"Robert Ehrlich" wrote in message
...
Bill Daniels wrote:
...
Cell phones with Li-ion batteries work just fine if
charged regularly.
...

No. Most lead-acid batteries in my club are much older than
my cell phone and are still working, while the battery of my
cell phone is dead.

My cell phone Li-ion battery was still working fine after five years when
the service provider went bad.

OTOH, I replace my glider SLA at every two years or sooner to be sure I have
full capacity. It makes me wonder how many complaints about $3000+ flight
computers and varios are due to the owner being too cheap to buy a new $30
battery. Flaky lead acid batteries make most electronics flaky too.

Bill Daniels