So you're looking for a impact wrench, and you need something that's portable. Electric impact wrenches (most notably cordless ones) are no longer under-powered and over-weight, and there are plenty of reasons why they are better than their air powered cousins.
Be ready for aftershocks. They are usually weaker than the mainshock, but can still be strong enough to do more damage, especially if a building or structure has already been weakened. Aftershocks can come in the following hours days weeks months and even years after edison battery the main earthquake!
A: Most cell phone batteries on the market will last between 300 and 500 charge cycles. For most people, this means an average cellular battery will last about 1 to 2 years. NiMH batteries tend to lose their ability to hold a charge gradually, while lithium ion batterty stocks-ion batteries perform well until the end when you will notice a dramatic drop in performance.
Okay, so we know we'd be sunk without our laptops and cell phones. But what about the car? Cars have batteries too. Perhaps you ride a Harley Davidson - not without a motorcycle battery! It's interesting to think where we'd be if the cobalt ontario canada afore-mentioned zapping episode took place. We know that our forefathers coped without batteries but could we?
Some cordless drill models have two batteries, so while one is charging the other can be used to power the drill. If you are going to be using a drill for hours at a time, then having two batteries on hand will really come in handy. The last thing you want is for your battery to die right in the middle of a project, and then having to wait for it to charge. If you see a cordless that you want to buy but only comes with one battery, just order another.
In other parts of the world, however, they haven't been so lucky. Europeans have been experiencing gas prices between $5-$8 per gallon for years. But they still get around. Common among their usual transport is a bicycle. You've seen many pictures of common folks getting around town bicycling. Kinda like what we did when we were kids. To get more "mileage", a lot of Asians and Europeans use hybrid electric motor bikes.
The thing to realize about any battery is it does have a measurable lifespan and efforts to extend it will help but not stop the eventual demise. So the number one thing that you can do to extend the life of any of the newer lithium batteries is always take it out if you are running on DC power to lessen the heat impact. Whenever buying any replacement battery, always check the manufacture date and try to find the newest one available.