If you have experience with batteries in general, or LiPo specifically, you know all batteries are NOT made equal. Production standards vary, LiPo battery (cells) quality varies. From what I understand, the Breeze charger balances the cells in the battery the last few minutes. Here’s what to watch for; if these batteries take longer to balance, like 2X+, watch them close. Touch them for excessive heat when charging. A battery is made up of “cells” and the number of cells determines the battery voltage. If the cells are not matched properly you are asking for trouble. I’m not saying these batteries are, or are not, made well, but you are literally risking your house burning down if you don’t pay attention. Watch a few YouTube videos on LiPo fires. These batteries are not toys, treat them with respect.