---------------------------------------------------------- Homebuilt-List Digest Archive --- Total Messages Posted Tue 07/05/16: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 08:26 PM - Dead battery (Dennis Wright) 2. 08:35 PM - Re: Dead battery (Charlie England) ________________________________ Message 1 _____________________________________ Time: 08:26:54 PM PST US From: Dennis Wright Subject: Homebuilt-List: Dead battery Trying to figure out if I have an issue with my electrical system in my sonex or just bad luck. Have had multiple battery failures. Here's the situation. Battery is an odyssey pc625. , 12 volt. Engine is an Aerovee 2180. First flight was in December 2015. Battery at that time was about 2.5 years old. During the time before first flight had to charge batter several times due to minimal use. After about 5 hrs of flying started experiencing a dead battery. Would charge, fly, and next day battery would be dead again. Figured it was due to age and fact that battery had sat uncharged for prolonged periods. Replaced battery. After about 15 hrs flying time (about 3 months) on new battery, went dead. Tried to charge but would not hold a charge. Had battery tested and showed that it had a bad cell. Replaced battery. After about 25 hrs (about 3 months), another dead battery and will not hold a charge Each time everything is working perfect one day and dead the next. Not blowing any fuses, no smoking wires, system voltage is showing 13.5 volts when I'm flying. Have not checked to see if there is a load on the battery when the battery solenoid is open but do not have anything connected on the battery side of the solenoid so unless the solenoid is bad, shouldn't have any load when off. Would appreciate any thoughts on what the problem might be or where to start to figure it out. From: Dennis Wright ________________________________ Message 2 _____________________________________ Time: 08:35:55 PM PST US Subject: Re: Homebuilt-List: Dead battery From: Charlie England On 7/5/2016 10:26 PM, Dennis Wright wrote: > > Trying to figure out if I have an issue with my electrical system in my sonex or just bad luck. Have had multiple battery failures. Here's the situation. Battery is an odyssey pc625. , 12 volt. Engine is an Aerovee 2180. First flight was in December 2015. Battery at that time was about 2.5 years old. During the time before first flight had to charge batter several times due to minimal use. After about 5 hrs of flying started experiencing a dead battery. Would charge, fly, and next day battery would be dead again. Figured it was due to age and fact that battery had sat uncharged for prolonged periods. Replaced battery. After about 15 hrs flying time (about 3 months) on new battery, went dead. Tried to charge but would not hold a charge. Had battery tested and showed that it had a bad cell. Replaced battery. After about 25 hrs (about 3 months), another dead battery and will not hold a charge Each time everything is working perfect one day and dead the next. Not blo! > wing any fuses, no smoking wires, system voltage is showing 13.5 volts when I'm flying. Have not checked to see if there is a load on the battery when the battery solenoid is open but do not have anything connected on the battery side of the solenoid so unless the solenoid is bad, shouldn't have any load when off. Would appreciate any thoughts on what the problem might be or where to start to figure it out. > > From: Dennis Wright 13.5v isn't enough to charge the battery. ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message homebuilt-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Homebuilt-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/homebuilt-list Browse Digests http://www.matronics.com/digest/homebuilt-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.