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by MarkH
Wed Apr 07, 2021 4:02 pm
Forum: Problems / Troubleshooting
Topic: Battery discharging while Stationary
Replies: 37
Views: 975

Re: Battery discharging while Stationary

Sorry, Art. Crossed your post. Seems DTC 's not the problem.
Thanks for your post. :-)
by MarkH
Wed Apr 07, 2021 4:00 pm
Forum: Problems / Troubleshooting
Topic: Battery discharging while Stationary
Replies: 37
Views: 975

Re: Battery discharging while Stationary

OK. Fixed :) One thing I thought I noticed was that the brake pedal felt hard when I went to engage the gear select. I have now confirmed that that IS a relevant symptom. Since all the 12V stuff was working as normal, I revisited the HV connection. I disconnected and then re-connected the HV isolato...
by MarkH
Wed Apr 07, 2021 1:51 pm
Forum: Problems / Troubleshooting
Topic: Battery discharging while Stationary
Replies: 37
Views: 975

Re: Battery discharging while Stationary

Problems. I picked up an identical replacement battery from the agents (90kms way) yesterday. Put it on charge overnight. Installed it this morning and reconnected the HV (through the fiddly HV connector). All 12V systems seem to be working: unlocks and relocks everything; screens are alive. When I ...
by MarkH
Mon Apr 05, 2021 11:53 am
Forum: Problems / Troubleshooting
Topic: Battery discharging while Stationary
Replies: 37
Views: 975

Re: Battery discharging while Stationary

All good. Thanks.
by MarkH
Mon Apr 05, 2021 1:37 am
Forum: Problems / Troubleshooting
Topic: Battery discharging while Stationary
Replies: 37
Views: 975

Re: Battery discharging while Stationary

The voltage on the old battery was <1V and I'm now concerned at the time that the HV might be sitting at a very low charge while I wait for a replacement. The HV battery's charge level shouldn't drop more than 1%/month while your i3 is parked. 12 V is required to close the HV battery's main contact...
by MarkH
Mon Apr 05, 2021 1:33 am
Forum: Problems / Troubleshooting
Topic: Battery discharging while Stationary
Replies: 37
Views: 975

Re: Battery discharging while Stationary

MarkH wrote: ↑ Mon Apr 05, 2021 11:17 am It's the East Penn Manufacturing Co. I'm surprised that a U.S. manufacturer would be the source 12 V batteries for i3's sold in New Zealand. I'm pretty certain that the 12 V batteries in European i3's aren't supplied by East Penn Manufacturing. MarkH wrote: ...
by MarkH
Sun Apr 04, 2021 4:17 pm
Forum: Problems / Troubleshooting
Topic: Battery discharging while Stationary
Replies: 37
Views: 975

Re: Battery discharging while Stationary

It's the East Penn Manufacturing Co. I've got it out and will take it around a few local suppliers tomorrow to see if anyone can source a direct replacement - otherwise find the closest "other" 20aH AGM that I can. I'll also call the nearest BMW dealer to find if they have a direct replacement and, ...
by MarkH
Sun Apr 04, 2021 3:52 pm
Forum: Problems / Troubleshooting
Topic: Battery discharging while Stationary
Replies: 37
Views: 975

Re: Battery discharging while Stationary

That's interesting. Hydrogen is lighter than air, but the venting tube heads downwards :?
by MarkH
Sun Apr 04, 2021 2:25 pm
Forum: Problems / Troubleshooting
Topic: Battery discharging while Stationary
Replies: 37
Views: 975

Re: Battery discharging while Stationary

It's good to hear that it doesn't have to be an exact match.
I have found some AGM batteries of 20aH and similar dimensions, but none have the breather tube.
How important is that?
by MarkH
Sun Apr 04, 2021 1:15 pm
Forum: Problems / Troubleshooting
Topic: Battery discharging while Stationary
Replies: 37
Views: 975

Re: Battery discharging while Stationary

Yeah, looks like that's what I'll have to do. No BMW dealer within 90km so I'll do the replacement myself and then get it registered. Biggest problem may be getting the correct replacement battery. I appreciate you sharing your knowledge.

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