The "Quick Test" (Option 1) asks for an amp hour value, but now I see under "Battery Test In Vehicle" it's asking for CCA. I'll give that a try, thank you! I'm not having any problems, just trying to figure out how the tester works.

 

Took me a few to get the feel for the menus. The first thing I did was go to their webpage and print out the manual. The little “booklet” that it comes with is impossible to read. I have only used it on a few flooded batteries for the boat before I put the back in for the season.

Bob

 

I need something different...the frickin squirrels are eating mine! Edit: is that for a Group 65 battery? For some reason the fit-checkers on websites states it won't work for my 7.3 gasser!

 

@kshoop1958 This is a great question, that hasn't been answered yet.

The expression "amp hour rating" alone is not enough to formulaically calculate amp hour rating without knowing if the rating is C20 (20 amp hour), or C10 (10 amp hour).

The Reserve Minute Capacity rating expressed by battery manufacturers is more consistently standardized at 25 amps... how many minutes a fully charged (12.77v) battery can produce 25 amps of current until the voltage drops to 10.5v.

In the case of the 775 CA version of the Walmart Everstart Platinum AGM battery, the Reserve Capacity is 150 minutes.

One commonly claimed formula for calculating Amp Hour Rating at C20 (20 amp hour rating) instructs to multiply the Reserve Capacity (150 minutes in this case) by 25 (the amp rating upon which reserve minute capacity is based) and divide the resulting product by 60, the number of minutes in an hour. That result yields 62.5 Amp Hours. Another formulaic method is to multiply the RC capacity by 0.4166, and 150 RC x 0.4166 = 62.5 AH.

Yet curiously, the 750 CCA version of Walmart Everstart Platinum AGM battery, which is not only 25 less CCA, also advertises a lower Reserve Capacity of only 120 minutes. Unlike the 775 CCA battery, the 750 CCA actually provides an Amp Hour specification on the battery itself, stated at 68 Amp Hours. This is what is interesting. The "Amp Hours" rating is not identified, even though a specification is given. Is the 68 Amp Hour rating spec based on C20? C10?

We have been comparing a 750 CCA battery with 120 RC and 68 AH specifications, with a 775 CCA batter with 150 RC and no AH identified, but where 62.5 AH has been calculated to derive C20 AH rating.

Hence, there is some ambiguity in establishing an accurate AH rating to enter into the Ancel BA101 battery tester.

@Zork I recall your post talking about how you threw away your 30+ year old ARBST battery tester. I still have both of mine, but I am now using a 9 year old Midtronics DSS-7000 tester, and the testing software only asks for battery chemistry and CCA.

I tested a new 775 Walmart Everstart Platinum AGM battery last night, that was manufactured in September 2025, and even while I entered 775 CCA, after the Midtronics DSS-7000 did its thing testing and analyzing the battery, it reported back a measured 820 CCA when the battery voltage was at 12.59 volts, at a temperature of 62°F... and asked me to charge the battery. So I charged it with a CTEK M25000 smart charger until it reached 12.75 v, and retested it again with the DSS-7000. The new report came back with a measured 800 CCA with battery voltage at 12.7v at 59°F.

Since you professed to be a battery nerd, I figured you'd appreciate the details, but believe that everyone else who has recently adopted the Walmart 775 CCA Everstart Platinum Battery will appreciate knowing that the 775 CCA advertised was in fact met and exceeded in measurement by a professional $2,500 battery analyzer.

 

Well, I'm definitely not a battery nerd, so that must be @Zork , but I do appreciate the detailed info! My question now is, how much affect would the amp hour rating have on results given by the Ancel tester? For example, I think the default value when you clip it onto the battery is 75, which is what I've been using, but it sounds like it actually might be low 60's. Sorry for not knowing the math, but how far off would 75 put me? I'm primarily using the tester to see if I've got obvious problems before I leave on long RV trips, and so far the results look fine (as expected on an almost new battery).

 

I knew the battery was replaced in my truck before I bought it but never paid attention. I looked at it after this thread and turns out previous owner went with a Super Start AGM battery. My truck sits often for a week or 2 at a time not running and have never had a battery issue the last 2.5yrs I've owned it. I was worried about going to AGM based on this thread as I didn't want issues with it sitting awhile and not doing a forscan change but its been fine the last few years so no worries from me lol.

 

It is hard to even speculate an answer without knowing the testing algorithm of the Ancel tester.

If the same math to calculate C20 amp hours (multiplying the Reserve Capacity in Minutes x 0.41666 constant; or alternatively multiplying the Reserve Capacity in Minutes x 25 hours and dividing the result by 60 minutes) that was used for the 775 CCA AGM Everstart Platinum with 150 RC minutes... were applied to the 750 CCA AGM Everstart Platinum with 120 RC minutes... the 750 CCA battery would be 50 amp hours.

Yet the 750 CCA battery is marketed at 68 amp hours, without identifying the duration of amp hour measurement. (20 hours? 10 hours?)

Unlike Amp Hours, the Reserve Capacity minute measurement is both standardized and provided by Walmart for both batteries, and one would think that a battery with 150 minutes of Reserve Capacity, and a higher CCA to boot, would have more ampacity than a battery with only 120 minutes of Reserve Capacity, which is lower by half an hour.

