I have a Midtronics PBT 300 and use it frequently to monitor the battery and charging system health of all my vehicles. Expensive but worth ever cent. Takes all the guesswork out of potential battery, charging, and starting issues.
https://www.amazon.com/Midtronics-PBT300...ords=midtronics
I replace any battery that tests at 70% or less of the factory CCA. In today’s world, it is not a good idea for anyone to be stranded on the road or in a parking lot because of a dead battery. That is a particularly dangerous situation for a woman alone. I am always amazed at guys who let their wives or daughters drive around by themselves in cars with marginal batteries jsut to save a few bucks.
https://www.amazon.com/Midtronics-PBT300...ords=midtronics
I replace any battery that tests at 70% or less of the factory CCA. In today’s world, it is not a good idea for anyone to be stranded on the road or in a parking lot because of a dead battery. That is a particularly dangerous situation for a woman alone. I am always amazed at guys who let their wives or daughters drive around by themselves in cars with marginal batteries jsut to save a few bucks.