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None of the above.
If you want the battery gauge to be accurate you need to follow the procedures of
1) FULLY CHARGING the battery the first time. (this is why 12 hours -- just to be certain)
2) LET IT FULLY DISCHARGE before charging for several cycles. (this is to let the software learn where the discharge level is at)
If you plug in your reader every day or two anyway NONE of THIS Matters. The only reason for following this process is so the battery gauge reasonably matches the actual state of charge of the battery. It will not cause your battery to fail sooner or later and will not affect its capacity or duration.
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