Originally Posted by
ericferret
Anyone else had problems!
There is no reason you can't get 7+ years out of your Concorde provided your electrical system is up to spec and you follow the OEMs recommendations. The average service life of the Concordes among my previous customers varied from 6 to 11 years. While there are internal faults at times, regardless of OEM in my experience the vast majority of battery premature failures are electrical system or user induced.
Some of the common ones are allowing the battery OCV to drop below 12.5v/25.0v, use of improper battery chargers, and excessive discharges without proper recharge. Each event basically can take months or years off the life of the battery. Unfortunately, an aircrafts electrical system is usually the last item that receives regular review...at least on my side of the pond. But this is a common issue here as well for the same reasons mentioned earlier.
Have you checked for parasitic drains?
Have you checked for voltage drops on both the positive and ground side of the systems?
Have you performed a capacity check to check the health of your battery?