I think it's that he can remove the battery easily
Makes it easy to ride somewhere and chain up the bike and take the battery away, stop it getting nicked, maybe recharge it.
And, frankly, for the use he proposes for it the one battery is sufficient. It's a good proof-of-concept.
(
garold you're on mute I SAID YOU'RE ON MUTE, Mon 14 Jun 2021, 16:48,
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