Maintainer comparison

Justin Mobile Technician Herriman, Utah Posted   Latest  

In an earlier thread it was asked if anyone had scoped the output of a certain maintainer used for programming. I captured these off the two maintainers I own. I used to have a Schumacher but it failed me and I was very disappointed with their service. I don't recommend that brand. BTW the snapon is made by Schumacher. I use these to program regularly although I will admit I grab the PowerMax more. I like the handle, voltage control and cables better. The IOTA has no voltage control. Some units have an option of a two voltages, this one does not. It's full 14.2 or nothing. Feel free to add your own captures of different maintainers you use. Keep in mind that battery condition as well as connections will affect the performance. These two I share are both on the same vehicle/battery with the same loads applied. Your results may vary. 

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Phillip Diagnostician
Anchorage, Alaska
Phillip Default
 

If you don't mind me asking. Where was the wave form captured. The battery? DLC connector?

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Justin Mobile Technician
Herriman, Utah
Justin Default
 

Both were captured at the battery cable clamp. Maintainer was also connected the same point.

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Steven Mechanic
Spokane, Washington
Steven Default
 

My experience with Schumacher battery chargers has been the same. They seem to be the biggest company that sells battery chargers, but most of their products just aren't that great.

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Justin Mobile Technician
Herriman, Utah
Justin Default
 

Here is another one I know is out on the market now. Does anyone have any experience with this unit?

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Scott Manager
Claremont, California
Scott Default
 

Hi Justin, I have one of those in the shop and have used it multiple times before producing a video review for PTEN. Within the video I shared a comparison scope capture of it and a popular brand that is widely used in dealerships. The unit is well made and with very nice cables and clamps. I plan to continue testing this unit out and will provide honest feedback regardless of performance.

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Justin Mobile Technician
Herriman, Utah
Justin Default
 

Would you mind sharing captures of the voltage on that unit?

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Scott Owner/Technician
Claremont, California
Scott Default
 

Hi Justin, here are a few fresh samples from a vehicle with a marginal battery. Maintainer Mode [Loads on] + Data File Charge Mode + Data File Here's the data after battery replacement: Maintainer Mode [Loads on New Battery] + Data File Charge Mode + Data File [New Battery]

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Justin Mobile Technician
Herriman, Utah
Justin Default
 

Thanks Scott. It looks like it’s a good option. I would consider the maintainer numbers to be on the better side of the maintainers I have seen. Even the charge mode isn’t so bad.

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Brian Manager
Ann Arbor, Michigan
Brian Default
 

We've tested both. Drew uses the iota DLS90 in RAP2 and we have had very high success with several thousand flashes per month. There is a jumper for a single voltage adjustment. The other one you pictured (powermax) has mugh higher AC ripple but only appears when you are over 60 amps.

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Nelson Manager
Huntington Beach, California
Nelson Default
 

Thank you Justin. I have had a Schumacher INC-700a for 7 years now and the initial build quality was atrocious. The paint was chipping so i returned it and asked for another. The replacement had the same issue! Also, the charge battery setting was extremely glitchy. It would sometimes sweep charging voltage from 13v - 15.9v with no rhyme or reason. I only use it in programming mode which i…

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Tanner Instructor
Wellford, South Carolina
Tanner Default
   

Just wanted to add some files of another charger as well. This is from a Cornwell Turbo Charger Plus which is a rebadged Associated ESS6008.diag​.​net/file/f52efum17…diag​.​net/file/f2r8es259…diag​.​net/file/f62ogjx80…diag​.​net/file/f6vatu79g…

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Tanner Instructor
Wellford, South Carolina
Tanner Default
 

Now the same test done with the Pro Logix charger. I added a third channel like you guys did for your tests. I only saved the loaded capture since nothing really changed loaded to unloaded, its unbelievably clean in comparison to the cornwell I have been using. The second picture is of me turning the lights on and the maintainer reacting.

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