Utopia Texas

Since there are electronics monitoring all the time in the background should one expect battery percentage drop over time even with the key not present? In other words will there be a percentage of battery loss over, for example 30 days, if the EQS is not used?

manitou202

The "vampire drain" is very low with the EQS. I have left ours unplugged for several days without the state of charge dropping. Compare this to a Tesla or our Rivian which can drop 1-2% per day.

My guess is after 30 days sitting unplugged the EQS might lose 1-2%. The only reason it could be higher is if it's extremely hot or cold outside so it uses energy to heat/cool the battery. Or if you were to constantly refresh the app on your phone so it keeps waking up the car.

ua549

A lithium battery will self-discharge by a few percent over time. A good rule of thumb is between 0.5% to 3.0% per month. The actual rate depends on ambient temperature.

jacec

Yes, phantom drain significantly lower on the EQS vs. my Tesla experiences.

mb_star

FYI. We were overseas for 25 days last month and the percentage dropped only 1% (75 to 74). I did check maybe a handful of times via the app while away. We are in the US northeast so temps ranged between 25F-55F while we were away.

finlayson

I've been overseas (with my new EQS SUV parked in my garage) for the past 6 weeks. Each day I've been monitoring my charge level remotely using the Mercedes Me Connect app. It started out at 37%, and stayed at exactly 37% for one week. Then, one day, it suddenly dropped from 37% to 34%. This worried me at first (because I knew I'd be gone for several more weeks). But fortunately, since then it stayed at exactly 34% the rest of the time. (And yes, the charge level gets updated from the car at least once each day.)

So I, too, can confirm that very little battery charge is lost while the EQS sits idle.