Good news that it still works Alan.
Now here's a question for the technically minded among us. It may have been discussed before but..here goes.
I'm led to believe the battery is only for the remote locking mechanism. And the transponder doesn't draw power from the battery.
Apparenty the reasoning behind this is that, pre- remote central locking we had keys with transponders which had only a small head and no battery.
As a surfer I've also been told of people who take their transponder key in the surf because the water doesn't affect it. It's the battery and remote bit that water doesn't mix with.
Can anyone confirm or deny this?
SD, it's my understanding that when you press the unlock botton on the remote the key uses battery power to transmit a specific frequency to the car in order to unlock it. In the earlier days without remote locking, keys were equiped with a microchip so that when the key was inserted into the ignition it would make contact, either physically, or via RF and the car would see this was the correct key and allow you to start it.
Any key which uses a battery to power a transponder, whether it's for locking or immobilisation, I would not be taking into the surf.
Honda motorcycles use a system called HISS, where the key is microchipped (sealed within the key) and when inserted into the ignition an RF pick up detects the chip in the key and allows you to start it.
I am not certain whether the newer i30 keys use both systems, or that when you press the unlock button the immobiliser is separate from the key itself.