltage draw down?

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Chris, your test method was indeed creative. But are there devices more suitable for this kind of testing? The battery tester you used was originally designed to test the 12v starter battery, not for a 7.2v (nominal) module. Other than worrying about the reading would be inaccurate, I do not know how that "500A cold cranking amp" was tested, and I wouldn't attempt (until I watched your video) to use it, for fearing that it would draw too much amps from the battery module thus potentially damaging it.

won't the resistance feature on a battery charger measure this just as precisely? I'm guessing if anyone has yanked their battery, they are preparing to charge it with such a charger. My sky RC charger for example can measure resistance. Or is that inferior in some way?

Wow ! Thank you

thank you for this great video. What does this device do differently than simply using a multimeter to test resistance?

car stopped on the road 2 week ago. can the battery be reconditioned ? getting a dual charger/discharger.

thanks for the prompt reply..

i used the tester you used. results voltage abovr 7.55 all cells resistance 5.00 milli ohms, all 100 healthy. but says all cell have zero charge left. what is the solution.how to charge ?

Hi Cvedeler :) have done extensive testing on Toyota hybrid battery modules over the last decade, think i have tried everything imaginable over the years and i'm always keeping my eyes and ears out for new exciting ideas and easier/ better test equipment to make testing easier, but there's never any magic unfortunately I tried a couple different types of these "load testers" a couple years back with mixed results, i found its handy to know internal resistance and these testers definitely help to find the worst very dead modules (as you have done here) but it really struggles to see any difference between extremely good and mediocre modules, as-new modules with 6500mah capacity often test very much the same as mediocre modules with 2500mah For anyone considering this testing method for cars 2009 and newer, these testers only (sort of) work on the old style modules found in gen2 Prius, the newer style "low ir" modules found in gen3 prius, camry etc have very low resistance right to the end of their life, when they are absolutely dead as a nail the resistance might come up just a tiny bit, but not much! Its a fudge job without knowing capacity! there's just no magic. i.r. alone is just not enough information to build a reliable battery, you need to know the actual capacity of each and every module to do the job properly unless you are happy to keep going back in the pack every few months and play waKaMole We need more magic in this space, testing these batteries is too time consuming and just annoying really! so many hybrid cars on the road these days and still no cheap reliable easy way to test each module without spending days standing over hobby chargers waiting for numbers! Cheers from Australia :)

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Do I need permission to film this mountain with a drone?

Excellent! I actually gave up after trying to test cells and replaced a battery. I won't do that again!

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A question. Once reassembled did this help resolve the issue and if so in your experience what was the best internal resistance as a guide? Thanks for the video. A great idea by the way.

This is really helpful for future reference....apparently I had all I needed already😂

That was really helpful Thank you 🙏

silly question but is the 2012 Prius battery same layout?

Can I send it to Japan?

These are really great videos of central Arizona, thank you.

Great video. I will research this hike - surprised that the trail goes all the way to the top. That makes for some serious elevation gained in that hike.

Great video, thank you.

thanks for the info! really helps me out just diving into my battery problems

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2023?

Hey🎉

Noisy-ass drones aren't allowed in Forest Service wilderness areas