How to optimise battery usage on Galaxy Note9?

Last modified : Aug 27. 2018
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You can optimise battery performance through Device Maintenance: 

Device Maintenance
1 Launch the Settings app and then tap on Device maintenance.
2 Tap on Battery > SAVE POWER. Unused applications will be put to sleep.

Basic device charging tips

  • Use only Samsung-approved chargers, batteries, and cables. Unapproved chargers or cables can cause the battery to explode or damage the device.
  • Connecting the charger improperly may cause serious damage to the device. Any damage caused by misuse is not covered by the warranty.
  • Use only USB Type-C cable supplied with the device. The device may be damaged if you use Micro USB cable.
  • When using the wireless charger, do not place foreign materials, such as metal objects, magnets, and magnetic stripe cards, between the device and the wireless charger. Especially, do not place cards such as RFID card , credit card, Door lock card between device and back cover. The device may not charge properly or may overheat and may cause damage the device.
  • Use only Samsung-approved chargers, batteries, and cables. Charge-related products affect a direct impact on the safety of the user, so be careful when selecting the product. Unapproved chargers including Car chargers or cables may cause the performance problems and malfunctions or damage the device that are not covered by the warranty.  
  • Using Non Samsung-approved products (eg. wireless charger, USB cables, car chargers, Micro USB Connector, USB power adaptor) that are not guaranteed to be compatible may cause damage to the product.
  • If the lower part of the device overheats, it could be because the connected USB cable is damaged.
  • Replace the damaged USB cable with a new Samsung-approved one.
  • Be careful not to let foreign objects into the charger connector (connector, plug). It may cause overheating due to corrosion or temporary short-circuit of power terminal.
  • If you charge the device while the multipurpose jack is wet, the device may be damaged. Thoroughly dry the multipurpose jack before charging the device.
  • During wireless or wired charging, the device and the charger may become hot. And, if the device heats up or the ambient air temperature rises, the charging speed may decrease automatically. If the battery hits a certain temperature while charging, charging algorithm to protect device overheating operates and accordingly the charger may stop charging. This is a normal operating condition to prevent damage to the device. Wait for the device to cool down and then begin charging the device again.

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