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Spring Cleaning and Battery Testing
Each year I like to test my batteries and replace those that do not
have enough capacity for a typical flight of 3-4-ish hours with all the electronics running. I run two batteries so that removes a worry about loosing power during a record flight. But how do you perform a good real world test? My test is basically connecting a resistive load to the battery, measure the battery voltage every 10 minutes or so. Then wait for the battery voltage to drop to 11.5Vdc (an arbitratry but safe value). Simple. I create an Excel spreadsheet that explains all this - the testing that I perform, the test rig that I used and templates for gathering the data and then graphing the results. See http://aviation.derosaweb.net/#batterytest. I’d love to hear any comments that you might have. Enjoy. John DeRosa Johnatderosaweb.com |
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