IBM Thinkpad t40 Laptop Battery – IBM Thinkpad t40 Series Lithium-ion Battery

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4400mAh/49WH Thinkpad t40 Series Battery Compatible with Battery Code:

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71WH Thinkpad t40 Series Battery Compatible with Battery Code:

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4400mAh/49WH Thinkpad t40 Series Battery Fits Laptop Computer Models:

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71WH Thinkpad t40 Series Battery Fits Laptop Computer Models:

IBM Thinkpad t40 Series Battery Maintenance & Tips

1. New battery for IBM Thinkpad t40 Series usually maintains a discharged condition with very low capacity. It is highly recommended to fully charge new battery packs before using.
2. The new IBM Thinkpad t40 Series battery pack needs to be circled (fully discharged and recharged) three to five times to reach its optimum performance.
3. IBM Thinkpad t40 Series battery will undergo self-discharging when left unused for a long period of time. Thus, it should always be stored in a fully charged state and kept in a cool, dry and clean place.
4. It is normal if the new IBM Thinkpad t40 battery gets warm when being charged or used. However, please pay special attention if the battery pack becomes excessively hot. This may indicate there is a problem with the charging circuit of the electronic device. Please consult a qualified technician if necessary.
5. To maintain the optimum performance of IBM Thinkpad t40 Series battery pack, it is highly recommended to circle (fully discharging and recharging) it at least once a month.
6. New batteries are hard to be charged. Sometimes, your electronic device may indicate a fully charged condition about 10 to 15 minutes when IBM Thinkpad t40 battery pack is being charged for the first time. When this happens, remove the battery pack and let it cool down for about 10 to 15 minutes then repeat the charging procedure. Sometimes, the new Thinkpad t40 Series battery will suddenly refuse to be charged. If this happens, a suggested solution is trying to remove the battery from the device and insert it again.