I didn't run a rectifier for like a year and it was fine... well, let me rephrase that. I did run a rectifier but it was just there doing nothing as it didn't charge sh#t so I had to charge the battery twice every track day, usually 3rd and 5th session. I did it whilst running one of those tiny LiPo batteries and it handled it like a champ (still have the battery and it still works like new!) not sure if the stock battery would have taken it so well.

Ps: Congrats on sorting that out!