Energizer Ultimate Lithium batteries are the recommended batteries for GPS use.
Batteries for Extreme Temperatures
Energizer Ultimate Lithium batteries perform even in extreme temperatures of -40°C to 60°C (-40ºF to 140ºF) (great for Canadian weather!).
Extra Long Battery Life
Lithium batteries last approximately 3 times longer than alkaline batteries in GPS equipment (depending on usage) and up to 7 times longer in digital cameras.
Performs well even after up to 10 years storage! To ensure extra long life, store unused batteries in E-Snap re-closable pack.
USER TIP: Is your Garmin shutting off with fresh batteries?
If your Garmin x series receiver shuts off when using fresh lithium batteries, try discharging the batteries in another device for a short time. Uninterrupted GPS use should then be assured.
Click here to view Energizer Lithium L91 Battery Application Manual (PDF).