As a technician at Volvo I also download car software. Powermax is great for battery maintenance. Maintains vehicle battery voltage between 13.8 and 14 volts. very important when connecting to the car's ECM. other escorts are twice as expensive. There are times when I was hooked up to a vehicle an hour before lunch and lunch was back an hour later and the car battery was still at 13.3 volts.
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