What is a household battery tester?
|A battery tester is a device which checks the power left in a household battery. All batteries have a DC: direct current; that includes the batteries you use in remote controls, watches and smoke detectors.|
|Battery testers can generally be used on multiple types of household battery, including AA, AAA, 1.5v button cells, 9v square batteries and rechargeable and non-rechargeable batteries. However, it is best to check that a tester suits your battery needs before purchase, especially for more specialised batteries, such as those used in cameras.|
|A battery tester tells you if your battery is good, low or needs recharging or replacing.|
|There are two types of battery tester available; digital and analogue.
For more information, see: How does a battery tester work?