This is an information and operation and maintenance worksheet for lead-acid batteries. It covers battery basics, the various types of batteries, battery safety and how to measure state of charge. This document is open source.
Attached to the end of this article are the .svg (scaled vector graphics) files for both sides of the info sheet. These are in case you would like to use or edit some of the information. Depending upon your browser this may not display correctly - please right click and choose 'save link as' and then open up in a desktop publishing package such as inkscape and it should look correct. Please just use the pdf if you would like to read the info on-line.