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by jadnashuanh
Sun Sep 27, 2020 5:21 pm
Forum: Technical BMW i3 Discussions
Topic: Battery Replacement Under Warranty
Replies: 74
Views: 29124

Re: Battery Replacement Under Warranty

FWIW, the conversion from ACV to DCV to charge the batteries is not 100% efficient, not counting whatever power might be used for fans associated with heating or cooling in the process. At 240vac, I've seen numbers around 95% efficiency in the conversion process.
by jadnashuanh
Sun Sep 27, 2020 2:48 pm
Forum: Buying the BMW i3
Topic: Buying a 2017 94ah vs. 2014-15Rex
Replies: 6
Views: 106

Re: Buying a 2017 94ah vs. 2014-15Rex

Discharge cycles tend to degrade the battery. One 'full' cycle is from 0 back up to 100%, and ten charges from 90-100% also equal one cycle. So, a larger battery pack over the same number of miles will experience fewer discharge cycles and at least should see a longer useable life. It really depends...
by jadnashuanh
Fri Sep 25, 2020 4:40 pm
Forum: General / Main i3 Owners Forum
Topic: Few questions after a few weeks of ownership
Replies: 4
Views: 146

Re: Few questions after a few weeks of ownership

1. What mode are you running the HVAC system? If it's in AUTO, it should sense and adjust the fan and the a/c setting to keep the windshield clear. Also, you might try bumping up the fan speed somewhat. It can stay in AUTO, while the fan adjustment is more of an aggressiveness setting and may help. ...
by jadnashuanh
Tue Sep 22, 2020 10:47 am
Forum: General / Main i3 Owners Forum
Topic: What does your "miles to empty" show when full?
Replies: 17
Views: 623

Re: What does your "miles to empty" show when full?

The range estimates are to the indicated zero point. And, the range to 'empty' is constantly being adjusted on a rolling average of the last 18-miles of use. So, unless you' are always driving the same route under the same conditions, it will often change. Say your trip starts out on country roads a...
by jadnashuanh
Tue Sep 22, 2020 10:33 am
Forum: General / Main i3 Owners Forum
Topic: My i3 is Dead
Replies: 58
Views: 16600

Re: My i3 is Dead

Almost everything in modern BMW vehicles (and some others, as well) is controlled via computers and that includes the lights, fans, and nearly every module in the vehicle. When you shut down, the computer sends serial data messages out the CANBUS to tell they to go into sleep mode. If there's an iss...
by jadnashuanh
Mon Sep 21, 2020 2:36 pm
Forum: News and Main BMW i3 Forum Discussions
Topic: can I charge the 12v battery through the 12 v socket?
Replies: 5
Views: 193

Re: can I charge the 12v battery through the 12 v socket?

To get into the vehicle, you may have to resort to actually using the key. To get access to the key slot in the driver's door, you have to use the key in a small slot underneath the handle to pry out the plastic cover, which should pop out, gaining access to the actual key slot. Once you're in there...
by jadnashuanh
Mon Sep 21, 2020 2:28 pm
Forum: Technical BMW i3 Discussions
Topic: How to deactivate acoustic pedestrian protection?
Replies: 7
Views: 251

Re: How to deactivate acoustic pedestrian protection?

In theory, should you ever have an accident with a pedestrian, or maybe even another car in a parking lot, you'd be opening yourself up to a big lawsuit as you would have defeated a now required safety component of the vehicle. I doubt it's on the states' inspection list, but it likely will be event...
by jadnashuanh
Fri Sep 18, 2020 2:22 pm
Forum: General / Main i3 Owners Forum
Topic: New Owner Charging Questions
Replies: 29
Views: 5287

Re: New Owner Charging Questions

CCS charging was optional in 2014, so first, you'd want to verify yours has it. If yours does, you can use any CCS or EVSE unit (DC fast charging or level 1-2 acv charging from an EVSE). The CCS plug is essentially the level 1 plug with an additional two pins below that provide the DCV input. With a...
by jadnashuanh
Fri Sep 18, 2020 8:40 am
Forum: News and Main BMW i3 Forum Discussions
Topic: I’m looking to buy R19 i3 snow tires
Replies: 1
Views: 165

Re: I’m looking to buy R19 i3 snow tires

I have a set, but shipping could be expensive from NH. Someone local that could pick them up would be preferred. They probably don't have much more than 8K miles on them, but are original from 2014, so at about the recommended service life. But, if you look at the price of the wheel, it's more than ...
by jadnashuanh
Fri Sep 18, 2020 8:33 am
Forum: News and Main BMW i3 Forum Discussions
Topic: Which versions of the AC compressor have people had failures with?
Replies: 30
Views: 4379

Re: Which versions of the AC compressor have people had failures with?

You can't open up the refrigerant lines without first recovering all of the refrigerant. Once you've made any changes, you then have to pull a vacuum, and refill the system. At least in the USA, it's illegal to vent the refrigerant into the atmosphere, and it's not a good idea anywhere. Generally, a...

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