Battery status shows "Estimating..." when fully charged

My battery is fully charged and it shows 100%. When it's connected to charger, Battery symbol changes to battery-missing-symbol. It also shows "Estimating..." for time remaining.
I'm using "Asus VivoBook x510uf"
My battery status when connected to AC power:

$ upower -d
Device: /org/freedesktop/UPower/devices/line_power_AC0
  native-path: AC0
  power supply: yes
  updated: Thu 04 Apr 2019 08:26:58 PM +0430 (-11482 seconds ago)
  has history: no
  has statistics: no
  line-power
    warning-level: none
    online: yes
    icon-name: 'ac-adapter-symbolic'

Device: /org/freedesktop/UPower/devices/battery_BAT0
  native-path: BAT0
  vendor: ASUSTeK
  model: ASUS Battery
  power supply: yes
  updated: Thu 04 Apr 2019 05:14:53 PM +0430 (43 seconds ago)
  has history: yes
  has statistics: yes
  battery
    present: yes
    rechargeable: yes
    state: pending-charge
    warning-level: none
    energy: 40.367 Wh
    energy-empty: 0 Wh
    energy-full: 40.367 Wh
    energy-full-design: 43.046 Wh
    energy-rate: 0 W
    voltage: 11.55 V
    percentage: 100%
    capacity: 93.7764%
    technology: lithium-ion
    icon-name: 'battery-full-charging-symbolic'
  History (charge):
    1554393418 0.000 unknown
  History (rate):
    1554393418 0.000 unknown

Device: /org/freedesktop/UPower/devices/DisplayDevice
  power supply: yes
  updated: Thu 04 Apr 2019 08:26:58 PM +0430 (-11482 seconds ago)
  has history: no
  has statistics: no
  battery
    present: yes
    state: unknown
    warning-level: none
    energy: 40.367 Wh
    energy-full: 40.367 Wh
    energy-rate: 0 W
    percentage: 100%
    icon-name: 'battery-missing-symbolic'

Daemon:
  daemon-version: 0.99.7
  on-battery: no
  lid-is-closed: no
  lid-is-present: yes
  critical-action: HybridSleep

---------------------

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: gnome-shell 3.28.3-0ubuntu0.18.04.4
ProcVersionSignature: Ubuntu 4.18.0-17.18~18.04.1-generic 4.18.20
Uname: Linux 4.18.0-17-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.6
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Thu Apr 4 17:04:22 2019
DisplayManager: gdm3
InstallationDate: Installed on 2019-03-30 (4 days ago)
InstallationMedia: Ubuntu 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210)
SourcePackage: gnome-shell
UpgradeStatus: No upgrade log present (probably fresh install)