Don't forget also the weight difference between 1.5Ah and 4Ah batteries. If using single-handed up a ladder or in other slightly awkward locations, you'll be glad of the weight saving.
That was my thought initially but after a bit of searching the Makita 456 weighs 1.6kg with a 4ah battery and the DeWalt DCD785 is exactly the same at 1.6kg.
The battery has to weigh more on the Makita so its actual drill must be lighter, the DeWalt DCD785 with a 4ah battery is 1.88kg,
I guess some would say that the DeWalt must be stronger, better built, better quality ....would last longer etc etc but that's pure speculation with no facts so id never say any thing so contrived
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