5 ms·

I imagine 18650 cells will also be easy to find for the foreseeable future.

• maxfurman 5y ago
  Available, maybe, but not at the same level of ubiquity as AA.
  • wtallis 5y ago
    Ubiquity isn't the requirement here, since the use case under discussion isn't buying pre-charged batteries at the local brick and mortar store, but merely easy sourcing of a replacement rechargeable battery when the existing one will no longer hold a charge. 18650s are certainly commoditized enough to fulfill that purpose, unlike proprietary LiPo packs.
• babypuncher 5y ago
  In theory yes, but they are quite a bit larger than AAs, so a significant redesign of the shell and battery compartment would be needed to accommodate them. They would also make the handheld bulkier and heavier. Meanwhile, these devices are already designed to accept AA batteries.