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必要な工具と部品
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Here is the side-by-side of the batteries. Luckily the batteries have their own markings so they will be easy to identify during this test. Note: Apple symbol on the eBay battery.
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First step are to measure the physical dimension of each battery. This may seem tedious since it was done for each battery but for the integrity of this test its deemed necessary.
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First the iFixit battery. Weight is 42.79 gram
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Length is 108.82
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Thickness of the XCAP is 3.62mm
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Yes, it is boring and tedious but to ensure that this guide compares like to like it is felt to be necessary.
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For the question on Answers, the batteries were all charged using a “Fast Charging Activation Test Fixture” by Jageud.During those tests the board only managed to charge all three batteries to around 4.09Volt.
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I did not want to use my lab power supply but wanted to stay with equipment that others may have available as well. As a tinkerer by heart, I opted for an Apple charger as well as an Apple charge cable. I hacked the original 30 pin connector off and determine + and - wires
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I then connected the positive to positive and negative to negative directly to the prototype board, bypassing any communication etc. from the battery to the charger. Charging was monitored with a USB ammeter. All batteries were charged this way to around 4.24V. It is possible that this is where the battery protection prevents overcharging.
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After charging all the batteries I ran a constant current test on all batteries with my ZKETech EBC-A10H analyzer. The software is EB tester Software V1.8.5 All battery tests had the same parameter of a constant current draw of 0.6 Amp and a stop test voltage of 2.9V
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Results for the eBay battery Device:EBC-A10H Mode:D-CC 0.60A 2.90V Begin Volt:4.246V Cutoff Volt:2.900V Capacity:2778mAh Energy:10.09Wh Avg Volt:3.63V Title:eBay Seller
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Here is the iFixit battery data: Device:EBC-A10H Mode:D-CC 0.60A 2.90V Begin Volt:4.326V Cutoff Volt:2.900V Capacity:3055mAh Energy:11.20Wh Avg Volt:3.67V Title:iFixit
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7 の人々がこのガイドを完成させました。