Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
mAh is calculated, not measured. it is how long the charge of a battery will last when it is loaded so that the charge lasts 10 hours or 20 hours.
If you connect an Amp meter across a battery then it shorts the battery. An Amp meter is supposed to be connected in series with the battery and its load.
An 800mAh battery will supply 80mA for 10 hours. it might supply 400mA for 3 or 4 hours. It might supply 800mA for half an hour.
if you put your amp meter across the battery terminals when set to amps you blew your multimeter fuse also. You must measure amps in series with a load.
Depends on what chemistry. Each type has its own characteristics. Some you can tell by terminal voltage, some by temperature rise, others only by integrating the current into them.
The only type of rechargeable battery that you can get a reasonable indication of charge condition by measuring the battery voltage is a lead-acid battery. That doesn't work for lithium or NiMH/NiCd batteries.
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.
