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John Williamson

lid wrote:
tony sayer wrote:
I posted about the Toshiba battery. 20 years ago cell phones resembled a
brick because of the battery size. Within a few years the battery was
minuscule. There was little advancement over the years in batteries as the
"pressing" demand was not there. Arguably there was always a demand.
Amazing what they can do when they want to.
Yes battery tech to some extent, but a lot of cleaver tech in how they
use the battery nowadays to get long service times;!...

I'm willing to bet that more progress was made in reducing power
consumption hat increasing capacity.

My first cellphone had a lead acid battery that held 24 watt-hours, and
needed charging every day, and would only talk for an hour or so. I had
to carry a spare battery with me on a long day.

My current one has a battery about a fiftieth of the physical size,
which holds 5 watt-hours, and will run the phone for three or four days
on standby, or talk for a couple of hours.

The same physical size battery would now run the original phone for a
week or the current phone for a month or more. Admittedly, the old phone
could only be used to talk or as a very slow modem, and the new one is a
PDA as well as a phone and a fast modem, so uses much more power on
standby than a modern equivalent of the old one. I'd say the order of
magnitude is about equal between power saving and battery improvements
over the last fifteen years or so.

--
Tciao for Now!

John.