Note : 1. 14.4V and 14.8V are compatible, they are in common use. 2. 10.8V and 11.1V are compatible, they are in common use. 3. the 10.8V(=11.1V) and 14.4V(=14.8V) are the different voltages, they are not compatible, please choose the right battery(Voltage) for your laptop. 4. The 6600mAh(9 Cells) battery will extend out about 1 inch from the back of the laptop, bigger size but lasting longer.

Product Features

Excellent Quality，International Standards

BatteryBuy.co.uk is your best choice of high quality IBM laptop batteries! The brand new 4400mAh(6 cells) replacement IBM Fru 42T4531 Li-ion battery is made with superior quality cells from Samsung, Panasonic and LG to ensure the best performance. IBM Fru 42T4531 battery case is made of non-flammable and durable plastic, which is fire-retarded and non-perishable when dropped from low heights.

We are very strict with the safety requirements. Every our high-grade replacement battery for IBM Fru 42T4531 laptop has been tested to prove that they can match or surpass original IBM battery performance and be 100% compatible with Original Manufacturer Specifications. In compliance with international standards, they have obtained a series of rigorous safety certifications such as CE, UL, ROHS, ISO9001/9002. In general, this replacement IBM Fru 42T4531 battery can be charged/discharged up to more than 600 cycles.

Buy with Confidence! All our IBM Fru 42T4531 batteries carry a One-Year warranty and a 30-day money back guarantee if you are not completely satisfied. What’s more, Each IBM Fru 42T4531 battery will be charged and tested before shipment. When you buy our products, you're buying trust! If you have any question, please contact us freely! It is our pleasure to help you solve problems.

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

41U3196
41U3197
41U3198
43R2499
ASM 42T4533
ASM 42T5226
ASM 42T5228
ASM 42T5265
FRU 42T4530
FRU 42T4531
FRU 42T4532
FRU 42T4548
FRU 42T4645
FRU 42T5225
FRU 42T5227
FRU 42T5229
FRU 42T5230
FRU 42T5262
FRU 42T5263
FRU 42T5264
FRU 42T5265

Compatible IBM Laptop Models

ThinkPad R400 7443
ThinkPad R400
ThinkPad R61 (14.1 INCH WIDESCREEN)
ThinkPad R61 7732
ThinkPad R61 7733
ThinkPad R61 7734
ThinkPad R61 7735
ThinkPad R61 7736
ThinkPad R61 7737
ThinkPad R61 7738
ThinkPad R61 7742
ThinkPad R61 7743
ThinkPad R61 7744
ThinkPad R61 7751
ThinkPad R61 7753
ThinkPad R61 7754
ThinkPad R61 7755
ThinkPad R61I (14.1 INCH WIDESCREEN)
ThinkPad R61I 7732
ThinkPad R61I 7742
ThinkPad T400 2764
ThinkPad T400 7417
ThinkPad T400
ThinkPad T61 (14.1 INCH WIDESCREEN)
ThinkPad T61 1959
ThinkPad T61 6377
ThinkPad T61 6378
ThinkPad T61 6379
ThinkPad T61 6480
ThinkPad T61 6481
ThinkPad T61 7658
ThinkPad T61 7659
ThinkPad T61 7660
ThinkPad T61 7661
ThinkPad T61 7662
ThinkPad T61 7663
ThinkPad T61 7664
ThinkPad T61 7665
ThinkPad T61P (14.1 INCH WIDESCREEN)
ThinkPad T61U(14.1 INCH WIDESCREEN)

Shipping Methods

Payment Methods

Warranty

1-Year Warranty
All our high quality replacement batteries for IBM Fru 42T4531 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: How to check whether this battery is compatible with my laptop?

A: First, find out your old battery part number (e.g. 'IBM Fru 42T4531') or the model name of laptop and then match with our product compatibility table. Second, please compare your old battery with our product images to make sure their shapes are the same. Lastly, check the voltage (rating) is the same as the old one. For more details please click How to find one correct battery for my laptop?

Q: How to charge my IBM Fru 42T4531 battery properly?

A: There is no need to charge your new IBM Fru 42T4531 battery for 12 hours for the first time use, because lithium-ion battery is with no memory effect. So you only need to charge and discharge it normally. What’s more, you should avoid recharging it till exhausting battery power, because it will bring to much damage. Therefore you have to charge it when remaining power is nearly 10-20%. Additionally, if your battery has not been used for a long time, please charge it once a month, keep the remaining power about 40% and then store it in a dry and cool environment.

Q: Is it necessary to remove my IBM Fru 42T4531 battery when connecting to the power supply?

A: In general, it will not cause any damage without removing battery when the laptop connects the power supply. The battery will not be charged anymore after it is fully charged. On the contrary, it will turn to the use of power supply system. However, when your laptop has run for a long time at high speed, you’d better remove battery out of laptop due to the internal overheating.

Q: A few Tips to maintain your IBM Fru 42T4531 battery and extend its life:

1 Avoid Full Discharges.
2 Tweak Your Built-In Power Saving Options.
3 Disable unnecessary programs that draw energy from your notebook.
4 Adjust the brightness of your laptop display as much as possible within an acceptable range.
5 Keep your laptop and battery in a cool dry place (heat may destroy a battery).