Thermal runaway occurs in situations where an increase in temperature changes the conditions in a way that causes a further increase in temperature, often leading to a destructive result. It is a kind of uncontrolled positive feedback.This sounded worrisome enough to disconnect the charger and replace the battery myself. It is an Interstate Batteries Megatron with a 6-year warranty, but whatever mechanic installed it failed to knock out the dots that show month and year installed, so I knew there was no hope of making an effective warranty claim. So I went on Internet to find out what I needed. As usual Jaguar Forums had the answer: Type 94R, at least 720 CCA. O'Reilly auto parts had one. I've not bought and installed a battery since Nixon was President, so the almost $200 was a little breathtaking, but after only 30 minutes working in a 30 degree telescope garage, I had it installed, and the X-type started right up. One of the bolts that holds the retention strap in place disappeared during removal. It seems to be a 4" long M6 or even M4 bolt (1/4"-28 is too thick). Next time I go to the hardware store, I will buy one.
Thursday, December 1, 2016
Fun With Batteries
I tried to recharge the Jaguar X-type battery, and the charger displayed a code that the manual said indicated "THERMAL RUNAWAY." Doesn't that sound like something that might happen with the Terminator? Not really: