I made a battery powered ESP8266 IoT device and wanted to check the real capacity of my 18650 battery. All 18650s are not created equal and may not be labeled correcdt either.
This is the setup:
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Discharge through USB tester to load |
First and last discharge the battery through a USB tester that counts milliamp hours.
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Charging setup |
Charge the battery with a USB LiPo charge module through the USB tester and note the mA hours.
Note the handy adapter board, electronic load and USB monitor are from Aliexpress. But came as a bundle that I can't find today.The USB monitor is an ATorch brand.
i5i6S-Type-c-Micro-usb-MiNi-port-adapter-board-converter-battery-electrical-test-adapter-board
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