Recent content by tjsean0308

BMW i3 Forum

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    Charging 80 or 100%

    It is highly likely that your pack is not completing the balancing discharge step. These cars only balance the pack at a high state of charge due to the way they balance. They discharge high-voltage cells to match lower ones. This requires a high state of charge so the range of the car isn't...
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    Battery life of 120Ah

    Modern EV batteries are lifetime components. Gone are the days of old chemistry and poor BMS software requiring frequent battery replacement. These cars aren't like early prius or Honda Insights. There will of course be manufacturing hiccups like with Bolt but you really don't need to worry...
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    Occasional Use Charger @ Level 2?

    The early Clipper Creek ones were dual voltage, the newer Delphi ones are not. Here's an old thread on this. https://www.mybmwi3.com/forum/viewtopic.php?f=10&t=5242
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    1700 miles in 48 hours -- 120 Ah BEV...

    I've had zero issues with the heat pump in my 18 and honestly not seen anyone with a heat pump specific failure. There have been compressor issues, but my impression is that's been more on the non heat pump REX models. For me it's been a key part of making shoulder season airport runs possible...
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    1700 miles in 48 hours -- 120 Ah BEV...

    I think you underestimate the complexity required to make a normal refrigeration unit act as a heat pump. I see about 4 different shut of valves acting to reverse the flow in the system at ~$150 each. Plus the additional lines, looks like 4 at the same ~$150 each. So that's about $1,200 before...
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    Level 2 Charger Recommendations

    ENate hits the big decision, smart or dumb. Do you need it to be WiFi and allow you to control the tariff charging times or are the car's built in timers enough? I had a dumb charger at first, but quickly got frustrated with the car's controls combined with my variable work schedule. I wanted...
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    1700 miles in 48 hours -- 120 Ah BEV...

    The heat pump is just like the one in your house. It's an A/C that can swap the condenser and the evaporator to heat or cool the conditioned space. They are insanely efficient, but not as effective in really low temps. I find my 18 uses the heat pump down to about 20f then the resistive heater...
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    Glad I Bought The i3 Instead Of A Chevy Bolt

    The Volt is not being recalled, the Bolt is, but yes Samsung makes the i3 packs not LG.
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    Maximum charge rate?

    80% is the average first taper on most cars, so you'll see that as the normal advice regarding unplugging and moving down the road. Electrify America even sends a notification to advise drivers they could be paying a whole lot for the same speeds they get at home. Some cars taper much sooner...
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    Mystery Steering Noise

    Is it like a popping noise that could be the springs in the strut? Kinds sounds like when a rock gets kicked out from under the tire at full lock? My car is in front of the BMW parts cannon for a noise like I'm describing right now. This time (4th attempt) they are doing the upper strut...
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    Software update needed for HV battery capacity check

    This is what will happen on normal gas BMWs when the 12V dies or there is a high drain from something like the lights getting left on. It's called teleservice battery guard and it's not available on the i3 at all. So either that person you talked to has no idea about i3's or they were actually...
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    TPMS reset question/problem.

    Glad it helped you out. If your getting a compressor type noise, that’s absolutely not related to the TPMS. A vibration could be from a poor balance. Another thing to check is the front rims clearance to the struts. If your wide rear rims got put on the front they will contact the struts. That...
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    Why is the roof black?

    I wasn't saying the battery cools the cabin. I was saying heat pumps are generally more efficient at cooling than heating do the thermal operating range of the refrigerant. The i3's heat pump is effective at heating down to 14f, but I notice the resistive heater starting to come on around 22f...
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    Auxilliary Heater

    I agree Aux heat makes me think resistive heater. The heat pump was standard until model year 2019 for the BEV in the US and never installed on the REx due to space constraints with the REx equipment. Now, sadly it is an option and I think a rather unpopular one so far due in part no doubt to...
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    Why is the roof black?

    To echo comments here. The roof is just clear coated CFRP. I'd imagine they made the choice for both a bit of weight savings (all be it very minor) and styling. I love the roof and the fact its literal cut-offs from the layup of the rest of the car. If you wanted you could wrap it in a silver...
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