When the engine is running, the battery’s voltage should fall between 13.7-14.7V. The resting voltage (when the engine is off) measures around 12.6V. The standard automotive battery is a 12 Volt (V) rechargeable battery.
#HOW TO USE A MIDTRONICS BATTERY TESTER HOW TO#
How To Check The Car Battery Without A Tester.We’ll also cover some FAQs to give you a better understanding of car battery voltage and testing. We’ll also tell you how to check your alternator and offer a quick solution to battery testing issues. In this article, we’ll answer that question and show you how to test your car battery voltage (with and without a tester). If any of these conditions exist, replace the cables in order to complete valid battery tests.Knowing your battery’s voltage helps you determine how long it’s going to last. Inspect the test cable clamps for damage, including broken wires or solder points or weak spring tension.
If necessary, a few minutes spent cleaning with a wire brush and baking soda/water solution should do the trick, enabling you to create a good connection and obtain an accurate test result.
With the ignition turned totally off, turn the headlights on for a short period of time to stabilize the battery voltage. Vehicles with keyless ignition may stay awake if the key fob is nearby, so make sure that is not a potential factor as well.Ī Surface Charge error happens if a higher than normal or unstable voltage level is detected, and can occur if a battery was recently charged or if the vehicle had been running and was just turned off. Allow several minutes for all electronics modules in newer vehicles to go to sleep. Remove the key from the ignition and make sure doors and the hatch/trunk lid have been closed for a few minutes. Before testing the battery, turn off the engine and all loads, such as A/C, headlights, etc. 3 – TIE: SYSTEM NOISE & SURFACE CHARGE ERRORSĪ System Noise error message occurs when the tester detects a load or current in the system. Save some time and learn how you may be able to remedy these common battery testing issues on your own. Calls to Midtronics Customer Service often fall into one of three categories.