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Li-ion IBM Thinkpad X21 Battery

This battery have two packs,fit modle:IBM Thinkpad XSeries X20 X21 X22 X23 X24 Series
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IBM laptop X21 battery

VAT: Free

  • Chemistry: Li-ion
  • Volts: 11.1V
  • Capacity: 4400mAh
  • Dimension: 208.80x50.84x19.50mm
  • Net Weight: 293.00g
  • Note:1 Year Warranty, 30 days money back
Better together

Buy IBM Thinkpad X21 Battery 4400mAhand DC Adapter 80W Together(save £1.00!)

  • IBM X21-battery




IBM Thinkpad X21 4400mAh Compatible Thinkpad Battery Code:

  • APS BL1145
  • Fedco L18650-6TPX
  • IBM 02K6651
  • IBM 02K6652
  • IBM 02K6653
  • IBM 02K6678
  • IBM 02K6679
  • IBM 02K6758
  • IBM 02K6759
  • IBM 02K6760
  • IBM 02K6761
  • IBM 02K6837
  • IBM 02K6838
  • IBM 02K6839
  • IBM 02K6845
  • IBM 02K6846
  • IBM 02K6852
  • IBM 02K6854
  • IBM 08K8024
  • IBM FRU 02K6652
  • IBM FRU02K6653
  • IBM IB-X/L
  • IBM 02K6710

Thinkpa X21 4400 mAh Compatible Thinkpad Battery:

  • IBM THINKPAD X SERIES
  • IBM THINKPAD X20 SERIES
  • IBM THINKPAD X21 SERIES
  • IBM THINKPAD X22 SERIES
  • IBM THINKPAD X23 SERIES
  • IBM THINKPAD X24 SERIES
How to charge New IBM laptop Battery?

All of our IBM laptop battery are have passed stringent quality assurance procedures and achieve international standards CE, UL Listed, and/or ISO9001/9002 certification. NOt satisfied return the product(s) to us within 30 days

On the first charge, your IBM laptop battery may indicate that charging is complete after a short period of around 15 mins. This is to be expected - simply remove the IBM Thinkpad X21 Batteries from the laptop and repeat the charging procedure. You should then use your laptop - WITHOUT the assistance of mains power, until the battery completely runs down. it is very important see why ?

Repeat the above procedure around 4 times in total over the course of the next few days - make sure you allow you IBM ThinkPad Battery sufficient time to get a full charge, normally an overnight charge will suffice.

When the IBM ThinkPad Battery is fully conditioned, the battery charger indicators and LEDs on your laptop and charger will work reliably. Also - as the battery will be taking on much more charge, the total charge time will be longer.

Occasional Maintenance

Simply run your unit until it’s FULLY discharged and then fully charge again. After extended periods of non-use, you should do the same. Lots of little charges followed by partial discharge will decrease the life, performance and capacity - in reality though, this is how laptops are usually used and this may be unavoidable


If you are unsure about the compatibility of the batteries, please click here to contact us

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