Pg3ibew Posted February 28, 2017 at 12:57 AM Report Share Posted February 28, 2017 at 12:57 AM Ok, I have a question but I don't want to get too technical here.I am trying to figure out how many kilowatt hours I am using with my electric bill to charge my car?I do not want to buy a kilowatt meter for the power cord. Here is what I knowMy car is showing 770 Kwh used. Is this number accurate as to what I am drawing from my house?I only charge my car at home. So, there would be no need to deduct Kwh used somewhere else. I pay .23 per Kwh on my ConEd bill. Please give me some simple math. Thanks Quote Link to comment Share on other sites More sharing options...
bdginmo Posted February 28, 2017 at 02:32 AM Report Share Posted February 28, 2017 at 02:32 AM If you are using the 120v EVSE then use 1.43 as a rough multiplier to see what is pulled from the meter. 770 * 1.43 = 1101 kwh.. If you are using the 240v EVSE then use 1.25 as a rough multiplier to see what is pulled from the meter: 770 * 1.25 = 963 kwh. So if you are using 120v charging then you paid approximately 1101 * 0.23 = $253. At $0.23/kwh you may have a hard time beating good 'ole gasoline if fuel cost is a concern for you. Quote Link to comment Share on other sites More sharing options...
meyersnole Posted February 28, 2017 at 03:18 PM Report Share Posted February 28, 2017 at 03:18 PM (edited) Isn't some, a lot, of the kwh displayed as used generated from braking? Even more if you have a mixed commute using both the combustion engine (ICE) and battery? With gas at or near $2 and electric rates at .23/kwh I agree that its going to be hard to compete with gas on cost. Feeling very happy with my .11/kwh rate now. Some utilities offer plans with lower rates off hours, have you looked into that? If it raises your day rates to get the offset at night it probably is not worth it as the battery in this car is quite small. Edited February 28, 2017 at 03:20 PM by meyersnole Quote Link to comment Share on other sites More sharing options...
bdginmo Posted February 28, 2017 at 03:37 PM Report Share Posted February 28, 2017 at 03:37 PM (edited) Isn't some, a lot, of the kwh displayed as used generated from braking? Even more if you have a mixed commute using both the combustion engine (ICE) and battery? Regen braking and ICE charging subtracts from the kwh used while the throttle adds to it. At least that's how mine works. I have noticed that the computer does have a tendency to lose track of the kwh used in some cases and so is usually underestimating kwh a little bit. The charging efficiency of 120v and 240v are 72% and 82% respectively, but I constructed the multipliers 1.42 and 1.25 for 70% and 80% respectively to account for this underestimation of kwh used. Edited February 28, 2017 at 03:37 PM by bdginmo Pg3ibew 1 Quote Link to comment Share on other sites More sharing options...
Pg3ibew Posted March 1, 2017 at 12:15 AM Author Report Share Posted March 1, 2017 at 12:15 AM (edited) Hey guys thanks for the help. I did some serious math on a my Con Ed Bills. It seems ALL Total, I am at .21 cents per Khr.Con Ed in NYC offers ZERO rebates. They SUCK!!! LOLAs far as gas vs. EV. Even if I am at break EVEN, I still prefer the EV. I ordered a Kwh Meter. I am installing it this weekend to get an ACCURATE Kwh Measurement moving forward. On the plus side. I am Averaging 145 MPGe over the 3500 miles I put on the car. Edited March 1, 2017 at 01:11 AM by Pg3ibew Quote Link to comment Share on other sites More sharing options...
bdginmo Posted March 1, 2017 at 03:54 PM Report Share Posted March 1, 2017 at 03:54 PM Hey guys thanks for the help. I did some serious math on a my Con Ed Bills. It seems ALL Total, I am at .21 cents per Khr.Con Ed in NYC offers ZERO rebates. They SUCK!!! LOLAs far as gas vs. EV. Even if I am at break EVEN, I still prefer the EV. I ordered a Kwh Meter. I am installing it this weekend to get an ACCURATE Kwh Measurement moving forward. On the plus side. I am Averaging 145 MPGe over the 3500 miles I put on the car. Which meter did you get? Quote Link to comment Share on other sites More sharing options...
murphy Posted March 1, 2017 at 07:33 PM Report Share Posted March 1, 2017 at 07:33 PM Which meter did you get?I use this one on 240 volts. http://www.ekmmetering.com/basic-kwh-meter-100a-120-240-volt-3-wire-60hz-ekm-25ids.html They also have a 120 volt version. Quote Link to comment Share on other sites More sharing options...
Pg3ibew Posted March 2, 2017 at 12:03 AM Author Report Share Posted March 2, 2017 at 12:03 AM Which meter did you get?https://www.amazon.com/gp/product/B01AN9AQ24/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1 26 bucks on amazon Quote Link to comment Share on other sites More sharing options...
bdginmo Posted March 2, 2017 at 04:36 AM Report Share Posted March 2, 2017 at 04:36 AM I use this one on 240 volts. http://www.ekmmetering.com/basic-kwh-meter-100a-120-240-volt-3-wire-60hz-ekm-25ids.html They also have a 120 volt version. I've heard good things about this one. https://www.amazon.com/gp/product/B01AN9AQ24/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1 26 bucks on amazon Let us know how it works. The product description is annoying though. It says it is rated for 220v. In the US residential voltage is 120/240v. According to the comments on Amazon it should work fine on 240v though. It has screws that secure the wire and puncture it to power the device and get a voltage reading so it should be pretty accurate. Quote Link to comment Share on other sites More sharing options...
