Battery Bug is a bit different. It works best when synched with a new fully charged battery, and then does a starting amp draw test every time you start the car. Using that it calculates the percentage of original battery health as time progresses, and predicts when battery should be replaced.
It also has a nasty audible alarm if the resting battery voltage dips below a healthy amount.
I'd like it if it had a cutout as you describe, that would be quite handy!!
http://www.oreillyauto.com/site/c/detail/BBG0/BBSBM12/N0366.oap?ck=Brand+Search_BBG_-1_-1&mn=Battery+Bug&mc=BBG
Quote:
Originally Posted by BillGrissom
Smoker,
Your "Battery Bug" in the cabin sounds more like a voltage monitor. I use a monitor in all my newer cars that don't have a dash ammeter. They plug into a cigarette lighter. Simplest and cheapest is the Harbor Freight one, which has LED's to monitor the battery off (~12.6 V is good) and the alternator when running (~14.3 V). Another I have is an Eqquis (Amazon) that gives the exact voltage. My "Battery Brain" is different. It isolates the battery if it senses the voltage too low, so you will always have enough left to start the car. Even though its relay is rated ~200A, I don't run the starter current thru it.
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Last edited by Smoker; 12-02-2013 at 12:54 PM.
Reason: add link
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