Review on ⚡️ Schumacher Fully Automatic Battery Charger and Maintainer - 10 Amp/2 Amp 12V - Ultimate Power Solution for Automotive, Marine, and Power Sport Batteries by Isaac Simpson

I have tried this charger with three (3) different gel and deep cycle marine batteries. All three batteries were already fully charged and it was a short test of the device. The charger stayed on "full charge" for at least 30-45 minutes. The device never went into "service" mode and the charge voltage stayed at 17.0 volts. Here you have a microprocessor "automaton". He found his way to the garbage can very quickly.