Battery Testers, Voltmeters & Multimeters

Frequently Asked Questions about Battery Testers

How do I know if my battery is fully charged?

A fully charged 12-volt battery should be reading 12.7 volts or higher. A fully charged 6-volt battery should be reading 6.3 volts or higher. You can check the voltage of a battery by using one of our trusty and inexpensive multi-meters, which are all under $15.00.

What is the difference between a capacity tester and a load tester?

A capacity tester will test the Ah (capacity) of the battery. For example, you would perform a capacity test on a UPS battery. Some of our popular capacity testers are the ACC-SB-300, ACC-BVA-300, ACC-BVA-350, and ACC-RC-300. A load tester will test the CCA (cold cranking amps) of a battery. You would use a load tester to test the CCA of your motorcycle or car battery. We offer several different battery load testers on-site that are perfect for at-home or commercial use.

What types of batteries can be tested with a battery tester?

Battery testers are designed to test a wide variety of battery types, including standard alkaline batteries (AA, AAA, 9V), lead-acid batteries, and specialized batteries like lithium-ion. Each tester is designed for specific types of batteries and applications, so it’s important to check individual product specifications to help determine which battery checker is right for your needs.

What is the 40/80 rule in battery testing?

The 40/80 rule is a guideline for keeping your battery charge level between 40% and 80% to maintain battery health and avoid the damaging extremes of a full charge (100%) and deep discharge (0%). This practice helps to reduce heat, voltage stress, and chemical wear, while potentially doubling or tripling the number of charge cycles you can get out of your batteries.

How do I use a battery multimeter?

To use a multimeter, you first have to select the DC voltage mode and set the range higher than the battery’s voltage. Connect the probes by attaching the red probe to the positive terminal and the black probe to the negative terminal. Read the measurement and check if the measured voltage matches the battery’s rated voltage. If not, the battery may be weak and need replacement.

What is the difference between a battery voltmeter and a multimeter?

The main difference between the two is that a voltmeter is a specialized tool that only measures voltage with a high degree of precision. A multimeter, on the other hand, is an all-in-one device that measures voltage, current, and resistance. If you are only looking to measure voltage, a voltmeter may be the best tool for the job. But if you need to measure multiple readings, go with a battery multimeter.