Chris, One of our customers had this problem in outdoor lighting in Las Vegas. He switched to Lithium-Ion batteries from K2 in Henderson NV and says they have been working well for 3 years in desert heat. They make small 12 volt packs with built-in charge control and discharge protection. They may be a good choice if the system is under 100 amp hours. David Katz AEE Solar
From: [email protected] [mailto:[email protected]] On Behalf Of Chris Daum Sent: Thursday, September 22, 2011 8:35 AM To: 'RE-wrenches' Subject: [RE-wrenches] High Temp Batteries Dear Wrenches: I have people trying to power medical equipment in an extremely hot environment--they need batteries that can withstand temps of 75 degrees Celcius. The Yuasa batteries they've been using are only rated to 50C and don't last long (and thus, are cost-prohibitive to use and replace). The MK AGMs are also only rated to 50C. Any ideas or alternatives would be appreciated. Chris Daum Oasis Montana Inc. 406-777-4309
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