Pg3ibew Posted March 3, 2017 at 01:44 AM Author Report Share Posted March 3, 2017 at 01:44 AM I've heard good things about this one. Let us know how it works. The product description is annoying though. It says it is rated for 220v. In the US residential voltage is 120/240v. According to the comments on Amazon it should work fine on 240v though. It has screws that secure the wire and puncture it to power the device and get a voltage reading so it should be pretty accurate.Being an electrician, I can tell you it will work with 220 or 240. I plan on doing it over the weekend. If I get some time. LOL bdginmo 1 Quote Link to comment Share on other sites More sharing options...
Pg3ibew Posted March 5, 2017 at 11:16 PM Author Report Share Posted March 5, 2017 at 11:16 PM FYI!!! Kwh meter installed and working well. Of course though, nothing I do goes off without some sort of problem. LOL. The batteries were dead on my 20 year old Battery drill. I figured I would charge them as I prepped my work. I only had to make 2 holes in plastic boxes and figured I would only need about 15 minutes of charge. Well, the charger went bad. After much cursing and swearing, I had to borrow one from my neighbor. Even with the battery issues on my drill, I was done in about an hour and a half. Quote Link to comment Share on other sites More sharing options...
bdginmo Posted March 6, 2017 at 12:25 AM Report Share Posted March 6, 2017 at 12:25 AM FYI!!! Kwh meter installed and working well. Of course though, nothing I do goes off without some sort of problem. LOL. The batteries were dead on my 20 year old Battery drill. I figured I would charge them as I prepped my work. I only had to make 2 holes in plastic boxes and figured I would only need about 15 minutes of charge. Well, the charger went bad. After much cursing and swearing, I had to borrow one from my neighbor. Even with the battery issues on my drill, I was done in about an hour and a half. Nice! How many kwh are getting recorded during a full charge? Quote Link to comment Share on other sites More sharing options...
Pg3ibew Posted March 6, 2017 at 02:07 AM Author Report Share Posted March 6, 2017 at 02:07 AM Nice! How many kwh are getting recorded during a full charge?I Haven't had to fully charge the car yet from fully depleted batteries. I charged it twice yesterday. Didn't go out today. Once charge yesterday from about 50 % and one charge last night from about 65 %. The Kwh meter is reading 6.8 Kwh. I am assuming it will take 7.7Kwh for a full charge. I will run the batteries down tomorrow before I charge it. See what kind of reading I get. Quote Link to comment Share on other sites More sharing options...
meyersnole Posted March 6, 2017 at 09:13 PM Report Share Posted March 6, 2017 at 09:13 PM (edited) I am assuming it will take 7.7Kwh for a full charge. The battery is never allowed to completely discharge or charge. Off the top of my head about 5.4 Kwh is a "full" charge (when the car reports 0%). Temperature and battery degradation will impact that number. You will also lose some energy in efficiency, maybe that is where you got the 7.7 number... see http://www.fordfusionenergiforum.com/topic/4675-electric-usage/?p=28372(bdginmo's post for detail) Edited March 6, 2017 at 09:17 PM by meyersnole Pg3ibew and bdginmo 2 Quote Link to comment Share on other sites More sharing options...
bdginmo Posted March 7, 2017 at 12:26 AM Report Share Posted March 7, 2017 at 12:26 AM The charging efficiency is somewhere in the 0.72-0.75 range on 120v depending on who you ask. 5.4 kwh to 0% is a good estimation of the like-new capacity. I actually got 5.5 kwh this morning on my drive to work. You'll get a few more tenths until the ICE kicks on and the hybrid battery gauge is at ~50%. Quote Link to comment Share on other sites More sharing options...
Pg3ibew Posted March 7, 2017 at 12:52 AM Author Report Share Posted March 7, 2017 at 12:52 AM Ok Kids. Here is what I got.I ran the car batteries down to Zero today. I plugged in the car at 3:15 pm and my Kwh Meter read 6.8.2 hours and 15 minutes later, I got a text from my ford mobile app that my car was fully charged. I went down and read my Kwh and it was 14.1. It appears it took 7.3 Kwh to fully charge. Quote Link to comment Share on other sites More sharing options...
bdginmo Posted March 7, 2017 at 02:05 AM Report Share Posted March 7, 2017 at 02:05 AM Ok Kids. Here is what I got.I ran the car batteries down to Zero today. I plugged in the car at 3:15 pm and my Kwh Meter read 6.8.2 hours and 15 minutes later, I got a text from my ford mobile app that my car was fully charged. I went down and read my Kwh and it was 14.1. It appears it took 7.3 Kwh to fully charge. Oh...yeah...you're using 240v right? The charging efficiency is higher at about 0.80 on 240v. 7.3 kwh sounds about right. How many amps was it pulling? The last time I checked mine it was ~14A @ 239v. Quote Link to comment Share on other sites More sharing options...
Pg3ibew Posted March 7, 2017 at 02:37 AM Author Report Share Posted March 7, 2017 at 02:37 AM Oh...yeah...you're using 240v right? The charging efficiency is higher at about 0.80 on 240v. 7.3 kwh sounds about right. How many amps was it pulling? The last time I checked mine it was ~14A @ 239v.240V yes. I didn't amprobe it,I have just been lazy. Maybe over the weekend I will throw an amprobe on it. Quote Link to comment Share on other sites More sharing options...
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