SONY PCGA-BP2E Battery Review

6-Cell Lithium-Ion SONY PCGA-BP2E Battery (Sony PCGA-BP2E, Sony HL-SYVGR-LI, Sony 175619881)
* Li-ion, 4400mAh capacity, 11.1V
* Factory direct price, 1 Year Warranty, 30 Days Money Back.
* Powers up your system for business trips and vacations

Fits laptop model:
SONY A17GP SONY K76P SONY VAIO GR100 SERIES SONY VAIO GR200 SERIES SONY VAIO GR300 SERIES SONY VAIO PCG-GR100 SONY VAIO PCG-GR150K SONY VAIO PCG-GR170K SONY VAIO PCG-GR18C SONY VAIO PCG-GR200 SONY VAIO PCG-GR200P SONY VAIO PCG-GR25 SONY VAIO PCG-GR250 SONY VAIO PCG-GR250K .....

This SONY PCGA-BP2E Battery gives me 3 hours of power which my other one only gave me 2. But It's too expensive. Allows me an additional 2.5 hours of use. Must be swapped with computer turned off . Cost a lot of $$$$$$$. I was told original battery would last 6 hours and it only lasts 2.5 hours as does this one. Should be able to have 2 batteries connected at same time or a battery to computer power cable so that I don't have to turn off the computer when using second battery. Would be nice to piggy back them so you did not have to turn off computer to change, also a charging station for the spare would be handy.