1% per hour seems a bit high but with aftermarket batteries, you never really know. The problem with batteries is that making them is like baking; you apply the same recipe and ingredients but you never really know what you get until you take it out of the oven :>).
What I would do is a discharge test with a constant current load, or even better, a constant power load. Here is an example of a constant current discharge test (@ 0.1C) I did with an iPad Air battery that I suspected as being a so-so battery.
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[image|1535063]
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[image|1535066]
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The results were pretty good and I went ahead and replaced it. You can use a tool like this to do this test and it’s a great way to test batteries offline, perfect for checking if the new supplier is sending you good batteries.
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The results were pretty good and I went ahead and kept it (it was only 20 minutes shy of my benchmark). You can use a tool like this to do this test and it’s a great way to test batteries offline, perfect for checking if the new supplier is sending you good batteries.
1% per hour seems a bit high but with aftermarket batteries, you never really know. The problem with batteries is that making them is like baking; you apply the same recipe and ingredients but you never really know what you get until you take it out of the oven :>).
What I would do is a discharge test with a constant current load, or even better, a constant power load. Here is an example of a constant current discharge test (@ 0.1C) I did with an iPad Air battery that I suspected as being a so-so battery.
[image|1535063]
The results were pretty good and I went ahead and replaced it. You can use a tool like this to do this test and it’s a great way to test batteries offline, perfect for checking if the new supplier is sending you good batteries.