[Amazon.ca] ANCEL BA101 Professional 12V 100-2000 CCA 220AH Automotive Load Tester Digital Analyzer Bad Cell Test Tool $44.17
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Amazon has a good deal for this tester that will test the health of your battery, the charging system, as well as the starter. The unit retails for $75 normally and is on a lightning sale for $44.17. This makes it easier than using a volt meter to test all of these items. For those who can't get the battery tested for free, this is a decent price. Heck the tool price is generally the cost of what a mechanic would charge to test this on your car.