It’s important to test your battery and electrical system regularly, not just when it’s starting to show signs of weakness. Proactively testing it twice a year will help reduce your chances of failure. Fully charged automotive batteries should measure at 12.6 volts or above. When the engine is running, this measurement should be 13.7 to 14.7 volts.
Lead-acid battery technologies have been used in energy storage applications for decades. The purpose of the battery performance testing is therefore to verify claims made by manufacturers about performance, integration, and installation of lithium-ion battery packs, and to disseminate the results to the public.