Brammo Owners Forum
Brammo Enertia Discussion => Brammo Enertia Servicing => Topic started by: Brammofan on April 16, 2010, 08:25:45 AM
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I wasn't sure whether to put this in servicing or mods... it's just a useful tool to find out exactly how much juice you're putting in your Enertia. Implovator uses it to figure out his energy use (http://www.implovator.com/2010/04/first-500-miles-on-the-enertia/), and I've heard of other users doing the same.
P3 International P4400 Kill A Watt Electricity Usage Monitor
(http://g-ecx.images-amazon.com/images/G/01/ciu/e2/6c/045d828fd7a0145f6d370110.L.jpg) (http://www.amazon.com/P3-International-P4400-Electricity-Monitor/dp/B00009MDBU/ref=sr_1_1?ie=UTF8&s=electronics&qid=1271388915&sr=8-1)
Definitely an affordable way of monitoring your cost per mile, savings per mile, and other information for the anally-retentive among us.
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Any word on what his kill-a-watt meter reads when charging and or in float mode? I have that meter as well, and find it invaluable
All the best,
Aaron Lephart
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I have a Watts Up, which is very similar in concept. I agree that a meter like this is invaluable to an e-bike owner.
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My boss used the same thing on my bike just to make sure I'm not sucking the life out of his company, the first day while the bike was parked out in the sun it read 58 cents after getting fully charged from around 35% while the next day we charged it indoors at about the same percentage drain it read 48 cents, my boss couldnt believe how cheap it really is to charge the enertia
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The Kill-a-watt is an invaluable tool in getting your spouse to believe that the reason the electric bill is so high is because the AC is running all the time, and it is not the bike. In KC, it costs me about 25 cents to charge it from 20%.
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Wow if only electricity was that cheap here I would be cranking up the AC all day long too lol
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I'm running about $1.20 for the days when I'm charging from battery levels of 8-15%, but that's due to $.39/kWh :(
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Whoa were do you live???
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San Francisco. It's a tiered rate system and .39 is the highest tier that my family is usually in.
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:o Wow... that almost 4 times what I pay. My sympathies to you.
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Just ordered one on Amazon...
just for kicks...and yes my wife questions how much it draws from time to time...and we have AC and a swimming pool...so my bike is a minimal draw compared to those two.
g
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My wife asked me the same thing because our bill went up about $25 a month shortly after I got the bike. I tracked it down to a new TV set that we got at about the same time. It seemed to draw ALL the time, whether off or on.
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I have been using one of those meters to follow the charging process of my 2012 Zero. When bulk charging the meter reads around 900 watts, plus or minus 50 watts. After bulk charging is completed, it cuts off quickly (instead of tapering the charge) and goes into a 7 watt trickle-charge mode - where it stays until the cows come home.
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I've been metering my power consumption so far - I'm typically using between 120-130 Wh/mile, so I've added about 32 kWh to my utility bill so far this month. I anticipate total monthly bills in general will go up by around 100-120 kWh ($8-10).
Historically I use a yearly-average 650 kWh/month, so the ebike will be a noticeable but relatively small increase.
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gonna have to learn some math...
energy charge:
First 450kWh------- 0.0906237/kWh
Next 450kWh------- 0.1373455/kWh
All Additional kWh--- 0.1576960/kWh
Of course with the solar panels we are usually in the plus range...though in June, July and August we will be in the first 450 (maybe even into the next 450 if we are using both the Air and Pool a lot....but we also produce a lot then too, so we still usually break even)...
What do those rates come out to with an Enertia? A Plus?
Gavin
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If you put a thousand miles on the E+ per month @ 130 Wh/mile, you should expect to see your utility bill rise by 130 kWh. If you're in the second tier @ $0.137/kWh then your monthly electricity bill will go up by about $18, or about 1.8 cents per mile.
A full recharge (60-80 miles) from empty will probably use around 7 kWh, or around $0.96 in the second tier pricing.
I'm getting about 120 Wh/mile at the plug when I ride at 45-50 mph, and about 130-135 Wh/mile with a small amount of freeway riding (rode 5 miles on the interstate yesterday heading to a dinner and a movie with friends).
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I use a Kill-A-Watt and I love the thing! I hooked it up to just about everything in the house... We are not actively miserly with electronics usage, and we stick around 400-450kWh/month. The goal is to setup our electronics, and our house to do the miserly stuff for us so we dont feel inconvenienced.
In the winter, we have the thermostat set to 60 degrees, but we use electric blankets and layers to keep us quite comfortable. My home media server is setup to go to sleep between 11pm and 9am, it only uses 35W at full tilt anyway. All of our appliances are energy saving. All of our lights are CFL or LED. During the summer we use a whole house fan during the cooler hours and seal up the house during the hot hours... so no AC usage here and things stay very comfortable unless its 95+ outside then we will use a little AC from time to time.
One thing the Kill-A-Watt found was that the 3 DirecTV receivers that we had where always using 45W even when not in use. That alone was accounting for 100kWh/month, so we got rid of them and just use OTA + Hulu + Netflix using Roku boxes that use 3W to 6W. Our 5kWh PV system produces about 650kWh average a month, so we should be sized just right after we get my Brammo Empulse this summer and my wife's Tesla Model X a few years from now.