Which statement is correct?
1) Wheelchairs/mobility device aids with gel type batteries do not require the battery to be disconnected provided the battery terminals are insulated to prevent accidental short circuits.
2) Carbon dioxide, solid (dry ice) may be permitted on one's person provided the package permits the release of carbon dioxide gas.
3) Spare lithium metal or lithium ion cells or batteries, for consumer electronic devices such as cameras, cellular phones... are permitted in or as checked baggage only.