Review on 🔋 Schumacher 15 Amp/3 Amp Fully Automatic Battery Charger and Maintainer for Marine and Automotive Batteries - 6V/12V by Jemar Lorenzo

After reading just a few reviews I decided to pull the trigger on this particular charger. My project's battery started on acceleration, but didn't build up enough voltage to restart after 15 minutes of operation. I bought it to charge the battery to 100%. I plugged it in out of the box, showed 11.4V, which is exactly what my voltmeter showed. Wow, love this feature! Yes, he skillfully understood that he was connected to a car battery and indicated the norm and 15 amperes. Relax. It went to sleep after about 5 minutes, so I hit a random button to turn the display back on. Success! It worked! I love it. So I watched it for 1 hour and it went up to 53%. I decided to let him do his thing. When I came back an hour later it seemed to be 80% stuck. I could also hear water/acid bubbles in the battery. Both the charger and my voltmeter read me 13.5 volts, which is an exaggeration in my book. With a minimum value of 12.9, the charger should have recognized a full charge, displayed this on the device and switched to float or float mode. But that's not the case. He charged to max because he thinks the battery is only 80% charged when it is actually fully charged and then something. If left unattended, it can lead to serious problems. Love the product, it will definitely charge your battery, but this charger 'smart' software bug should be fixed by the manufacturer.