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Edwin Pawlowski
 
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Default Which has the better cordless 18v. drill: Bosch or Hitachi


"KMoiarty" wrote in message
BTW, another question I have just came to mind: what is the
significance of "Ah" (e.g. 2.0 Ah, 2.5 Ah, 3.0 Ah, 3.5 Ah, and so on)
rating of a cordless tool's battery-capacity?



Up til now I had just assumed
this referred to amperage-per-hour output (which, like the amperage rating
of a corded tool, if multiplied by the voltage [e.g 12. for 12v. cordless
models, between 110 and 120 for all corded models] yields maximum energy
output [or consumption, respectively] per hour). But I'd like to somehow
find out for certain from someone if I am on the right track in this or
not... Because if this is true how can the most powerful cordless tool
possibly keep pace with an average corded one which has far higher, both,
amp and voltage numbers? Thanks.


The AH rating is how much power is available. Some tools use that power
more efficiently than others.

None can truly keep up with a corded tool long term. They may have equal
power for a short time, but there are compromises to get decent run time
from the batteries.