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Old 06-19-2019, 11:47 PM   #11 (permalink)
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Folks unfortunately don't read stickies.
And some base their opinion on their very limited experience. They don't consider the many tales here of deep discharges rendering a semi-functional pack (needed frequent grid charging) to instant IMA light with disabled assist/regen.

They also don't consider the number of packs that you've seen that need multiple sticks replaced to be viable, or that I'm sitting on about 20 IMA batteries of different flavors - none of which can be fixed by grid charging, and it will be a challenge to sort through all of it and build even a handful of good packs - all of which will require regular grid charging for continued performance.
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Old 06-20-2019, 09:29 AM   #12 (permalink)
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Folks unfortunately don't read stickies.
Yes but then we could at least just post a link that says "READ THIS" instead of typing the same answer over and over.
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Old 06-20-2019, 10:02 AM   #13 (permalink)
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There is an InsightCentral.net Knowledge Base and Encyclopedia here but neither of them contain any information on repairs, common faults or general topics. How hard would it be to add something there? Heck, I looked there first for information about how much gas was left in the tank with no bars on the gauge but found nothing, yet it was mentioned that it was a common question many years ago.
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Old 06-20-2019, 10:56 AM   #14 (permalink)
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Yes but then we could at least just post a link that says "READ THIS" instead of typing the same answer over and over.
He has some links in his signature which do that, but every owner seems to have a slightly different battery question, so I think he is right that there isn't a "fix all" description.

We are luck to have someone experienced who takes the time to analyze and explain. The thread is well advertised and titled. If you don't want to read it - then don't
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Old 06-20-2019, 12:14 PM   #15 (permalink)
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Thanks for the link and wisdom, jime.

Alright, here's the thing.

I'm frequently gone for like 3 plus weeks at a time during which my car just sits there. In talking to Eric over at EV motors it sounds like this is not a good thing for the battery. So I'm thinking about going the route of bypassing the battery and taking it out for some extra trunk space.

If my car sits for a couple weeks, a nice drive to exercise the pack is helpful. For extended periods of sitting ( I park a couple of them for the winter ), I grid charge before driving.

Anyone have experience with mpg w/o the IMA? From what I understand the lean-burn mode has nothing to do with the battery so you should still be able to get awesome mileage, right?
As for mpg without IMA, an mt still does fairly well, though a bit sluggish on pulling out. Once on the highway, the ima is usually out of play anyway. I run the rpm range on my bypassed mt a bit higher to stay in the power range of the ice. I've had my silver bypassed for 2 years.

CVT's don't fair so well. Very sluggish on pull-outs; mpg in 40's & low 50's.

In my signature is a link to "gas only" with some mpg info and additional bypass info. Page 12, posts 116 & 119 has some more bypass pics.
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Last edited by Mountain driver; 06-20-2019 at 07:50 PM.
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Old 06-20-2019, 12:56 PM   #16 (permalink)
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And some base their opinion on their very limited experience. They don't consider the many tales here of deep discharges rendering a semi-functional pack (needed frequent grid charging) to instant IMA light with disabled assist/regen.

They also don't consider the number of packs that you've seen that need multiple sticks replaced to be viable, or that I'm sitting on about 20 IMA batteries of different flavors - none of which can be fixed by grid charging, and it will be a challenge to sort through all of it and build even a handful of good packs - all of which will require regular grid charging for continued performance.
Sure, but most people come in thinking they need to replace the batteries because that's the story that mainstream media has been pushing for years.

That may be the case!

But a grid charge deep discharge should be done PRIOR to replacing the battery, because you might not need to replace it at all. Either way, even if you do wind up replacing it, having a grid charger is a prerequisite for owning these cars.
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Old 06-20-2019, 07:03 PM   #17 (permalink)
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I'm frequently gone for like 3 plus weeks at a time during which my car just sits there. In talking to Eric over at EV motors it sounds like this is not a good thing for the battery.
fyi, before you park the car for long-ish storage, run the pack down by using assist/limiting regen and/or by doing an autostop discharge (leave the car in autostop and let the 12V load drain the pack). The main issue with sitting is that uneven rates of self discharge unbalance the cells. If you drain the pack prior to sitting, there's little room for imbalance, i.e. if you leave it at say 28% charge state the most imbalance that can possibly occur is 28% - one cell with no self discharge and still at 28%, one cell at zero. In reality it would likely be much less than that though... Additionally, I'm pretty sure rates of self discharge are higher at higher charge states, such as if you leave the pack car-full, ~75%, 165V-168V. So draining it low, self discharge rates are lower, probably less uneven, and there's not much capacity for imbalance in the first place. Unless one's pack is a real basket case, there shouldn't be any (major) problem with 3 week storage if you treat it like this...
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Old 06-22-2019, 06:39 PM   #18 (permalink)
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Quote:
Originally Posted by roadviking View Post
Thanks for the link and wisdom, jime.

Alright, here's the thing.

I'm frequently gone for like 3 plus weeks at a time during which my car just sits there. In talking to Eric over at EV motors it sounds like this is not a good thing for the battery. So I'm thinking about going the route of bypassing the battery and taking it out for some extra trunk space.

If my car sits for a couple weeks, a nice drive to exercise the pack is helpful. For extended periods of sitting ( I park a couple of them for the winter ), I grid charge before driving.

Anyone have experience with mpg w/o the IMA? From what I understand the lean-burn mode has nothing to do with the battery so you should still be able to get awesome mileage, right?
As for mpg without IMA, an mt still does fairly well, though a bit sluggish on pulling out. Once on the highway, the ima is usually out of play anyway. I run the rpm range on my bypassed mt a bit higher to stay in the power range of the ice. I've had my silver bypassed for 2 years.

CVT's don't fair so well. Very sluggish on pull-outs; mpg in 40's & low 50's.

In my signature is a link to "gas only" with some mpg info and additional bypass info. Page 12, posts 116 & 119 has some more bypass pics.
How does one look at signature links? I'm not seeing it...maybe I'm too new?
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Old 06-23-2019, 10:48 AM   #19 (permalink)
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Oops, sorry I didn't notice. You'll need a few more posts.

Here's the link for "gas only".
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Old 07-04-2019, 01:43 PM   #20 (permalink)
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Oops, sorry I didn't notice. You'll need a few more posts.

Here's the link for "gas only".
Cool, thanks. Wow, that's a loooooong thread!

Awesome to see the high miles you're getting with a bypassed ima. I read a bit about a potential limp mode issue, though it doesn't sound like you've noticed it very much on your car.

If I pull the trigger and buy this insight I think I'll have ev motors do an ima bypass in which the light wouldn't come on and, as I understand the car will be tricked into thinking the ima is totally fine. Hopefully that will get around whatever limp mode there is that could take away power.

I'd be driving mine about 500 miles from the Twin Cities out to Dickinson, ND every month or so. Def long enough to get the car "warmed up."

Wind would be the biggest factor I think.
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