I know and hear that in order to extend/preserve the battery life that we should always keep the charge between 20-80%. I been doing that but I find that I have to go charge every 4-5 days (which is a bit annoying as I used to only pump gas 1 a week and when i go pump i am half tank full)

how often do you guys charge? and what percentage do you follow? 20-80? or 20-100?

i was thinking about following a 15-85% range but i wondered if that would affect the battery life etc etc. Any thoughts anyone ?

 

If you don't have a home L2 charger than definitely install one. Lot of cities have rebates on top of the federal tax rebate as well. Then just plugin when you want. Plus constantly using L3 fast charging is not good for the long term battery health.

I play it by ear. I use the 2x rule meaning that I can drive safely 2x the amount of charge. So if I am at 30% when I pull into the garage but I know I a 60mi+ of driving in front of me the next day, I will just plug in to be safe. In city driving I charge up to 80% using the ECO mode and on our of town trips I use DC L3 fast charging up to 100% to minimize charging stops.

I have installed the Chargpoint home charger and it works perfectly.

 

[QUOTE=abhansali;8791768 ....on out of town trips I use DC L3 fast charging up to 100% to minimize charging stops.

[/QUOTE]

Charging to 100% on trips may minimize the number of charging stops, but It will probably increase the total charging time since the rate of charge above 85% SoC is very slow. Staying at hotels with L2 chargers is a good way to maximize the range on the first leg of your trip the next day.

 

yeah i hear you ...i am definitely planning to get the home L2 charger .... but while we all have the Mercedes 2 year free charge it would be a waste to use home power when you get free electricity? albeit its more painful having to sit there. My wife and i have a routine now ..we bring our ipads out with us and pack dinner to charge+netflix and dine in the car while charging ....pretty sad right !

my main goal here is to reduce the number of times i have to go to the charger ....its likely that since I got the EQS ...i just can't stop driving it because its so nice to drive it. Can you believe it i get people honking at me at the lights to talk to me about the car asking how much i like it. Whenever we are at chargers people admire it more than say the Lucid because i guess not many are on to the Lucid brand.

I actually had a tesla y owner look at the eqs enviously. He was asking me how luxurious it was ..and i said man ...i can sleep in this thing comfortably. An the ride of course is much smoother than the tesla.

Anyways i digress ....i am thinking about maintaining 15% to 85% charge. Go charge when i am down to 15-20% and charge up to 85% when i do to see if the extra 10% helps me make it through the week

 

With the lack of non Tesla chargers on the road I would have not bought a EV if I couldn’t perform most of my charging at home. I have 6500 miles on my 580 SUV and have never had to charge on the road. Have a level 2 at home and at our country house. I have plenty of spare time but prefer not to use it in a parking lot while I can be doing things I feel are more important to me.

 

I think it's more how long you stay at a high or low state of charge. If you charge right away when you get to 15% and drive it right after a 85% charge it shouldn't have any real effect. Besides there's some buffer anyways. Don't know about the EQS but my 90.6 kWh "usable" EQE is really a 100 kWh battery pack. Which makes the math easy for me. That's a 9.4% buffer. Though I'm not sure that's divided evenly between top and bottom. But anywho...

 

Is electricity that expensive in Florida?
True, you can save on some electricity charges by taking advantage of the free charging.
But for me, Time is money. The amount of time you need to spend charging at fast charger vs at home is substantial when you add it up.
Say it takes 30min (most likely more when including travel to and from the charger, pack dinner etc), and you charge once a week, that would mean 25 hours per year and 50+ hours of your life for 2 years!

Just get a L2 charger, relax at home, and get your 50 hours of life back.

 

Only 2 more points I would make

1. DC charging is worse for the battery even though there is debate about how much worse it actually is to constantly fast charge. If you plan on fast charging only for 2 yrs that may have a larger degradation of the battery.

2. I believe the current federal tax rebate for installing an l2 charger is 30% of the price of charger + install. Plus your local city and utility company may have additional rebates. But some of these have time limits on when you must install from when you bought the car. So take advantage before the rebates go away because then whatever you may have saved in the 2yrs you will lose because you missed out on tax credits and rebates.
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Rates where I am are about $0.30 for tier 1, $0.40 tier 2, and $0.50 tier 3.