In years past, I recall battery marketers playing tricks on consumers with how Amp Hours were expressed, given that Amp Hour ratings have different durations of determination time.

It is interesting that Walmart's latest South Korea built 775 CCA version of their halo premium Everstart Platinum Group 65 AGM battery pointedly does not provide any Amp Hour specification at all... neither on the battery, nor on the website... whereas the previous Clarios built 750 CCA version of the Platinum Group 65 AGM battery not only stated an Amp Hour specification.... it stated what seems to be an improbably high number, without stating whether or not the number was 20 hour or 10 hour.

Critically, does Ancel clarify which amp hour rating, 20 hour or 10 hour, that their tester is asking you to input in order to test the battery?

I was going to suggest contacting Ancel to ask your question, but after looking at Ancel's website and reading their "About Us" page, it became quite clear that Ancel is nothing like Fluke, Midtronics, OTC, Hickock Instruments, or the like.

Ancel
Head Office
Room C02, Floor 2, Runfeng Industry Park, No.973 MinZhi Avenue, LongHua District, ShenZhen, GuangDong, 518000, China


"Exporting" (importing to the United States) price point products through Alibaba, eBay, and Amazon seems like a different "new world" business than what domestic companies like Fluke, Hickok, Midtronics, and the like have done for decades...designing, developing, manufacturing, and supporting the life cycle of instrumentation and diagnostic equipment.

Therefore, even while I am making the suggestion to contact Ancel, it isn't with very high expectations. Nevertheless, I still hope that you will receive a satisfying and informative answer that you can come back and share with this group of interested readers at FTE.

Ancel does not provide a phone number to call, but their website does show an email address that you might try.

 

Thanks again for the detailed answer and agreed, it would probably be a fool's errand to contact Ancel. Instead I'll run Ancel's "Quick Test" using various inputs for amp hour rating, and see what the difference is in the results. That should satisfy my curiosity, but I'll share the results here in case you're interested. Ancel does seem pretty casual about the amp hour value as you can here from their manual.

 

@kshoop1958

Ignore the commonly bandied about "math". Forget the popular "calculation."

No matter how many different sources of "AI" support that math, disregard them.

At least for now.

Enter 70 AH in your tester for the 775 CCA battery.

The reasoning for this suggestion, applicable to this specific battery, has been researched, but the journey is way too long to describe at present, until I have time to tally all the tangents and distill all the details into a more succinct and readable post, rather than a wall of text.

I was driven to come up with an answer to your question that would approach parity with the 750 CCA 120 RC battery specs, at 68 AH, and arrived at 70 AH for the 775 CCA battery 150 RC specs.

If I have time, I'll post more details, but since the goal of my effort was to answer your simple question, and reconcile the curious disparity that arose in so doing, it seemed better to cut to the chase, rather than story tell the ins and outs of the chase.

 

Ford also installed the thicker puffy type of battery blanket under the hoods of older, not so modern diesel trucks of a quarter of a century ago.

This is the battery blanket from my 2000 model year 7.3L PSD.

 

I don't have Forscan, just the BlueDriver app that plugs into the OBD2 port. Does it matter if you replace with AGMs and don't update in the truck's computer?

 

Many have done it without problem. The charging profile is a little different so IMO it is best to make the changes to maximize battery life.

Others will chime in. I’m sure.

Bob

 

Whoa!

Hold up, Wait a minute,
There's another brand in it!

When I saw @nychan 's post earlier, I noticed that it had a lot of great photos, so I quickly scan through all the photos first, in order to better understand the text when circling back to actually read the post, and apparently I got distracted by the BMS settings and battery blanket aspects of the post, and glossed over the battery photos at the beginning.

Scanning through this thread today, these battery photos lept off of the screen. As this is not the 775 CCA Hankook-AtlasBX manufactured Everstart Platinum AGM battery, but rather was the 750 CCA Everstart Platinum AGM battery, with a full width strap handle similar to the Clarios-Varta manufactured 750 CCA batteries purchased by @ATC Crazy , @chadstickpoindexter , and @longhaultransport , I quickly dismissed the 750 CCA battery shown in the quoted photo immediately above as the same.

But it isn't.

The Everstart Platinum AGM 750 CCA battery that nychan purchased and photographed was made in the USA by East Penn Manufacturing in Pennsylvania, the maker of the Deka brand battery.

When comparing the ribbing details of the full width strap handle, as well as the case top, between this 750 CCA battery versus the other 750 CCA batteries shown in the first couple of pages of this thread, one will see dramatic differences in details that otherwise escape notice if not looking for them.

So now we have three different manufacturers confirmed for Walmart's Everstart Platinum AGM Group 65 battery with a 4 year warranty.

Clarios-Varta (750 CCA)
East Penn (750 CCA)
Hankook-AtlasBX (775 CCA)

In 2029, we shall reconvene here and non-scientifically muse about whose Walmart Everstart Platinum AGM battery lasted the longest.

 

Good eye @Y2KW57

 

Cool battery thread! You miss things when you live under a 6.0L rock ....