Re: 1502 TDR project
NiCd cells have a longer shelf life than lithium cells - I believe.toggle quoted messageShow quoted text
The 1502/3 has a nasty characteristic - even when turned off there is
a current drain of ~1mA through the chart recorder. If left
discharging then eventually the weakest cell will discharge first and
then be reverse charged - and that's bad news, It is behind the
statement that the battery should be fully charged once a month,
My solution is simply to remove the battery pack when not in use. Even
if each cell self-discharges, it won't be reverse charged.
But you should treat that with caution; I'm not a battery expert.
On 10/12/2019, Mark Pilant <mark@...> wrote:
> tabbed C NiCd cells are easily available, so the battery can be