[Oeva-list] Help with battery heaters?

Tim Kutscha tim_kutscha at yahoo.com
Thu Apr 24 07:46:13 PDT 2008

Hi All,

  Does anyone have experience with battery heaters in cold climates
that could offer any advice to Jim in Ohio?

Tim Kutscha
OEVA co-chair

----- Forwarded Message ----
From: Jim Calvert <wwiibuff at wowway.com>
To: oeva- at bad-seed.org
Sent: Wednesday, April 23, 2008 5:12:31 PM
Subject: OEVA.org: tim_kutscha_yahoo.com

   Hi Tim:

   I own a 2007 Zenn ev and live in Ohio - which, like your area, has  
cold winters. The Zenn is a 72 volt EV with six 12 volt AGM batteries  
and a 5 HP DC motor.

   Would you, or any of the members of your group, have experience in  
providing a way to keep the batteries warm during cold days? As you  
know, cold greatly reduces the range of an EV, especially one that  
uses lead acid batteries. My range has been as low as 8 miles on 20  
degree days, while summer range is beyond 25 miles.

   I am aware of electric battery warmers that wrap around batteries  
and plug into a 110 volt household outlet. I also know about using  
insulation around the batteries. However, suggestions from someone  
who has actually installed a battery warmer system would be very  

   Thank you.

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