Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
A battery hydrometer tells you acid concentration, which indicates state of charge. (Assuming the battery has had time to 'settle'.)
A voltmeter tells you its state of charge, although it is really better for alerting you when the battery is close to discharged, or is overcharged. A charge controller measures the rising voltage as the battery charges, and stops when it reaches full, which is typically 14.4 V.
The best indicator, if it is possible to monitor each charging session, is to use an ampere-hour meter.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
