Better than the digital version recently listed https://www.ozbargain.com.au/node/312474#comment-4777426 as there is more drain from the analogue components, giving a slightly more accurate indication of the battery's true state. Plus its guide of red and green give a more idiot proof answer.
Specification:
100% brand new
Universal Button Battery Tester Checker AA AAA C D 9V 1.5V
Checks power level of all 1.5V & 9V batteries
Tests 1.5V miniature cells
Place your battery between the two points of the battery tester and the display will tell you instantly whether
you have a dud, or if you can eke out another few minutes of battery life
Easy to read, colour coded meter indicates power level
Three result: Red=replace, Yellow=low power, Green=good
If needle does not move, check that battery is touching both contacts before assuming that it is completely
dead
Size: approx. 110 x 59 x 25mm
Color: Black
The battery tester may be used to test the following sizes:
1.5V:
AAA, HP16, MN2400, R03
AA, HP7, MN1500, UM3
C, HP11, MN1400, SP11, LR14, UM2
D, HP2, MN1300, SP2, R20,UM1
9V: PP3, MN1604, 6F22, 006P
Kindly Reminder:
The battery tester is activated by the battery being checked.
Keep test times as short as possible, to avoid unnecessary battery drain.
Package included: 1pc x Battery Tester (Battery NOT included)
A digital LCD is far better, in my opinion. Different chemistries will have slightly different voltages. A fixed REPLACE / LOW / GOOD display isn't ideal. The digital model should be more resistant to shock too.