Below is from Air Canada:
Lithium metal or lithium ion cells and batteries
Portable electronic devices with lithium metal or lithium ion cells or batteries, such as watches, calculating machines, cameras, cellular phones, laptop computers*, camcorders, etc., are accepted under the following conditions:
- Lithium metal or alloy cells and batteries:
- Only lithium metal cells or batteries with a maximum lithium content of 2 grams are allowed.
- The following are allowed in carry-on baggage only*:
- Consumer electronic devices containing accepted lithium metal cells or batteries;
- Spare lithium metal cells or batteries (in reasonable quantities).
- Batteries must be individually protected to prevent short circuits, e.g. exposed terminals can be taped over, each individual battery can be in a protective pouch or separate plastic bag, or batteries can be in their original retail packaging.
- Lithium ion cells and batteries up to 100 Watt Hours (Wh) each
- The following are allowed in carry-on baggage only*:
- Consumer electronic devices containing accepted lithium ion cells or batteries with a rating of not more than 100 Wh each;
- Spare lithium ion cells or batteries with a rating of not more than 100 Wh each.
- Lithium ion batteries with a rating of 100 but not exceeding 160 Watt Hours (Wh)
- A maximum of two (2) individually protected spare lithium ion batteries with a rating of 100 Wh but not exceeding 160 Wh may be carried per passenger in carry-on baggage only*, pending approval by Air Canada airport agents.
Alkali-manganese (alkaline), Zinc-carbon (dry cell), nickel metal hydride (NiMH), nickel cadmium (NiCd) and silver oxide batteries (Non lithium)
- Such batteries are allowed in carry-on baggage only*.
- Batteries must be individually protected to prevent short circuits, e.g. exposed terminals can be taped over, each individual battery can be in a protective pouch or separate plastic bag, or batteries can be in their original retail packaging.
Batteries used to power portable battery-powered medical devices
Batteries used to power mobility aids
- Spillable and non-spillable batteries for battery-powered mobility aids (e.g. wheelchairs) are accepted in checked baggage, but require special handling. See our wheelchair and mobility aid page for more information.
* On smaller aircraft (e.g. Jazz Dash-8 or CRJ) with limited onboard storage space, you’re asked to deposit your carry-on items on a cart as you board the plane. Battery-powered devices and spare batteries must always be removed from carry-on baggage that is deposited on such carts and carried into the aircraft cabin.