We bought two units. Arrived one day earlier than expected, but we unboxed them yesterday (thursday 08/22) because we were out of the country until then. Found little to no scratches on both, screen was perfect. All is working fine on both except the battery of one of them. Firstly it will not allow laptop to boot even if it is connected. Swapping batteries between them allowed me to turn on that laptop. Then with laptop connected and on close the lid until it goes to sleep, repeat one more time the swap process to finally open lid to wake up windows and find that the battery of this laptop shows a message on windows "0% remaining". After hours connected with closed lid it shows the same message. When I doubble click the battery icon on windows it shows up the message "Battery 2: 0% and not charging". I searched HP Support page and did all recommendations for problems similars to this but nothing make it work. I thougt that I needed to change the battery, but finally noticed that the it's charger was Dell charger (see attached picture) instead of HP, with apparently compatible plug but not able to charge the battery.