Aloha y'all. A while back I started a thread about my 5 new 180 calbs discharging down to 0.7v while the rest of the pack was over 3.2v or so after I came back from 70 miles. Nothing was figured out and Calb position was tough luck, since you do not have a BMS, there is no warranty. I was reluctantly going to accept this because 4 cells took a charge and came right back up and have been cycled 7-8 times and are acting fine. Yesterday I went 100 miles and this morning I checked every cell and ALL were 3.26 or 3.27v. An hour later the previously defective cells ranged in voltage from 1.2v down to 0.7v. They self-discharged as there was no load on them. I feel they are defective and emailed Keegan and the factory in China, so we will see how I am treated.