They would run longer. The black and white are not the same as the blue set.
The blue set is definitely a more powerful motor.

The black and white is a home/light weight version. Hence the smaller
battery.

On 9/25/2010 9:57 PM, G Mulcaster wrote:
Hi folks,

I have a Makita 18V Cordless Impact Driver (BTD141) and Drill (BHP452)
set with 1.5A batteries. Compared to another 18V drill I have
(Mastercraft), the Makitas lack power.

These are the units availabe at Home Depot and are black and white in
color rather than the traditional Makita blue.

If I were to purchase 3A batteries, which are readily available, would
I have more power, or would the drills simply run longer?

Thanks, Gary