Battery model recommendation

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@NightIsland

Can anyone point me at something worth buying?

any 18650 of capacity 3000 – 3500 mAh

even the cheapest and the fakest one should work okay in picocalc

PicoCalc 18650 battery advice?

My PicoCalc has been dispatched but I’m a complete amateur when it comes to 18650 batteries and am looking for some advice. I’ve seen other battery threads here but they mostly relate to other ClockworkPi products so I want to make sure my understanding is correct for the PicoCalc. From what I can see, 18650 batteries come in unprotected and protected form, with the protected units having some overcharge protection circuitry embedded in the cell. Other threads suggest the protected cells are sl…