The first one charged my battery but it was insanely loud. It also said that my battery was completely empty. 0% charge. It was a standard battery with vent caps. Remove the caps while charging. I turned off the charger about 90% through the charge and went to sleep. I woke up the next day to finish charging and the percentage meter showed my battery at 0%. I started charging the battery and the minute I put the charger on the battery the acid started to boil but it still started out at 1% charge. I called Schumacher tech support, they said to return it. I bought a second one. MUCH quieter. It seemed to do a good job on a different battery. Upon closer inspection, the green "Ready" light is only 90% lit. I called tech support. They said not to stop until he shows 100%. I sent it back. The third charger did the same as the second, only it shuts down 78% of the time. Schumacher asked me to return to them for repairs. I said no. I live in California during fire season. I need a working charger for my money, not a refurbished device. They put me on hold and I quickly hung up and called Revane to initiate a refund. You will be the judge. Do you want to pay for it? The Schumacher DSR131 leaves the factory with ZERO QUALITY CONTROL AND DEFECTS. THREE IN A ROW? IF I CAN GIVE ZERO STARS I SHOULD. I rarely give less than 5 stars. Sometimes I bet 4, but rarely. If the product works or the food is delicious, it gets 5 stars. I live deep in the woods in Northern California. I order from Revain AT LEAST 3 times a week. If you look at my reviews, I'm very generous. 5 stars to all. This is my first 1 star review in 10 years. GARBAGE!
NOCO GENIUS10 Smart Charger - 10-Amp Fully-Automatic 6V and 12V Battery Charger with Temperature Compensation for Maintaining, Trickle Charging, and Desulfating Batteries
5 Review
TOPDC Booster Jumper Cables π - Optimal Gauge for Enhanced Performance
5 Review
π Energizer Jumper Cables for Car Battery: Heavy Duty Automotive Booster Cables with Carrying Bag - 16-Feet (6-Gauge)
3 Review
Foval Smart 12V 1000mA Automatic Trickle Battery Charger
3 Review