Hey John,
Well that is bad news, but, it makes me feel a bit better. I say that
because I had the same experience. After about 2000 miles on our new
NmG - with a new pack we had three batteries fail. I never heard them
venting. I have bad hearing and could have missed it, but I don't think
so because Heidi has excellent hearing and she is very observant in
that way.
Anyway, I contacted Optima and spoke to Bridget regarding warranty
replacement. She informed me that using Optima batteries in an electric
vehicle voids any warranty. That is regardless of charger type, battery
management or whatever - No warranty if used in an EV.
Just curious, have you checked with them regarding warranty?
Ken
-----Original Message-----
From: John G. Lussmyer <
[email protected]>
To: Electric Vehicle Discussion List <
[email protected]>;
[email protected]
Sent: Tue, 4 Sep 2007 8:48 pm
Subject: [EVDL] New Optima pack
Okay, so I finished charging every battery at 14.50volts, down to 1.4A.
Some took longer, some did some venting.
I then took the Sparrow out for a spin around the block. 6.6 miles over
rolling hills at 40-50mph. This used 1.27 KWH.
At about the 4 mile mark, I noticed that the voltage was dropping down
to 140v with only a 120A draw. (up a slight hill.)
As soon as I got home, I checked the voltages on all 13 Optimas.
12.43, 12.45, 12.44, 12.40, 12.45, 10.68, 12.42, 12.44, 12.49, 12.43,
12.43, 11.43, 12.37
Note that batteries #6 and #12 show problems. #12 was venting a
little. The reg on #6 had it's undervoltage light lit. #12 doesn't
currently have a reg attached.
Looks like I have 2 bad batteries. sigh.
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