i want to build a lithium powered solar pest repeller, ive done quite a bit of research and am stumped on a few points, as i live in canada i cannot buy tone generators, standard lithium chargers and also outdoor pest conrollers lol. , only lithium chargers i can get are phone chargers legally in canada,
i dont need to use the exact parts here,

this is for a large area in an orchard so i will probably need to build 4-6 of these.

• this says its 100watts, but i have no idea what power usage it will have at 20000hz on for 2s off for 5s , would i need a seperate amplifier to power this? perferably something smallish so i can put it into a waterproof irrgation box- Blast King 73B0050 3.34-Inch Piezo Tweeter https://www.ebay.ca/itm/322895150352

• this is the only charger i can get, but need to run 2s batteries for 7.2v to power arduino - 5v lithium charge controller https://www.newegg.ca/Product/Produ...nF3LYDFwzTwhdf3dwpVUHjMextFATUtBoClSsQAvD_BwE

• this arduino states it needs 5v to 9v so i need to run 2s lithiums . https://www.newegg.ca/Product/Produ...nF3LYDFwzTwhdf3dwpVUHjMextFATUtBoClSsQAvD_BwE
• i also have protected 18650 4000mah lithiums to use

am i taking the right approach to this or any ideas of a simpler way to do this?
-Ryan

 

i think im going to end up going this route, https://appleorchard.ca/wp-content/uploads/2017/12/rodent-repeller.pdf
a couple parts on there are for a different project