Hello, i purchased aftermarket battery, claims 5 Ah or more (compared to my previous Li-Ion 1,8 Ah), but it seems the robot cant sense it is charged, so what happens is i reset robot, batt shows full, then it start vacuuming daily, one cycle is around 1 h and the battery is slowly draining even put on dock. It comes to the situation that the robot would not start due to empty batt, but when i reset the robot, it shows full batt again. Weird. I also opened the doct, when the robot is vacuuming, there is around 3 V on the pads, then, when it parks at the dock, it jumps to 20 V and then when robot decides to charge, it drops to around 14 to 17 V depends on how empty is the battery.