Anyone else have problems with the battery? Just had the shop tell me mine was dead and wont hold a charge. I thought I heard something about battery complaints before, but i dont want to misspeak. The complaint was referred as pilots waiting too long before cranking over the engine, also that we should pull the breaker on the vacuum pump until we turn on the engine.
Anyone else have any input on this? Also what does it take to install a better battery? I was told it needs to be factory approved…??
Here’s some recent experience I had with a dead battery and possibly how to avoid the inconvenience and embarrassment.
My battery died in what at first seemed a sudden manner. Worked one day. Dead three days later. Upon investigation and reflection, it did not really die suddenly. Some of the pre-failure symptoms included (1) alternator circuit breaker opening upon startup (due to high current flowing suddenly into the almost dead battery) (2) “low volts” light on with alternator off after normal startup and short run. My battery was fully recharged and is now in good shape. I have 150 hours on the hobbs, and average flights are probably 1.5-2 hrs. At the recommendation of Cirrus and my mechanic, I now start with the alternator switch off, get the engine to smooth idle, note the current drain on the battery, switch the alternator on, monitor the charge rate (usually a short period of 30 amps, rapidly declining to 5 amps) and then turn on avionics.
I leave the electric backup pump on, as this verifies operation of that system. (SR-20 B model). This procedure works well, and tells me if I am going to lose the battery soon. It is also a very good check of the alternator (far better than cycling the landing light or pitot heat). My battery may die tomorrow, but I should have some warning if it is not taking a charge today.