---
title: "Measuring Battery Capacity"
description: "Why is choosing a simple AA battery such a daunting selection process? Manufacturers are keen on giving their products different names and brag about the chemical technology…"
canonical: "https://www.baldengineer.com/measuring-battery-capacity.html"
author: "James Lewis"
date: "2012-04-09T17:19:01Z"
lastmod: "2015-03-26T13:38:40Z"
image: "https://www.baldengineer.com/wp-content/uploads/2012/04/bat_graph.png"
categories: ["around-the-web"]
tags: ["arduino-stuff","battery","measurements"]
---

# Measuring Battery Capacity


Why is choosing a simple AA battery such a daunting selection process?  Manufacturers are keen on giving their products different names and brag about the chemical technology that makes them up.  However, it is nearly impossible to make package-to-package comparisons of the battery's capacitor.

[Denis Hennessay](http://denishennessy.com/) has a GREAT write up on [Measuring Battery Capacity with an Arduino](http://denishennessy.com/2012/04/08/measuring-battery-capacity-with-an-arduino/ "Measuring Battery Capacity Experiments").  In addition to full details on how his project works, Denis even shares the results of several AA batteries.  Nice!