Replacement 45N1742 11.25V 44Wh Battery for Lenovo ThinkPad W540 ThinkPad W541

45N1742 45N1743 44Wh Replacement Battery for Lenovo ThinkPad P50S T440P

Replacement 45N1742 11.25V 44Wh Battery for Lenovo ThinkPad W540 ThinkPad W541

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  • Product Code: 45N1742
  • Availability: In Stock
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  • AU$73.61
  • Ex Tax: AU$73.61

Replacement 45N1742 11.25V 44Wh Battery for Lenovo ThinkPad W540 ThinkPad W541

Battery Type: Li-ion, Battery Volt: 11.25 V, Capacity: 44Wh, Battery Color: Black, Warranty: 12 months

Compatible Model Numbers:

ThinkPad L440, ThinkPad L540, ThinkPad P50s, ThinkPad T440P, ThinkPad T540p, ThinkPad T550, ThinkPad W540, ThinkPad W541, ThinkPad W550s

Compatible Part Numbers:


Follow the notice below, Better using your Lenovo 45N1742 Laptop Battery

  1. Storage - Store your 45N1742 Laptop Battery in a clean, dry, cool place away from heat and metal objects. The Lenovo 45N1742 batteries will self-discharge during storage; remember stored at about 40% state-of-charge.
  2. Charge and discharge - For lithium ion batteries, you do not need to discharge them fully and recharge constantly. You need to do a full discharge only about every 30 charges. Do not charged to higher voltages than its threshold voltage
  3. Exercise Your 45N1742 Battery - Do not leave your batteries dormant for long periods of time. We recommend using the battery at least once every two to three weeks. If a battery has not been used for a long period of time, perform the new battery break in procedure described above.
  4. Calibrate Your batteries - If your Battery's 76% even less in work , you must fully charge, fully discharge, and then fully recharge the Laptop Battery pack.
    Consider removing the 45N1742 battery from a laptop when running on fixed power
  5. Do not short-circuit. A short-circuit may cause severe damage to the battery.
  6. Avoid propping your laptop on a pillow, blanket, or other soft surface that can heat up. Your 45N1742 battery is a lot less efficient when not within its standard operating temperature range.


  • If the capacity is low in current,CPU will be in electricity-saving model and battery can not be charged.In this case,take off the battery and fit on to rouse the CPU. The 45N1742 battery can be charged then.
  • Remove the battery when don't use if for long time,or the currency will be lost and the cell will be damaged.
  • Recharge the battery as the circle more than once per month to make the management of capacity reach its best status, and prolong Lenovo  45N1742 Laptop Battery useful life.


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