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Old 04-01-2014, 12:59 PM   #1 (permalink)
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Join Date: Apr 2014
Location: Austin Tx
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2007 HCH Battery replacement

I wanted to start a thread on my progress toward replacing my 2007 HCH IMA battery.

Car has 125K miles. IMA battery came on once but went back out. Mileage is OK at ~40Mpg. Power is very low and battery gauge drops almost instantly.

I bought a reconditioned set of batteries off ebay. Remove the existing battery and replaced the cells inside the battery pack.

The behavior is improved but not great. IMA light came back on. Battery indicator sits a 2 bars then goes to full charge quickly. If any assist is used it will go back to 2 bars. The improvement is that there is now some assist.

I'm in the process now of testing the old batteries to see if they can be saved.

If anyone is interested in the details I'll post my procedure and pictures

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