Re: 1502 TDR Battery problems
On 11/06/20 16:02, Mark Pilant wrote:
I tried for quite a while to get the "battery fooler" to work *reliably* inDitto.
The zener concept isn't too bad, but there is the power dissipation in the enclosed volume.
I did try the Batteries Plus route and had them make up a replacement pack.I have found these acceptable
The diameter is slightly too small, but that is easily rectified with some closed-cell foam.
BTW, I did some checking, and these batteries will last about a month beforeYes. There is an ~1mA (higher if the chart recorder is present) drain even with the front panel switch off. If the battery is left in then eventually one or more of the cells will be damaged by being reverse charged. That's the reason the manual specified the battery should be charged monthly.
Personally I just leave the battery pack out of the case. If I wanted to keep it in the case, e.g. for shipping or long-term storage, then I would remove the fuse in the battery pack.