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Old 01-11-2017, 04:26 PM   #21 (permalink)
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you don't have long after the negative recals show up, use the grid charger and that will buy you more time.
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Old 01-11-2017, 04:48 PM   #22 (permalink)
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Quote:
Originally Posted by S Keith View Post
Lotsa good advice already. I'd like to add these bits...

Your car had a grid charger. It likely had one for a reason - it needed it. I suspect grid chargers are more frequently installed AFTER an IMA light than before. This means it's always going to need it. it just depends how often. It could be needed every month, every 3, 6 or 12 months or any number in between. Repeating recalibrations are the most obvious indicator.

As Sam mentioned, you're seeing recals. I'd like to clarify that a bit, so you understand this isn't going away. The only time the car "loses track" of the battery is when you disconnect the 12V. When this happens, it then goes through a forced charge process to see how the pack voltage taps respond to charging. It then calculates a baseline SoC for the current battery temperature, voltage and charge current.

The SoC is then continually computed based on the interaction of those values: tap voltage responses to current for the current temperature. It's iterative and inexact.

A recal occurs when the car says, "HEY BATTERY! You're not responding how you're supposed to at this current and at this temperature!" it's typically cause by one of the 10 tap voltages going too low under load or too high under regen hitting prescribed limits prematurely, so the car does a recal, which is basically the same thing it does when you disconnect the 12V - assume low SoC, force charge, assess response.

I suggest you contact the previous owner and ask him what brand of charger. If it's Hybrid Automotive, ask if the harness was discharge ready. If it's not an HA system, shit can it and buy the Prolong Reconditioning package. If it's an HA system, but it's not the discharge-ready harness, shit can it and buy the Prolong Reconditioning package.

This is only going to get worse and more frequent. Eventually, performance will deteriorate (mileage), and you'll get an IMA light and eventually a failed cell where your only option is to disable/bypass IMA or get a new pack.
Can you tell me what kind it was by the plug if I uploaded a pic of it? Or are they all the same generic plug?
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Old 01-11-2017, 05:43 PM   #23 (permalink)
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Please up load a picture. Might be able to tell.

Scott
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Old 01-11-2017, 11:21 PM   #24 (permalink)
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Hoping the steel mesh rainbow cord is telling of what brand it is.



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Old 01-12-2017, 03:14 AM   #25 (permalink)
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Sure appears to be Hybridautomotive. com. Would need to test pin outs, iirc 1& 4 are high voltage, 2&3 are the fan. If it's not discharge ready it's easily upgradable.

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Old 01-12-2017, 11:51 AM   #26 (permalink)
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Also it might be a good idea to open the hybrid battery lid and check out and confirm the connections. This would make it very easy to see if it is charge only or discharge ready.

If you do please take and post photos, it might make it easier for future assistance.

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Old 01-12-2017, 12:12 PM   #27 (permalink)
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Looks identical to mine. I have the charger from hybrid automotive as well.
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Old 01-12-2017, 12:42 PM   #28 (permalink)
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Quote:
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Sure appears to be Hybridautomotive. com. Would need to test pin outs, iirc 1& 4 are high voltage, 2&3 are the fan. If it's not discharge ready it's easily upgradable.

Scott
Scott,

IIRC, discharge ready = voltage at 1 & 4.

Not discharge-ready = no voltage at 1 & 4 due to diode in harness?
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Old 01-12-2017, 01:29 PM   #29 (permalink)
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I do remember the PO explaining how it worked and he did mention how it discharges then recharges..Guess I assumed that they all worked the same so I kind of listened but not really closely. He didn't seem to be super knowledgeable, so in my arrogance I kind of dismissed his banter I suppose. My mistake. Haha

Guess I could just go ask him; I've actually gone back to his house a few times for other reasons.. Not sure if it's appropriate to keep bothering him. I'll check the connections first like Scott said.
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Old 01-12-2017, 02:21 PM   #30 (permalink)
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That's what I suggested. If he's a true Insight enthusiast, he won't mind...
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