Ver. 1 goes to sleep after just a couple of minutes but wakes on movement - it has a motion sensor embedded in it. That's why it drains if attached to the iPad case and carried around. Mine drains very slowly if just left sitting there.
Hmm... So maybe nothing has changed after all. I just don't recall the ver. 1 Pencil disconnecting and going into low-power sleep mode as fast as the v.2.
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The problem with gen 1 was that people who carried it around in their bag etc often found it drained of battery because it was constantly in motion. Gen 2 is pretty much the same situation except now you have the theoretical option of keeping the pencil attached to the ipad (charging) while carrying it around. The problem with that is the pencil reportedly does not stay attached to the ipad when carried around in a bag (I don’t have 2nd gen). The workaround for both gens is to toggle on/off airplane mode on the ipad to disconnect the pencil, then pair the pencil again each time. Some sort of off/on switch on the pencil would be much more preferable.
Yes, that was indeed the original issue - and nothing has changed there. Also, the Pencil attached to the new iPad Pro massively drains the battery on the iPad itself when left there.