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by DBMandrake
Mon Aug 19, 2019 12:15 pm
Forum: Batteries and Battery Management
Topic: Replaced My Pack!
Replies: 10
Views: 498

Re: Replaced My Pack!

Do you have a MUT diagnostic tool ? If so, I'm not sure I understand why you're so reluctant to perform the battery calibration procedure. It's the only way that you're going to get the BMU to make an accurate measurement of the Ah capacity with a sudden large change in cell capacity such as after a...
by DBMandrake
Mon Aug 05, 2019 5:33 am
Forum: Batteries and Battery Management
Topic: Is my battery dying ?
Replies: 64
Views: 10965

Re: Is my battery dying ?

Second cell tested and also good - within 0.1Ah of the first cell - probably within the margin of error for the measurement technique. I'm surprised in fact at how closely the first two cells tested are matched. It makes you wonder what happened to the cells in my pack to cause the best and worst on...
by DBMandrake
Sun Aug 04, 2019 9:34 am
Forum: Batteries and Battery Management
Topic: Troubleshooting and repair for On-board Charger (OBC), DC-DC Converter
Replies: 404
Views: 61645

Re: Troubleshooting and repair for On-board Charger (OBC), DC-DC Converter

Any chance of getting the exact fault codes the car has logged ?
by DBMandrake
Fri Aug 02, 2019 9:41 am
Forum: Batteries and Battery Management
Topic: Is my battery dying ?
Replies: 64
Views: 10965

Re: Is my battery dying ?

Took a while but the first replacement cell has been tested and I'm glad to report it's in good health. :) I'm actually recording two different Ah capacity figures from the test of each cell - one from 4.1 volts down to 3.63 volts, and another figure discharging all the way to 3.0 volts. The reason ...
by DBMandrake
Fri Aug 02, 2019 5:27 am
Forum: Batteries and Battery Management
Topic: Another i-MiEV Battery Pack Failing...? Help!
Replies: 8
Views: 706

Re: Another i-MiEV Battery Pack Failing...? Help!

Hi Simon, Thanks for all that. I have already bought 2 cells and a BMS PCB from 2ndlife and they are sitting on the floor staring at me (and have been for the last 7 weeks... ). A coule of questions... 1/ How is the 'cell smoothing' thing done (via the MUT, I assume?)? It's a feature of MUT-III for...
by DBMandrake
Fri Aug 02, 2019 12:29 am
Forum: Batteries and Battery Management
Topic: Replaced My Pack!
Replies: 10
Views: 498

Re: Replaced My Pack!

Thanks Simon that is a lot to review but of course I did a calibration charge with my very first charge and twice since. You misunderstand. I'm not saying to do a "calibration charge", by which I presume you mean running the battery down until the bars are flashing and charging it back up...
by DBMandrake
Thu Aug 01, 2019 2:52 pm
Forum: Batteries and Battery Management
Topic: Another i-MiEV Battery Pack Failing...? Help!
Replies: 8
Views: 706

Re: Another i-MiEV Battery Pack Failing...? Help!

Any progress on this ? Some very inconsistent results between Canion and MUT there - and even within that Canion screen shot, which claims the pack is at a SoC of 6% yet the pack voltage is 358 volts (full charge is 360 volts, discharged is about 320 volts) and 3.98 volts for a cell would ordinarily...
by DBMandrake
Thu Aug 01, 2019 2:16 pm
Forum: Batteries and Battery Management
Topic: Replaced My Pack!
Replies: 10
Views: 498

Re: Replaced My Pack!

The procedure was based upon a UK owner who threaded 30 cm sections of allthread (12MM, 1.25 pitch) in place of four of the eight mounting bolts. I chose those bolts immediately fore and aft of center, and put wheel ramps under all four wheels as my tallest unmodified jacking option. I threaded a n...
by DBMandrake
Thu Aug 01, 2019 1:34 pm
Forum: Batteries and Battery Management
Topic: Is my battery dying ?
Replies: 64
Views: 10965

Re: Is my battery dying ?

So I finally bit the bullet and committed to replacing four cells in my pack, as the precipitous loss of capacity at what I believe is an accelerated rate continues, and I know that I'm going to really struggle for range this winter if I don't do something about it, not to mention the slow rapid cha...
by DBMandrake
Tue Jul 30, 2019 5:08 am
Forum: Batteries and Battery Management
Topic: Single LEV50-cell wanted for our Citroen C-Zero
Replies: 105
Views: 39665

Re: Single LEV50-cell wanted for our Citroen C-Zero

Not that it will do much good in this case, but here's an eBay ad for a single cell out of a 2015 i-MiEV (I didn't know there was such a model year in USA) so it must be LEV50N and they're asking $40USD with free shipping from Texas. https://www.ebay.com/itm/2015-imiev-battery-3-7v-50AH-RV-Golf-Car...

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