Review on 🔋 SOLAR Digital 12V Battery and System Tester: Maximize Efficiency and Reliability by Ken Kowal

Now we use this to quickly check every car battery at every 5,000 oil changes/service Here in Phoenix in the heat the wisdom is never buy a car battery and don't own it, you just rent it it until it fails. Mostly catastrophic and without warning. I've been looking for a way to predict these errors and this little gem is the perfect tool to help you with that. Immediately after connection, the open circuit voltage of each battery is displayed. You simply select your battery rating (usually CCA is A in the US), set the meter accordingly, and then quickly check the battery with black magic. No potentially destructive testing like old coal piles. Pressing the up (or down) arrow button will also give you additional battery status information such as SOH (state of health) and SOC (state of charge). It can also check the initial voltage and test the charging system. Instructions are rudimentary at best, but there are videos on YouTube. If you can connect the red clip to the positive pole and the black clip to the negative pole, this tool is easy to use.