It's not just the miner that is excluded from breaking. HV/MV/LV Transformers are also exempt from breaking, so are cables! (most effectively broken with a chainsaw)
Have you ever seen a battery powered mining operation in real life? They need to generate their power on the spot or receive it from afar. They can take a full year to reach the resources we reach in 2-4 Minecraft days.
Moving a real life mining operation ALWAYS leaves some stuff behind (breaks the package, having to resupply to set up elsewhere) so if IC2 would be really picky about it, you wouldn't be able to move a miner without resupplying it with new materials. Say mining pipes, drill bits etc etc...
Either way, the first time i used a mining drill i set up a MV feed using gold cable. I then set up an LV transformer, a chest and the miner. Waited for it to finish and let it pull it's pipes back up. wrenched the miner and the transformer and moved it along the gold cable another 9 blocks and set it all up again. Since wrenching a miner and a LV transformer NEVER fails your problems are solved without an addon.
If you are going to come talking about "oh but i want to use my lapo crystal to have a mobile mining operation that i can take wherever i'd like and i don't want to use cables" then obviously you don't want to play IC2 the way it's intended... You might as well TMI everything you want and be done with it because at this stage... You will never be happy until everything is as easy as clicking a single diamond icon in a GUI to get 64 diamonds.
EDIT:
At first i didn't want to waste my time but... Here goes:
Set up three basic generators, two bat boxes (they never break from wrenching either) , a LV transformer with redstone current and a long gold cable. Move your miner in one direction as far out as you'd want to go. Then on the return trip just make a bend each time and go back towards your generators. REPEAT as long as you'd like. Then, go in another direction around your generators. REPEAT for all 4 directions.
If you have 2 bat boxes, fill your three generators with 3 charcoal each time the second bat box goes below 4,000 EU stored. If you think that's too much maintenance then place ~16 bat boxes (You still can wrench them to your hearts content) and fill your generators to the brink with charcoal.
Even better yet, use 2 geothermal generators (they are not very expensive after all, but they do have a chance of breaking when you wrench them) and fill them with lava cells. They will then allow you to mine at least 88 minutes NON STOP. And no energy is wasted generating any surplus so you can skip the whole bat box thing if you'd like.
No matter what you do, when you have mined an area around those generators in all directions (say you mine 9 times in each direction in a square, you mined a surface area of 2,916 blocks. A total of 186,624 blocks searched if at sea level)
You are going to find enough resources to build yourself 20 or more extra miners after that... As well as have a bunch of diamonds in your hands.