Their program package consists of a guidebook with photos and a step-by-step guide to teach you everything concerning the subject. They also have some pdf data on how to replace batteries in your home. Also, their instructor is readily available for inquiries and issues. CCA ranking describes the Cold Cranking Amps delivered by a 12V automobile battery at zero degrees Fahrenheit and a minimum of 7.2 V for 30 secs. The higher the CCA score of the battery, the far better its efficiency. The focus of Why Epsom salt works in lead-acid batteries salt option have to be around 1molar.