Joerg wrote:
On 6/1/21 3:53 PM, Tom Kunich wrote:
On Tuesday, June 1, 2021 at 11:50:01 AM UTC-7, Joerg wrote:
On 6/1/21 11:18 AM, pH wrote:

[...]


The game changer, of course, is the Li ion technology since if was so easy
for uninformed users to kill off their lead acid battery pack.

Li-Ion also has its issues. For example, even top brand manufacturers do
not seem to understand that it is not a good idea to top off a Li-Ion
battery at close to 100% charge and then leave the bike in the garage
that way. This results in premature aging and loss of capacity. The
smarter way is to offer 80% or so which is plenty for a short ride into
town. Then let users top it off in the morning when they expect to go on
a very long ride. In the same way, don't ride it all the way down to
where the low-batt cutoff turns it off, at least not often.
NiMH would be more robust, but that chemistry never seemed to catch on
before Lithium came on the scene.


[...]

Actually, L-ion doesn't like 100% charge under any circumstances.


It's ok if you use it right away. There is always a toll to be paid but
then it's small. Thing is, most people do not know. Sadly, many
engineers don't seem to know either and then they design stuff that
ruins batteries over time by charging them 100% every single time, and
people buy it.

Phones folks seem to swap out every few years, I have the oldest phone of
all of the folks I know bar my dad! Mind you plenty of folks seem to trash
the phone and battery in that time.

My phone is 3/4 years old has apparently dropped to 86% it hates work as
it’s always on the edge of WiFi and cellular reception, so that does tend
to kill the battery.

Things like my iPad and Garmin have huge battery life so I don’t charge
every day as will last days.

The separate Garmin I have for the commute (the battery) is unlikely to
last as it’s used most days so the cycle count builds up.

New batteries are on the way. I'm wondering if they will be able to make
super-capacitors work. I read a short paragraph by a man who was a
graphene expert who seemed to think that super capacitors were already
on the horizon.


They say that for a couple of decades now :-)

Batteries do seem to be lasting better my last iPad was 6 or so years old
before I retired it, and it’s battery was still fine, had lost some charge
but could still last all day, but it wasn’t fast enough any more for the
software I use.

Roger Merriman.