I have a rotation of 2 x MNKE 20AMP and 2 x Efest 30AMP, all 18650 and bought from CVS and Skyblue... Swap out once in the afternoon and once just before bed. I charge at 3.7 to prolong overall life. Builds are usually between .8-1.2 ohm
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Yep, people are so used to the old Ni-Cd batteries that you had to drain completely and then charge overnight that they think the same holds true for these batteries, whereas in fact they will last longer if you don't charge them fully and also not let them drain fully