Simple Circuit Measures Battery Drain

Abstract: Simple test circuit using a comparator and reference to measure battery drain.
Maxim > App Notes > AMPLIFIER AND COMPARATOR CIRCUITS BATTERY MANAGEMENT
MEASUREMENT CIRCUITS

Keywords: comparator, reference, low-power, hysteresis, comparators Sep 30, 2002

APPLICATION NOTE 527
Simple Circuit Measures Battery Drain

Abstract: Simple test circuit using a comparator and reference to measure battery drain.

Measuring battery life for a portable system is a time-consuming task, and the methods that accelerate battery
discharge don't provide reliable results. In the usual approach you simply measure elapsed time while operating
the product to the point of battery discharge. Running several such systems in parallel obviously gives more
data, if you can afford to tie up the lab equipment.

You can try to derive battery life from dat