My apologies if this has been dealt with before.
My Tomtom 520 Professional and mobile phone were fried after plugging them into a 24v Scania socket(couldn’t see any other socket. Why some trucks don’t have 12v sockets i cannot understand). I thought the Tomtom charger is 12/24 volts and has power surge protection. Might be wrong on that one.
Garmin 770 lmt-d worked no problem.
Does anyone know a safe stepdown charger 24v to 12v that is currently available?
No electrical expert but I wouldn’t have thought that putting 24 volts through these devices would be problematic, you charge your mobile when at home using 240 volts after all (yes through a built in dropper I appreciate), I’d be more inclined to blame a faulty socket tbh.
I run everything through the 24v socket and no problems, there is a 12v socket in a Scania at the end of the dash next to the passenger seat.
tom tom are 12/24 so that shouldnt have been a problem
Mazzer2:
I run everything through the 24v socket and no problems, there is a 12v socket in a Scania at the end of the dash next to the passenger seat.
Will look passenger side next time.
kuku:
My apologies if this has been dealt with before.
My Tomtom 520 Professional and mobile phone were fried after plugging them into a 24v Scania socket(couldn’t see any other socket.
Given they both run off USB that suggests it was your Cig lighter to USB adapter that died.
As stated previously the TT will by design take 24V.
As you mentioned frying 2 items, were you by any chance using a single in to multiple outlet adapter?
If so, it could be that which was not designed to handle 24V.
It is the ‘cigar lighter’ plug that drops the voltage on most devices, therefore make sure you are using them rather than plugging USB plugs directly in USB sockets from third party adapters (which may only be designed for 12V).
The (genuine) TomTom chargers are indeed 12/24V so should have been fine (were you using the TT charger or some other 3rd party “dual output” thing?)
There are any number of 24V-12V dropper devices available from Amazon and eBay (other online retail outlets are of course available), some of them are straightforward plug-in-and-go devices already equipped with ■■■ lighter plugs and sockets. Of course, they all rely on the same cheap Chinese electronic components which may or may not be up to the job…
Difficult to know without complete information, but maybe the particular 24V socket is prone to blowing adapters. A 12/24V adapter should convert to 5V for the USB cable. Unlikely that you would fry the actual device, but who knows? I would definitely avoid whatever socket you were using but it probably isn’t the fact it is 24V if you are using genuine adapters.