Ford Everest - Using a Solar Trickle Charger in the OBD Socket - Dajiang

I live between Malaysia and the UK. I have just bought a Ford Everest in Malaysia, and I am worried about the battery when leaving the car standing for 3-4 months. I have found a solar trickle battery charger in the UK (http://www.amazon.co.uk/ICP-06002IC10-Solar-Trickle-Charger/dp/B003IVD77Q/ref=sr_1_1?ie=UTF8&s=automotive&qid=1306333797&sr=8-1) which plugs into the OBD socket inside the car. My questions are:
1) is it a good idea to use a solar trickle charger that plugs into the OBD socket?
2) will the OBD plug on the UK charger fit into the OBD socket in the Malaysian spec Ford Everest?
3) if the plug and socket tally, will the pins on each also tally, ie will the pins carrying the charge be in the same position as the socket.