I installed mine in Jan 2014 after buying it at Stoddards. After the first year I started to experience lower voltages and problems with enough starter rpm for a O-320 Lycoming engine. I thought it was my starter and I replaced the Bendix unit. This winter I had to continually remove the battery and put in on a slow charger. Now in the summer of 2016, it will not hold enough of a charge to start in the morning, even though I fly every couple of days. I have been hand starting the darn thing. It has now been on a rejuvenating type pulse charger overnight and it is still only accepting a 75% charge.Today will be day two on the pulse rejuvenator. OK for saving weight but I am not so sure about reliability. I heard a rumor that there was a bad batch of these batteries. Anyone else have issues???