I charge ~50kw a day (long commute) and that already puts me almost into tier 3 range from just charging.

When I used to have free supercharging, I would use what I would have paid in electricity to pay for ice cream with the wife and go for a little walk.

 

Same here. I have L2 at home and have not used a public charger yet. In fact I was thinking of going to one soon just to test it out and make sure they work as advertised. As far as batt % I run 35-80. I have to charge twice a week.

 

i agree with you all on the L2 home charging ... i am actually in the midst of moving into a new house ( staying at an apartment right now) once I am there I will have the charger installed by Qmerit. I assume that everyone went with the ChargePoint charger and installed a high voltage circuit? any of you have problems with the HOA about installing this in your garage ?

yes time wasted sitting at a charging station !

on the battery charge range ...i am going to try to wait till 15% to charge and charge up to 85% sadly the app or system does not allow me to set the max charge at 85 only 80 or 90.

 

No ChargePoint for me - the deal breaker is the lack of Power Sharing.
Having power sharing would allow me to install a second charger without another expensive wiring to the panel.

 

what do you recommend ?

 

I'd recommend Juicebox.

I've had mine for almost 6 years (crazy how time flies). Used daily with no problems.

 

I am having the same issue. I drive a lot. I am keeping the range between 30 to 80% so I am only getting 50% which is around 140 miles or so. Luckily I do get free charging (L2) whenever I go to office. I am definitely feeling that pain and planning to install L2 charing at home soon. We have solar panel, over generating the power so we will be ok.

 

yeah thats a funny thing you are so right .... in my mind when i got the EQS i was like yay!!! 305 miles of range ... but because we are advised to keep it between 20-80% charge our usable range is 60% of 305 which is about 180 miles. I do about 30-40 miles when i am driving everyday and that makes me charge ever 4-5 days

side note: anyone know if there is a way to see what your daily drive usage is in milles or kw ? is there an app or something to track this?

 

It’s in your Mercedes Me app under trip data..

 

The Mercedes Me app shows the consumption in terms of miles per kWh. I usually get 2.5mpkWh which translates to (2.5 x 108.4 kWh battery size) = 271 mile range. To get promised 285 miles, you should be getting above 2.6mpkWh (a quick way to remember). Unfortunately none of the car screens show the consumption in this pattern which is very confusing.

In the driver's display, you can see metrics reported as xxx Wh per mile. Easy way to calculate optimum use of battery is, if it is saying 380 Wh per mile or below (this means you will get 285 miles on full charge).

I really wish they stuck with one metrics on both Mercedes Me app and the car display but I figured out this is the easiest way for me to quick assess my driving range.

 

I had my electrician install this for me on a RV post and it works very convenient for my wife’s Audi and my EQS, no need to go charge anywhere for the most part unless we’re traveling and if we do that’s using EA grid and Marriott destination that has a L2 charger

 

The vast majority of folks on this forum will only keep their EQS for 3-4 years, maybe even a shorter time, and then move on to the most recent offering so all the hand ringing over a battery with a 10 year warranty is not necessary. For daily use I have my percentages set to 20-80 and I plug in every day when I get home and forget about it. Easy Peasy….

 

I charge to 100% and don’t worry about it. The reality is that most if not all of us will not own the car long enough for it to make a difference.
To further reduce range by charging to 80% and/or planning my day/week driving and charging strategy doesn’t make sense to me.
My time is more valuable than that. If you can afford an EQS I bet your time is as well.

 

I'll probably keep my new laptop longer than my new EV... Intel i9 with nVidia 4070 on a 240 Hz 17" screen.

 

Right. And you probably charge your laptop to 80%, I’m sure

 

Yep, my new laptop has a setting for the Battery Charge Limit. It is set at 80%. No such option in my previous laptop.

 

I think it really depends how you use your vehicle. I actually have my MSI laptop set to 60% max charge because I use it as a portable desktop and it stays plugged in almost all the time. On the other hand, I know I'll wake up and drive to McDonalds before my EV fully charges so why not set it to 100% max. If I sleep in late the cells will get balanced and my max range estimate might even go up when the BMS recalculates. It's the amount of time spent at high/low states of charge that's the real killer. I honestly don't think I've experience any degradation at all after one year.