Ever tried changing batteries of your computer?

Suunto recently posted some rather funny videos about servicing their computers. Check this video on changing batteries in a Mosquito. It is really that easy, only it never works in practice, is a sheer marketing gag, and at best leaves the user feeling stupid. At worst, he ruins his computer.
The sad truth is that you cannot simply exchange the battery of your Suunto diving computer. After several dives to 50m, the pressure has squeezed the last bit of air out of your battery compartment. At the surface, there is a de-facto vacuum inside, making it impossible to open the battery compartment by using a screwdriver or coin. If you still try to do so, you will certainly destroy the lid of the battery compartment (no big deal), or, even worse, a part of the housing (in which case you killed the entire computer).
So here is how you change batteries. Go to your Suunot Dealer and buy a replacement lid. These come with the battery included. At home, you take a power drill, and drill a tiny hole in the lid of your computer. It allows air to enter, and you can remove the lid very easily with a crew driver. Then you insert the new battery, and new lid, finished. The trick is to sacrifice the old lid, but ensure that you do not break of any notches from the housing.
And next time some Suunot salesmen tries to explain to you that their computers are "user serviceable", show them your finger.

Long time

After recovering from last night, I decided to jump into Lobster bay. It was going to be the first time in 2007, using Scuba gear. At 3pm, the best light was already gone, but visibility was *****. Actually it would have been excellent for free-diving; I will go later this week. I wore the 7mm suit, which is too warm by now, so I will switch back to 3mm. I was a bit too buoyant, and carried a rock. The Oceanic Zeta caused trouble again, and showed minor free-flow. I have used Oceanic regulators for several years in Germany, where they proved almost maintenance free and never acted up. Ever since I moved to HK, both my oceanic regularly cause problems for one reason or another, usually free-flow. I will give it another try, and if I cannot figure it out, switch to Apeks.
The dive itself was not very eventful but felt amazing. I spend around 40 minutes in the water, taking a right hand turn. There was not too much fish, some clown, box and large starfish. At the tip, I found a single branch of red corral. Very unusual, as all other coral in the area is of the round or flat type.
Raymond saved the life of an octopus, caught by some fellow divers earlier, alive. He very kindly asked them, and they put it back in the water. Raymond and I share the philosophy that the only thing you should take out of the water are garbage and photos.