These are either miss labelled (not really the 'HVS' version) or the description is just wrong. I tested one with 12 volt input - worked just fine. Then tested it on a battery with 47.3 volts - worked fine. Then tested it on a battery with 50.3 volts and it blew immediately. Vendor needs to re-edit the description where it says, "4.5-53V." That is just wrong.Addendum - in all honesty, I posted the question about 54 volts after I ordered these things and Cbas responded with a terse "no". But when they came, I tested one anyway. They are cheap and they work with lower volts, so I'll keep the rest of them.
Germany France Travel Power Adapter,TESSAN Schuko Plug With 2 USB Ports 2 AC Outlets, US To European Europe German French Spain Iceland Norway Russia Korea Adaptor(Type E/F)
17 Review
EXuby Digital Converter Box For TV With RF/Coaxial And RCA Cable For Recording And Viewing Full HD Digital Channels Free (Instant Or Scheduled Recording, 1080P HDTV, HDMI Output, 7 Day Program Guide)
12 Review
4-Pack Unidapt US Plug Adapters - Convert EU, Europe, Japan, And Canada To American Power Outlets - Travel Plug Adapter For USA - Wall Plugs For Improved Accessibility And Convenience
11 Review
HOMELYLIFE 600W High Power Voltage Reducer DC 48V 60V 72V Step Down To DC 12V 50A Buck Converter Waterproof Module Car Truck Power Regulator Transformer
12 Review
Portable Headphone Amp With 3.5Mm Stereo Audio Out, GAIN Support & Lithium Battery - Compatible With IPhone/Cellular Phone/MP3/MP4 /Computers.
27 Review
🔊 Enhanced SONY STR-DE695 A/V Receiver for Remarkable Home Theater Audio System
4 Review
Sony STR DH790 7 2 Ch Receiver Vision
11 Review
Experience Superior Sound Quality With SMSL Audio SAP-8 Headphone Amplifier In Black/Silver/Gold
5 Review