The key to happy and healthy batteries is understanding what you need to do to maintain them. The pages below will help become a battery maintenance ninja.
Measuring State of Charge
|If you want to know How to Check a Battery with a Hydrometer this is where you will want to go. It includes a step by step procedure and a link to a decent video.
Now if you have a sealed lead acid battery (SLA), this procedure will not work for you. You will have to test using a voltmeter.
|The basic concepts behind using a hydrometer for lead acid battery state of charge measurements. If you want to get a sense for the capabilities and limitations of this test, this is the article to read.|
|The specific gravity of electrolyte changes with temperature. This Battery Hydrometer Temperature Correction article will help you to make that correction. It even includes a printable PDF.|
|The fundamental concepts with respect tomeasuring state of charge using a voltmeter . While measuring SOC using a meter is easy, knowing how to interpret the results is necessary to making a good decision about your batteries.|
|Battery Voltmeter SOC Temperature Correction is a MUST if you wish to make a state of charge measurement that approaches any sort of accuracy in cold or hot weather.|