If you buy the profesional range, they are spot on.
I have an 18v NiMh one. Hapilly drills 13mm hole in steel
Or concrete (only a normal combi drill, not sds)
The batteries are key to most cordless tools, Look for NiMH or Li-ion for best performance.
Infact, most of my powertools are Hitachi. They get some abuse and always cope.
The kit i have has some of the highest capacity batteries available.
The newer stuff is available in various bits also using the same batteries, cordless grinders, jigsaws etc.
I wrote a review for another site im a regualr on;
I know that Hitachi cordless impact drivers are standard issue for Toyota team leaders, for use in on-production line repairs. Must tell you something.
hitachi is probably my pick of the bunch to be honest, but since i already had a load of dewalt stuff I'm gonna stick with it, and tbh i dont have any complaints about that gear, apart from the ones with the plastic chucks, but then i dont own any of those
I recently bought my first Hitachi drill DH 24 DV , i needed a cordless SDS machine and so far its been fine , i use a corded sds drill if im doing a lot of holes but the hitachi is very handy and saves getting the transformer and leades out
I Usually prefer Dewalt stuff but recenlty bought an AEG cordless (non sds) drill and thats got my approval so far ( i steer clear of plastic chucks they dont seem to last too long , maybe its the abuse i give them )
hitachi are very relaible, i have a hitachi sds and no complaints yet, my uncle has an older hitachi sds no bother there either. he has a 18v AEG cordless which is magnificent lol and a sds AEG drill, this is his seccond AEG sds, the 1st one ate concrete and the 2nd one is much the same. a bit expensive but you get what you pay for.
I notice you got Lithium ion batteries... they still work? I've been through a few myself since 2007 but this last set seems to have lasted well. I always make sure I completely drain the battery, then charge it to the max, then drain it fully, then charge to the max and so on... Has seemed to make them last longer!
I didn't get my hitachi stuff from here but i noticed they have a few deals on ATM and a competition... so if anyone wants some Hitachi stuff this could be the best deal right now... hitachi power tools