In a month I will be flying to Costa Rica from Canada. I am working on a solar panel phone charger that will have a built in battery storage. The battery that will be used is a 2000mAh single cell LiPo battery. Is there's an regulations that will prevent me from bringing this battery on the plane?
Also, is there any restriction or suggestions on bring an homemade electronic to lower the chances of it getting flagged at airport security?