Like I said, you can probably use your existing batteries if you just bought the 8444 "naked" (without batteries) and save a packet.http://www.toolstop.co.uk/makita-8444dz-18v-mxt-combi-drill-naked-p1455
Be as well buying a new drill body and using the existing batteries. Just double check that the batteries from the 8443 will fit on the 8444. I have the 8444 and it's fantastic.
Hi "gcol"
My makita 8443 has served me well. This drill was a godsend to me. I lent it to a friend it came back well hammered and hasn't been right since. I visited my local power tools outlet last friday. Seen both makita 8444 and the new bosch GSB 18VE-2. Both good machines makita costing slightly more but bosch has more power and battery charge time is 30 mins.
Bosch is also heavy but has edge over makita I think. What do you think. Which machine shall I go for.
Hi "gcol"
I had 3 batteries with my 8443, one packed in 8 weeks ago, other two having to charge them rapidly. This is sure sign batteries are on their last legs. So its got to be a new package. I have just seen makita 8444D with 3.0amp batteries. I think I 'll go for this option.