Desulfating AGM battery

[Andy B]

I have the original battery in my 2023 Expy Limited SPP. My NOCO Genius charger has a desulfate setting. So I have questions.

1) Is desulfating a good thing for AGM batteries? (This is my first AGM equipped vehicle).

2) Should I connect the charger directly to the battery (bypassing the BMS) to spare the BMS sensor the desulfating signals? (or in case the sensor attenuates them somehow) ?

Thanks in advance.

 

[ranger22]

You can desulfate AGM no problem. I’d go directly to battery if it was me, but I have no specific information to back it up. Just doing what I’ve done.

 

[Danm355]

I have the original battery in my 2023 Expy Limited SPP. My NOCO Genius charger has a desulfate setting. So I have questions.

1) Is desulfating a good thing for AGM batteries? (This is my first AGM equipped vehicle).

2) Should I connect the charger directly to the battery (bypassing the BMS) to spare the BMS sensor the desulfating signals? (or in case the sensor attenuates them somehow) ?

Thanks in advance.

I'm surprised you have the original battery. I've gone through 4 batteries on my 2022 Expedition Platinum. Ford paid for them all so after the warranty I put in a new DieHard battery which is great.

 

[Andy B]

I'm surprised you have the original battery. I've gone through 4 batteries on my 2022 Expedition Platinum. Ford paid for them all so after the warranty I put in a new DieHard battery which is great.

Yeah, in hindsight its probably been failing for a while but at this point I am past warranty.

My driving habits (how often, how far, etc) are VERY consistent and I noticed the truck going in to low power mode more often (updates failing, no animation on the screen when opening the door, etc). I replaced it and see a huge improvement. Now it works like it used to.

I just wish if the computer KNOWS it needs to conserve power that it would freaking TELL ME instead of masking the issue.

 

[DieselMonk]

Whatever you do with Desulfating Battery… UNHOOK the battery totally from the car before you desulfate.
What the NOCO does is it puts more voltage like 16V- 16.5V out and slightly pulses the battery for a specific time. This feature is great and used it a few times.

Here is my prediction. You run that desulfation mode with your NOCO on that H6 battery, you will find that there hasn’t anything changed in capacity.
All I do is charge it fully 2-3 times and call it good.