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SwissXC90 · Mar 17th, 2019, 15:51

Well, I just thought I'd do a google and I found CTEK document that states:

1. When connecting for the first time, the initial % is a loosely accurate number which shown more to let the user know that the unit is connected and beginning its "triage" of your battery.

2. The % you will see over the next days is an accumulation of charge and discharge factors gathered over time (among other secret calculations) that reports a percentage representing the true state of charge of your battery but not the immediately measured OCV (open circuit voltage) as OCV is not usually the true state of charge of a battery.

3. Accuracy will improve as more data about your battery is accumulated over time.

Which is exactly what I have observed

Mar 17th, 2019, 15:51	#4
SwissXC90 Premier Member Last Online: Mar 20th, 2024 18:26 Join Date: Jan 2016 Location: Cross Country	Well, I just thought I'd do a google and I found CTEK document that states: 1. When connecting for the first time, the initial % is a loosely accurate number which shown more to let the user know that the unit is connected and beginning its "triage" of your battery. 2. The % you will see over the next days is an accumulation of charge and discharge factors gathered over time (among other secret calculations) that reports a percentage representing the true state of charge of your battery but not the immediately measured OCV (open circuit voltage) as OCV is not usually the true state of charge of a battery. 3. Accuracy will improve as more data about your battery is accumulated over time. Which is exactly what I have observed __________________ XC90 R-Design MY2009, Black Sapphire Metallic. HP-Sound, RSE, Nav, Tel, ParkingCam, BLIS, ParkingHeater, RestHeat, Removable Towbar, Summer: CRATUS 20x8 on Pirelli Scorpion Zeros 255/45, Winter: NEPTUNE 17x7 on Continental WinterContact 4x4 235/65.