Key expired !

[Jembo]

I'm wondering if someone hasn't split the case to see what sort of batt. is in there. Maybe a capacitor would work if the batt. is a one off not available to the public. Maybe it's a capcitor already and the electrolyte has dried up.

You can buy the Panasonic batteries on fleabag, though the have an extra couple of metal pins soldered onto them.

Unfortunately, I couldn't get the solder to take so I'm down to one key ;@(

 

[Taz]

There was a charging pad in TK Maxx yesterday to wirelessly charge your mobile or other devices, almost picked it up though had too much other stuff I found I wasn't expecting to 'need', such as a mini electric compressor (£7.99), heavy duty tow strap (£4.99)

how the hell does a wireless charger work, not even sure how the key is charged in the ignition, i can not see a positive and negative on the key

 

[Stuart Truman]

Just a guess, but the charger puts an alternating current through a coil in the charger which transfers into a coil in the key. Transfer is made through the collapse of the magnetic field inducing the current in the receiving coil. Once you have a current in a circuit you can charge a battery.

 

[Rialas]

I don't get it either.
One of my keys is flat but refuse try it as it feels like witchcraft. Lol.

 

[Rialas]

taking a step further would it be good now & again if the car was in garage on trickle charge for 24hours with key in ignition ? :?

you'd also probably burn out the cars coil packs or something electronic.

 

[Taz]

Just a guess, but the charger puts an alternating current through a coil in the charger which transfers into a coil in the key. Transfer is made through the collapse of the magnetic field inducing the current in the receiving coil. Once you have a current in a circuit you can charge a battery.

that takes some thinking about??? to me you need a positive and negative

 

[H9 BJT]

Just a guess, but the charger puts an alternating current through a coil in the charger which transfers into a coil in the key. Transfer is made through the collapse of the magnetic field inducing the current in the receiving coil. Once you have a current in a circuit you can charge a battery.

I logged on this morning and thought I'd entered the science zone.... :? (thanks though)

Ok, so I'm off to TKMaxx to pick up one of those charger pad thingy's.... It's got to be worth a punt. I'll let you know if it works

 

[Stuart Truman]

Just a guess, but the charger puts an alternating current through a coil in the charger which transfers into a coil in the key. Transfer is made through the collapse of the magnetic field inducing the current in the receiving coil. Once you have a current in a circuit you can charge a battery.

that takes some thinking about??? to me you need a positive and negative

You do, you put an ac current through a bridge rectifier and smoothing circuit and Bob's your uncle. It's a really simple design. The ac to dc for charging is no different to any mains battery charger. The interesting bit is the use of two inductive coils.

Edit - And the inductive coil part is similar to a step down transformer, the coils are in separate items though instead of one component.

 

[H9 BJT]

Just pIcked up the charge pad (£17).... Cool bit of kit that charges iPhones etc etc but doesn't engage power charge mode when a key is placed on it.... Nothing lost as can use the mat on other devices we have.

Thanks again.