I had used Battery Tenders for many years for my cars but....
Went out to the garage and found 1 of the Battery Tenders had shorted out and melted the bottom panel....
Next I called Battery Tender talked to their support guy and advised him of my issue. He requested I send him a photo of the melted unit, so I did. He advised they had never seen this issue..
They sent me a new unit which I gave to another car friend as I no longer trusted Battery Tender and I had switched to the Battery Minder from Amazon. Then about a month later I get an email from Battery Tender requesting me to send the defective unit back to them for inspection but I already tossed it into the trash. The Battery Minder has worked very well plus it has the sulphate cycle....


Just my $0.02...