IBM 42T5225 42T5227 42T5262 42T5264 42T5229 laptop battery Replacement for IBM Lenovo ThinkPad T61/R61/R61e /R61i series Laptop

42T5225
42T5227
42T5262
42T5264
42T5229
IBM LENOVO :
41U3198
ASM 42T5265
FRU 42T5262
FRU 42T5264

ThinkPad T61p Series (14.1" widescreen)
ThinkPad T61 Series (14.1" widescreen)
ThinkPad R61 Series (14.1" widescreen)
ThinkPad R61i Series (14.1" widescreen)

Warning: incompatible with the models below:
ThinkPad R61 Series (14.1" & 15.0" standard screens and 15.4" widescreen)
ThinkPad T61p Series (14.1"standard screens and 15.4"widescreen)
ThinkPad R61e Series (15.4"widescreen)
ThinkPad T61 Series (14.1"standard screens and 15.4"widescreen)
ThinkPad R61i Series (14.1" & 15.0" standard screens and 15.4" widescreen)
LENOVO
ThinkPad R400 7443    ThinkPad R400 Series
ThinkPad R61 7732    TninkPad 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 7732    ThinkPad R61i Series (14.1"" widescreen)
ThinkPad R61i 7742    ThinkPad R61 Series (14.1"" widescreen) ThinkPad T400 2764
ThinkPad T400 7417    ThinkPad T400 Series
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 Series (14.1"" widescreen)
ThinkPad T61 Series (14.1"" widescreen)

Ever been on a long flight, ready to hunker down and get some work done, only to discover that your IBM 42T5225 laptop battery is plunging toward the red zone an hour after takeoff? So have we. That's why we've gathered these simple tips that will preserve your notebook's juice and boost your productivity. Read them now. You'll thank yourself later.

1. Sleep Is Good. Use the operating system's power-management features (in Windows XP, under Power Options in the Control Panel; or in Vista, under Mobile PC in the Control Panel) to set aggressive targets for when the display will go dark and when the machine will slip into sleep mode. And if you can spare the extra time it takes for the machine to resume, set the PC to hibernate, not just sleep, when you close the lid.
2. Dim the Lights

Turn down the brightness of the LCD panel to the lowest level you can tolerate. The backlight sucks power like the Rockefeller Center Christmas tree.

3. Watch Scheduled Tasks

Be sure that your periodic virus scan is set to a time when you're usually plugged in; running a full-disk virus check keeps the hard drive and CPU fully engaged for the better part of an hour

4. For lithium ion IBM 42T5225 laptop battery, you do not need to discharge them fully and recharge constantly. Since they don't have the same "memory" as older nickel-metal hydride IBM 42T5225 laptop battery, it is actually better to discharge a lithium ion only partially before recharging. You need to do a full discharge only about every 30 charges.
5. Lay Off the Multimedia

A little in-flight music is nice while you construct that PowerPoint presentation, but streaming music from your hard drive means the disk is always spinning.