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by pbui19
Fri Apr 12, 2019 1:34 pm
Forum: Batteries and Battery Management
Topic: Battery Capacity Testing
Replies: 65
Views: 31548

Re: Battery Capacity Testing

Thank you for your instruction, I was able to get Hobdrive to work; and indeed the Ah is same value as from Canion. I did get the dreaded warning light car-with-!; but it went away upon restart. I am glad to see the 12v-aux voltage display, is there a way to plot this voltage ? my thinking is the pl...
by pbui19
Thu Apr 11, 2019 1:49 pm
Forum: Batteries and Battery Management
Topic: Battery Capacity Testing
Replies: 65
Views: 31548

Re: Battery Capacity Testing

Canion, Hobdrive, and Evbatmon will all give the HV battery Ah capacity. Canion is free but requires a more expensive STN11xx adaptor (such as OBDLink LX) and will not work with a cheap ELM327 adaptor. Hobdrive has a free version and will work with a cheap ELM327 adaptor so is probably the cheapest...
by pbui19
Thu Feb 28, 2019 3:30 pm
Forum: Modifications & Accessories
Topic: how to limit dcqc rate
Replies: 5
Views: 2935

Re: how to limit dcqc rate

Thanks for your comments PV1. So each bar does not represent 1 kwh then ? I've always thought that was the reason behind the 16 bars full scale.
by pbui19
Thu Feb 28, 2019 10:07 am
Forum: Batteries and Battery Management
Topic: Care and Feeding of the OBC/dc-dc
Replies: 27
Views: 10033

Re: Care and Feeding of the OBC/dc-dc

I too very much appreciate this thread. Some thoughts: We had noticed early on that the 12v aux batt gets drained if we lock the i using the fob button; so I've gotten into the habit of only to lock with the button on the door. The other source of drainage is the ODLink brick for Canion, so I only p...
by pbui19
Tue Feb 26, 2019 2:43 pm
Forum: General / Main Owners Forum
Topic: Power the house with MiEV battery?
Replies: 11
Views: 3812

Re: Power the house with MiEV battery?

I have a set up with an external 12v 4kwh LiFe external pack to drive a 2000w dcac inverter. I can jumper the iMiev (or a Volt/Bolt) 12v to add charge to the external pack. But a recent test to power a 2 hoses portable ac/heater heatpump drew 120A on the jumper cable. Even a 6awg cable was getting w...
by pbui19
Tue Feb 26, 2019 1:40 pm
Forum: Modifications & Accessories
Topic: how to limit dcqc rate
Replies: 5
Views: 2935

Re: how to limit dcqc rate

I may be a bit panaroid about this, as the duration above 40kw only lasts a few minutes. There is a 25kw station and I've used it. if I can trick the BMS to think the SOC is around 50%, then the charge rate is limited to ~20kw. I am afraid it involves hacking the CAN bus messages. But I think I need...
by pbui19
Fri Feb 22, 2019 4:41 pm
Forum: Modifications & Accessories
Topic: how to limit dcqc rate
Replies: 5
Views: 2935

how to limit dcqc rate

so I am finding myself doing dcqc almost exclusively this winter for a number of reasons: paranoided about on-board-charger failing, cooler weather, a free station 1-mile from home, and another practically free ($0.06/kwh) on the way home. Because my house is at 2200-ft elevation, with a 50-mile rou...
by pbui19
Sat Feb 16, 2019 3:13 pm
Forum: General Technical Discussions
Topic: i-MiEV Cuts Out After Hitting Bump
Replies: 9
Views: 3191

Re: i-MiEV Cuts Out After Hitting Bump

A while ago, my motorcycle died right after hitting a pothole. Apparently the shock loosen something in the 12v battery and sorted it out thus overloaded the generator/alternator. I would also check the 12v health.
by pbui19
Thu Feb 14, 2019 9:34 am
Forum: Batteries and Battery Management
Topic: i-Miev Battery Cell Testing
Replies: 10
Views: 3519

Re: i-Miev Battery Cell Testing

I think you are referring to charge shuffling. I am not sure if it's possible for deeply out of balanced cell, and if it does, it may take a really long time. Imagine a worse case scenario where all cells are around 80% SOC, and the one newly swapped cell is at 10%. The available range would also si...
by pbui19
Tue Feb 12, 2019 10:34 am
Forum: Batteries and Battery Management
Topic: i-Miev Battery Cell Testing
Replies: 10
Views: 3519

Re: i-Miev Battery Cell Testing

The challenge is how to balance the cells with respect to each other, since they are all in series ? When I rebuilt the Prius' pack, I had to connect all the modules in parallel for a couple of days while exercising slow up/down charging. At least with the Prius pack being NiMh, one can top balance ...

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