This is where Hilti is second to none . During the two years time I have owned my impact drive I dropped 3 times from 6m high, strait on the floor, once felt behind the cement boards- 4 floors down and still working. Yesterday had it back from Hilti - all internals replaced, like new and free of charge. My laser had similar history- within the 2 years they replaced internals and external components. Now is like new too. After the warranty period they will charge only 1/3 of the price or will make you offer to replace it with new one. Every battery is tested at the end of the 2 years and if is not 100%, which they never will, is replaced with brand new for £10. They are expensive, no doubt, but will eventually repay back all customers.