It's when the voltage (and current) are falling that it can get iffy.

But in a split-second before other transmission lines took over for the failed cables, voltage fell throughout the system.

Another way to check is put a load across it, say 10 ohms, and see how far the voltage falls in 1 minute.

The voltage at pins 8 and 9 must instantaneously follow pin 11 and go high as well, but this voltage falls exponentially as capacitor C1 charges up.

The terminal voltage of a battery usually remains reasonably constant during its normal discharge period but then falls dramatically at the end of its working life.

The l.e.d. will become illuminated when the battery condition is 'good' and will become extinguished when the terminal voltage of the battery falls below about 8.1V.

The voltage fell the 0.3 and started to climb once the lead wires had been disconnected from each other.

The safety circuit also turns off the pack before its voltage falls below a threshold.

The safety circuit determines that a pack has been used when its voltage falls below a threshold, or if it detects a minimum number of pulses.

Based on the specified cold cranking amperes of the battery, if the voltage under load falls below a certain point, the battery is bad.