I got my "SOLAR BA9 40-1200 CCA Digital Battery and System Tester" from Amazon, and I like it. I got my Fit in 2014, and it has the original 340 CCA battery. The car had been sitting for two days, and the tester showed it had12.14 volts. Testing further, the Solar showed 345 CCA, although it's rated at 340. It looks like I won't be getting a new battery any time soon. At the end of the test, it recommended charging the battery. I haven't checked the charging system yet.

https://smile.amazon.com/gp/product/...?ie=UTF8&psc=1