Power it up with 16 "C" or "D" batteries in series (16 x 1.5 = 24
volts), and wait for the voltage to drop. Buy the cheapie batteries
(zinc carbon, often labeled "super duty" or something equally
misleading), since they are less expensive and discharge quicker than
alkalines.

Bill

-------------------------------------------
wrote:
Hi all,

I need some help here.
I want to verify a voltage "trip" point on a board that operates on
battery supplied 24vdc.
The maximum draw is about 600MA

The board should change to "recharge required" at 22VDC

My thought is to put some sort of resistor in line on the main battery
feed so I can slowly reduce the voltage to a point where it trips the
recharge indicator. A voltmeter after the resistor would allow me to
monitor the voltage level where the recharge indicator is activated.

I am not an electronics guru (obviously) so something "off the shelf"
would be great.
Maybe some type of adjustable resistor? Any ideas?

Thanks.