On 2006-08-01, Greg Neill wrote:

If this is a typical 9V battery as in:

http://data.energizer.com/PDFs/522.pdf

So a load in the area of 270 to 620 Ohm (the examples in that data
sheet) would be much more suitable.


then the usual load is in the neighborhood of a few tens
of mA up to maybe a couple of hundred mA at greatly
shortened service life. If your load current was really
as high as 4A, then if the battery wasn't finished before
it probably is now.

Oops!