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Lab 4 Report

# Lab 4 Report - slower pace of losing its charge In order...

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Brad Rogers BRAE 216 LAB 4 10-25-11 Lab Objectives: 1. Design and conduct experiments 2. Analyze and interpret Data 3. Introduction to automated data acquisition techniques 4. Numerical analysis techniques Procedures: 1. Formulate a specific hypothesis regarding the difference between the two AA cell batteries. 2. Design an experiment to test your hypothesis. 3. Determine the factors that would affect your experimental outcome. 4. Collect data using the logging capability of your DMM. 5. Summarize your findings using data plots. 6. In your report discussion, evaluate your results and critique the practicality of the results. Data: See graphs and tables. Discussion: With testing the Rite Aid brand AA battery we saw that both the current and voltage dropped quickly in the beginning but the leveled out as time went on. This means that the battery produced a lot of current and voltage at first and quickly dropped but then eased into a steady
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Unformatted text preview: slower pace of losing its charge. In order for a battery to qualify as a AA battery it must have a minimum of 1000 mAhrs. The Duracell brand ran slightly longer than the Rite Aid brand when we compared our results to other groups. The shortest life of a Duracell battery that we tested was 1199 mAhrs and the longest Duracell battery life was 1335 mAhrs, while the longest life of a Rite Aid battery we tested was around 1207 mAhrs and the shortest life was around 1079 mAhrs. The average amount of mAhrs for Duracell batteries was 1251.25 and the average for Rite Aid batteries was 1150.5 mAhrs. The Duracell batteries lasted slightly longer but cost more money. To get the most mAhrs per dollar, Rite Aid AA batteries are the cheaper choice. The Rite Aid batteries cost about 1.3 cents per mAhr, while the Duracell batteries cost about 1.6 cents per mAhr....
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