Hi, I need any advice I could get at the moment, I made a 30 cell powerbank, 3S 10P Configuration. It charges phones as well as laptops, using buck and boost converters respectively. Phone charging works fine, although the laptop has a bit of an issue. My battery pack drops in voltage once a load gets connected, I think that's pretty normal but it drops so much whenever I try to charge my laptop, which tripsthe low voltage disconnect. Could this be a problem with the pack?, I used harvested cells from Old Laptop batteries. I tested them and they were pretty decent.