Monitoring Voltage

[Steve Hume]

I don't test mine but I bought a security system control board for  
nothing on ebay. I use it as a battery charge system for my batteries  
since it has all the charge and trickle charge already designed into  
its firmware for lead-acid gel batteries. It also acts as the 12V  
supply for the security stuff and the battery is just backup.
It did cost me $10 at Home Depot to buy a metal box to put it in.

If your battery is always on the charge system then monitoring it will  
not be sufficient for testing. Fancy UPS systems actually have to run  
off the battery to test it, or take it off the charge system and test  
it.

Steve Hume
On 11-Jan-08, at 11:39 AM, Hendrik W. M. van Eeden wrote:

> Does anyone, on this list, have XTension monitor a voltage between  
> 11 and 14 volts?  I need to find out if my security's backup battery  
> falls below 11 volts at anytime during a 24 hour period.  So it  
> would have to measure the voltage fairly frequently.