Quad Lock Waterproof 12V to USB Smart Adaptor for Motorcycles, Boats, Caravans

Great item

These are good and quality made as you wiuld expect thanks

Easy to install and gives peace of mind that your battery isnt getting drained when the bikes off

Fantastic bit of kit. Works well. Can’t fault it

Used on a scooter battery definitely goes up to 13 volts but still won't come on on "auto mode". "on" mode working ok so I'm just going to wire as a switch live USB instead so overall, workarounds found but annoying that they were needed when advertised as a all in solution.

I bought the Quadlock Waterproof 12V to USB Smart Adaptor along with the Quadlock Wireless Charging Head from Moto Central for my motorbike. It was installed following the Quadlock Waterproof 12V to USB Smart Adaptor instructions in April 2026. By June 2026 the bike was extremely dead. 1.54 v dead. It has drained all the cells of a Motobatt (NOT lithium) which was less than 2 years old and kept in great condition with trickle charge, in ~4 weeks of it not being used. I sent photos and a video which show the blue light remaining on, hours, days and weeks of not using the bike whilst set, as per instructions, on Auto. This is not actually some weird quirk if it happens to you, you need to rip that wiring off because it's draining your battery. As if them costing me a new battery, plus a mechanic to come out because my bike has zero signs of life so it's stuck where it is, wasn't enough... support want me to spend my time troubleshooting for a product which has plenty of history of this issue - check their website product reviews and also Trustpilot reviews. I've already checked things before I spent time sending you messages/emails for help. Didn't do this on a whim... I'm in warranty. I don't want any replacement. I just want my money back as the Quadlock Waterproof 12V to USB Smart Adaptor and Charge Head is not fit for purpose. But they are making me jump through hoops with taking more videos, photos, asking me to hook up this defective item in other ways to test it - sounds great. I really wouldn’t bother with this product.

If you have a lithium battery this won't work as intended - you'll have to manually switch it on and off. Regular dry cell battery and will work well. Great bit of kit.

Frickin love it! Had my other mount hardwired and worried about my bike going dead since there was no way to turn off the charging part. Bought this instead, worked it directly to battery posts. Works like a charm as it has an off and on switch on it. Just don't be the forgetful one like me and actually turn it off. Had to recharge my battery as it sat for a week. Whoops!

This is an awesome product and works for any USB powered device. I have it connected to my QuadLock magnetic charger in Auto model. It powers up when the bike's voltage hits 14 and powers off when voltage drops to 12.5, which is a long time after shutting the bike off. At first I didn't think it was working properly and had to check the instructions to find out that it stays on until it reaches the low point.

Conforme et impeccable

Le dispositif fonctionne correctement, pour le ON/OFF qui permet d'arrêter et de remettre le courant. D'où certains avis négatifs sans justification : Le mode automatique ne fonctionne que pour les batteries standard, AGM, Plomb... Le courant se coupe à partir du moment où la batterie descend à 12,4 Volts. Par contre sur les batteries au lithium cela ne fonctionne pas, parce que l'avantage de cette batterie est sa décharge lente, comparé aussi autres, et cela ne serait pas bon non plus pour ce type de batterie de descendre autant. Je l'ai acheté en connaissance de cause, puisque je possède une batterie au lithium, pour ma moto, donc je n'utilise que le ON/OFF. Et franchement rapport qualité prix s'est vraiment top. Ne prenez pas de la chinoiserie trop risqué, et vraiment pas de qualité. Pour gagner quoi 15 euros ? Je dispose déjà du support avec le chargeur à induction, d'où mon achat. Mais cela peut fonctionner sur n'importe quel types de fonctionnements alimenté en USB.