Dennis Yeo Posted March 1, 2020 Report Share Posted March 1, 2020 Sorry if this has been already discussed. I usually run a battery tender between flights. Forgot to hook it up after a 2 hr flight and a couple of days later the voltage was at 10v. I show 13.6v + when the aircraft is running. Shouldn’t this indicate a charge? I replaced the battery 5 months ago. I have dual dynon first gen stuff Appreciate any input. Dennis Quote Link to comment Share on other sites More sharing options...
Tom Baker Posted March 1, 2020 Report Share Posted March 1, 2020 Depending on the battery tender you could be damaging the battery with its use. You need one that charges at a constant voltage. It is also possible that the keep alive wire for the Dynon has never been disconnected. Quote Link to comment Share on other sites More sharing options...
Animosity2k Posted March 1, 2020 Report Share Posted March 1, 2020 24 minutes ago, Tom Baker said: Depending on the battery tender you could be damaging the battery with its use. You need one that charges at a constant voltage. It is also possible that the keep alive wire for the Dynon has never been disconnected. Tom could you elaborate on the damage to the battery or provide a recommended battery tender? I am currently using a Optimate LFP it says 12.8V 5A for LiFeP04 batteries (I was given this from the previous owner when I purchased the plane). I just plug it in and let it go, I don't mess with any settings (don't even think there are any to change). Given the electrical issues I've been having I wonder if in any way it's related to me keeping my charger on... Quote Link to comment Share on other sites More sharing options...
Dennis Yeo Posted March 1, 2020 Author Report Share Posted March 1, 2020 Not familiar with the keep alive wire. When I shut off the master the Dynons power down. Is this different ? Quote Link to comment Share on other sites More sharing options...
Dennis Yeo Posted March 1, 2020 Author Report Share Posted March 1, 2020 My tender is made for that battery. Quote Link to comment Share on other sites More sharing options...
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