It has probably been discussed previously, but it may meet the description of a prohibited weapon. In this case the baton looks like it may not be included because of its overall length. However, the context in which it is carried may be a concern so you should donfurther search of section 88 of the criminal code. Does anybody have any other info on this?
https://en.m.wikibooks.org/wiki/Canadian_Criminal_Law/Offences/Weapons_Offences/Print_version
5. Any device that is designed to be capable of injuring, immobilizing or incapacitating a person or an animal by discharging an electrical charge produced by means of the amplification or accumulation of the electrical current generated by a battery, where the device is designed or altered so that the electrical cdharge may be discharged when the device is of a length of less than 480 mm, and any similar device.
Anybody in possession of anything weapon like should be familiar with this:
https://scc-csc.lexum.com/scc-csc/scc-csc/en/item/2158/index.do
https://en.m.wikibooks.org/wiki/Canadian_Criminal_Law/Offences/Weapons_Offences/Print_version