On 30/03/13 08:36, dennis@home wrote:
On 29/03/2013 17:27, charles wrote:
In article ,
The Natural Philosopher wrote:
On 29/03/13 17:07, harry wrote:
On Mar 29, 4:57 pm, The Natural Philosopher
wrote:
On 29/03/13 16:50, harry wrote:

oh years of using rechargeable batteries and reading technical data on
them and reading user experiences harry.

You will find that batteries for alarm systems have to be changed after 5
years. I assume this is because their capacity is no longer as good as
when they were new.


Wrong sort of battery.

I challenge anyone here to raise their hands and say that they have
personally had experience of any rechargeable battery of any sort that
still maintains 80% of its capacity and is usable after ten years.

I have used lead acid, nickel cadmium, nickel metal hydride. lithium
ion, lithium polymer..in a variety of applications and I cannot recall a
single instance of any one of them being more than a pale shadow after
10 years. Occasionally a lucky lead acid will if used constantly and
topped up last more than 5..



--
Ineptocracy

(in-ep-toc-ra-cy) €“ a system of government where the least capable to
lead are elected by the least capable of producing, and where the
members of society least likely to sustain themselves or succeed, are
rewarded with goods and services paid for by the confiscated wealth of a
diminishing number of producers.