Looking after your laptop battery

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Looking after your battery

Never completely drain your battery by repeatedly turning your laptop back on after it has shut down due to low battery power. Doing this will mean that the safety circuit inside your battery pack may lose power and the safety switch may permanently disable the battery.

  1. Once run in, avoid frequent full discharges because this puts additional strain on your battery. It is better for your battery to only partially discharge it several times and recharge it frequently (rather than one full discharge). Recharging a partially charged lithium-ion battery does not cause harm because there is no memory. Short battery life in a laptop is mainly caused by heat rather than charge / discharge patterns.
  2. Your laptops battery meter should be calibrated by applying a deliberate full discharge and recharge once every 30 charges. If ignored, the battery meter will become increasingly less accurate and in some cases turn off the laptop prematurely.
  3. Keep the lithium-ion battery cool and avoid keeping it in a hot vehicle. For prolonged storage, keep your battery at 40% charge and store for no longer than 30 days without using it. Failure to follow this instruction may result in your battery not being able to be recharged.
  4. Consider removing the battery from a laptop when running on fixed power as this reduces the batteries exposure to heat from the laptop. The use of an older battery to act as a back up against power failure is recommended.
  5. If you have a spare lithium-ion battery, you should use one most of the time but make sure you use the spare at least once every 30 days.

For best results, store the spare battery at 40% state-of-charge and in a cool place. Please be aware that your laptop’s battery meter will still be calibrated to your main battery (not your spare battery) so unless you run in the spare battery (see earlier instructions) the laptop may cut off prematurely.

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