Note : 14.4V and 14.8V are compatible, they are in common use.

Product Features

Excellent Quality，Thorough Service

The replacement battery for IBM Fru 42T5251 from BatteryBuy.us will be your best choice. We offer the high quality laptop battery at a more reasonable price. Our IBM Fru 42T5251 batteries can be charged/discharged for at least 600 cycles. Being made of ABS plastic case and the original IC protection chip, it could give you new experience of excellent durability.

With first-class quality assurance, the battery for IBM Fru 42T5251 provides protections of voltage, short circuit, charging time, ESD, and so on. Each IBM Fru 42T5251 laptop battery has passed a series of safety certifications, such as CE, UL, ROHS, ISO9001/9002. It will be rigorously tested by our technicians before being shipped to your hands. We will try our best to select a high quality IBM Fru 42T5251 battery for you.

In addition, we provide a 30-day money back guarantee and a one-year warranty for you. If you have any dissatisfaction after receiving the battery for IBM Fru 42T5251, you can click the link to find more details about our Returns and Warranty service. Please rest assured to purchase from us！

Multiple Intelligent Protection

INTELLIGENT PROTECTION
VOLTAGE PROTECTION
SHORT CIRCUIT PROTECTION
ESD PROTECTION
OVER HEAT PROTECTION
OVER (DIS)CHARGE PROTECTION
CHARGING TIME PROTECTION
CLASS A PROTECTION

Product Larger Images

Compatible IBM Part Numbers

40Y7904
40Y8314
40Y8318
42T4639
42T4660
42T4661
ASM 42T5209
FRU 42T4507
FRU 42T5204
FRU 42T5206
FRU 42T5207
FRU 42T5208
FRU 42T5209
FRU 42T5250
FRU 42T5251
FRU 42T5259
FRU 42T5260
FRU 93P5031
FRU 93P5032

Compatible IBM Laptop Models

ThinkPad X60 Tablet PC 6363
ThinkPad X60 Tablet PC 6364
ThinkPad X60 Tablet PC 6365
ThinkPad X60 Tablet PC 6366
ThinkPad X60 Tablet PC 6367
ThinkPad X60 Tablet PC 6368
ThinkPad X60 Tablet PC
ThinkPad X61 Tablet PC 7762
ThinkPad X61 Tablet PC 7763
ThinkPad X61 Tablet PC 7764
ThinkPad X61 Tablet PC 7767
ThinkPad X61 Tablet PC 7768
ThinkPad X61 Tablet PC 7769
ThinkPad X61 Tablet PC

Shipping Methods

Payment Methods

Warranty

1-Year Warranty
All our high quality replacement batteries for IBM Fru 42T5251 laptop come with a 1-year warranty. Warranty is applicable if the buyer has installed the battery properly in the device and has treated the battery correctly.

30-Day Money Back Guarantee
Our goal is to turn customer satisfaction into ‘Complete Customer Satisfaction’. That's why we offer you a 30-day money back guarantee, on top of our warranty and RMA procedure for defects!
Please note: in order to qualify to get your money back, you must first contact us and await instructions before sending back your product.

Returns

If you have a problem with one battery which bought from us, please contact us first. We will process your request and try to find a solution for your problem. If the problem cannot be fixed by our technical support engineer, we will generate an RMA number (Return Material Authorization) for you. If inspection concludes that the returned battery is defective, a new battery will be shipped out without extra charge.
Please note: we cannot process returned batteries if you have not yet received an RMA number.

FAQs

Q: Is this IBM Fru 42T5251 battery compatible with my laptop？

A: Through product compatibility table, you can check if IBM Fru 42T5251 battery is compatible with your laptop. Clicking product larger Images, you can confirm the selected correctness of IBM Fru 42T5251 laptop battery. What’s more, please pay attention to check if the voltage (rated value) is the same as your old one. For more details please click How to find one correct battery for my laptop?

Q: How long will the IBM Fru 42T5251 battery last? When should I replace my battery?

A: All rechargeable batteries are being spoilt gradually from the date it starts running. Performance degradation will be found by users in 18-24 months. When the runtime is unable to meet your demand, we’d suggest you buy a new IBM Fru 42T5251 battery.

Q: How to charge my IBM Fru 42T5251 laptop battery correctly？

A: There is no need for you to charge the battery over 12 hours, just charge and discharge it normally instead. Because lithium-ion battery has no memory effect. Additionally, you should charge in time while the power remains only 10%-20%. If your battery won’t be used for a long time, please charge it once a month and keep battery power over 50%. Moreover, there is no harm even if you charge battery while using your laptop or supply external power in a fully-charged state. However, if your laptop has been running at high speed for a long time, which causes overheat insides, you'd better take the IBM Fru 42T5251 battery out of laptop.

Q: How to replace my IBM Fru 42T5251 laptop battery?

1 Turn off laptop and unplug the power cord.
2 Remove the battery release button, and then uninstall your old IBM Fru 42T5251 battery carefully.
3 Use a clean cloth to wipe off dust from the battery compartment. It’d be better if you could wipe the exposed conductive part, which connects battery and laptop, with alcohol to remove the copper rust before installing a new battery.
4 Keep your laptop and battery in a cool dry place (heat may destroy a battery).
5 Install new IBM Fru 42T5251 replacement battery into your laptop, and remember to close the battery latch.