Left my keys in the on position on my 06 Suzuki c50 and it killed my battery what a dumb move by myself

I purchased a battery charger from Walmart and really want to know if it will be suffice enough to charge my battery. Is it too much? Is it just right? Should I remove my battery from my bike? Or will it be fine to plug in leave in bike and go? Been riding since September of last year and never had to charge my battery. I ride snow, rain, and sunshine. Haha any help would be appreciated I’ll provide the link so you guys can see exactly what I purchased. via /r/motorcycles https://www.reddit.com/r/motorcycles/comments/c6sjvb/left_my_keys_in_the_on_position_on_my_06_suzuki/?utm_source=ifttt