Batteria HP EliteBook 8730w non si carica

Ho sostituito la batteria del portatile in oggetto ieri e, dopo averla lasciata in carica, stamattina era circa al 78%. Dopo aver usato il portatile, la batteria si è scaricata ma non si carica più. Questo l'output di upower -d: Device: /org/freedesktop/UPower/devices/battery_BAT0 native-path: BAT0 vendor: Hewlett-Packard model: Primary serial: 00000 2017/11/15 power supply: yes updated: lun 26 feb 2018 19:26:28 CET (9 seconds ago) has history: yes has statistics: yes battery present: yes rechargeable: yes state: charging warning-level: none energy: 0 Wh energy-empty: 0 Wh energy-full: 67,5216 Wh energy-full-design: 63,36 Wh energy-rate: 0 W voltage: 13,931 V percentage: 0% capacity: 100% technology: lithium-ion icon-name: 'battery-caution-charging-symbolic'

Output di uname -a: Linux eugenio-HP-EliteBook-8730w 4.4.0-112-lowlatency #135-Ubuntu SMP PREEMPT Fri Jan 19 12:19:41 UTC 2018 i686 i686 i686 GNU/Linux

Output di lsb_release -a: No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 16.04.3 LTS Release: 16.04 Codename: xenial