See the charge level of a large-cell battery while protecting it from power surges. These monitors also check the condition of your charging system.

Measure the voltage of your batteries as well as the current they can supply to check battery health.

Test large engine batteries that draw up to 500 amps. Turn the dial to vary the load applied to the battery to see how it performs at different loads.

In addition to applying a fixed load to small engine batteries that draw up to 125 amps, this tester can check for defective alternator diodes.

Accurately measure the density and concentration of liquids—from salt water to battery acid—no calculating or reading scales required. These meters show readings immediately on their digital display. They only require 2 mL of liquid, less than half of a teaspoon, to take precise measurements. Switch between Specific Gravity, Brix, and other measurement units depending on your sample. These meters have an RFID interface, so you can quickly scan sample IDs on containers to identify liquids. They also have Bluetooth to send data wirelessly to your PC or printer. Store up to 1,200 readings, including sample IDs and time stamps, in their memory.

To measure liquids, these meters come with a filling tube and multiple syringes. Dip the filling tube directly into your sample to draw up liquid, or use a syringe to transfer your sample to the meter.

Designed for the field, these meters are IP54 rated, so they stand up to dust and splashing water.

Apply a fixed load to small engine batteries that draw up to 125 amps.

Testers with a 60/125-amp current load capacity offer two fixed loads. It is better for testing smaller batteries that draw up to 60 amps.