"John Weston" wrote in message
. ..
The Medway Handyman, in article dCc4g.60685$wl.60151
@text.news.blueyonder.co.uk, says...
Hi All

Saw this on the Argos site "Bosch PSB 14.4V-i Cordless Impact Drill with
Turbocharger".

It claims;

(a) Battery recharges in just 15 minutes with Bosch Turbocharger!

How does that work, and what does it do to the poor batteries?

You can get charger ICs that both measure the cell temperature
and look for the small reduction in the cell voltage when the
cell is charged. When this is detected, the charger switches
from a high current charging to a low current trickle charge.
Likewise, if the temperature gets too high, it reduces the
charging current.

These ICs are used in the more expensive chargers and have
more features than I've described, like maximum charge timers,
etc. They can be kinder to the batteries than the "3 hour"
cheapies that can over-charge the batteries if they are left
charging for greater than the specified time.

(b) Revolutionary impact mechanism for maximum drilling power, in concrete
and hard materials.

What's revolutionary about it?

The impact mechanism goes round in circles, behind the drill
bit :-)

So it moves the drill bit in and out? Rather than moving the chuck in and
out? How does it compare to an SDS?