The battery is a Power Sonic http://www.portablepower.com/items/batteries/SLA/1/Powersonic/PS-12180/PS-12180NB/SL105/35L105S3 PS-12180NB. This is a UPS (uninteruptable power supply) type battery and is optimized by a charge rate of 5.4A till it reaches 14.4 to 14.7 volts. Once fully charged this type of battery must have a charger that either shuts itself down or goes into a float voltage mode. A float mode for this battery is a constant charge range of 13.8 to 13.8 volts continuously. When held at this voltage the battery will seek it's own current level and maintain itself in a fully charged condition. I am running the John Deere dynamo system and this system emits a continuous charge rate of 14.5 volts. This extra voltage can not be tolerated by this UPS battery and I speculate that it heated the battery up causing the bulging of the side. There is a possibility, under these circumstances that the battery case could rupture/explode while in flight which would create unwanted circumstances. I promoted this as a good Sealed Lead Acid Battery to use in our aircraft. I have now flight tested this battery and DO NOT recommend it any longer. Mark Langford, I suggest you remove yours and replace it as well as anyone else who may have one.
Mark Jones (N886MJ) Wales, WI USA E-mail me at flyk...@wi.rr.com Visit my KR-2S CorvAIRCRAFT web site at http://mywebpage.netscape.com/n886mj ----- Original Message ----- From: "Dan Heath" <da...@alltel.net> To: <kr...@mylist.net> Sent: Saturday, October 22, 2005 4:16 AM Subject: KR> battery had bulged > Mark, > So, why do you suppose that your battery was Bulged? > > See N64KR at http://KRBuilder.org - Then click on the pics > See you in Mt. Vernon - 2006 - KR Gathering > There is a time for building and a time for FLYING and the time for building > is over. > Daniel R. Heath - Lexington, SC > _______________________________________ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html
