Everyone says this ego 100omah batt. connects to reg 510 devices I can't get the inner threads on the batt to screw into my njoy npro cartomizers are they diff?
I went through this hell a while back. The NPro is not 510-compatable. This issue led to a two-day nic fit for me, as well as a brief analogue session. But you'll be better off with the 510 system. There are soooooo many cartos & gadgets for it.
There are a few different thread counts and styles out there. Did you try multiple devices and check to see if the threading is damaged in any way? Thread are about as fragile as glass and can easily be damaged.
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