6Cell and 9Cell SONY VGP-BPS26 VGP-BPS26A VGP-BPL26 Battery detail

Published on by love-battery.com zone

For cell balancing applications, it is only necessary to know the SOC of any cell relative to the other cells in the battery chain. Since all the cells will have been subject to the same influences during their lifetime, the ageing and environmental adjustments, which apply equally to all cells, can be ignored for this purpose.


4400mAh SONY VGP-BPS26 battery info:
Battery Type:  Li-ion 
Voltage:  10.8V
Capacity: 4400mAh / 6Cell
Weight:  351g
Size: 272.00 x 21.01 x 50.02 mm
Color: Black


The rapid fall in cell voltage at the end of the cycle could be used as an indication of imminent, complete discharge of the battery, but for many applications an earlier warning is required. Fully discharging Lithium cells will dramatically shorten the cycle life and most applications will impose a limit on the DOD to which the cell is submitted in order to prolong the cycle life. While the cell voltage can be used to determine the desired cut off point, a more accurate measure is preferred for critical applications.


Coulomb counting depends on the current flowing from the battery into external circuits and does not take account of self discharge currents or the Coulombic efficiency of the battery.


5300mAh SONY VGP-BPS26A battery info:
Battery Type:  Li-ion    in the pipeline
Voltage:  11.1V
Capacity: 5300mAh / 6Cell
Weight:  352g
Size: 272.00 x 21.01 x 50.02 mm
Color: Black


Kalman filtering addresses an age-old question: How do you get accurate information out of inaccurate data? More pressingly, How do you update a "best" estimate for the state of a system as new, but still inaccurate, data pour in? An HEV automotive application is an example of this situation. The battery SOC is affected by many simultaneous factors and is continually changing due to the user driving pattern. The Kalman filter is designed to strip unwanted noise out of a stream of data. It operates by predicting the new state and its uncertainty, then correcting this with a new measurement. It is suitable for systems subject to multiple inputs and is used extensively in predictive control loops in navigation and targeting systems. With the Kalman Filter the accuracy of the battery SOC prediction model can be improved and accuracies of better than 1% are claimed for such systems.


7950mAh SONY VGP-BPL26 battery info:
Battery Type:  Li-ion 
Voltage:  11.1V
Capacity: 7950mAh / 9Cell
Weight:  459g
Size: 272.00 x 41.01 x 50.02 mm
Color: Black

Compatible original Battery Code:


Fit machine:
SONY VAIO C Series SONY VAIO CA Series(All) SONY VAIO CB Series(All)


Consumer Battery Condition Indicators
Small primary cells are now available with a on-cell analogue SOC indicators known as battery testers or fuel gauges. On the side of the cell they incorporate a printed strip resembling a thermometer which provides a rough indication of the remaining capacity in the battery.

Published on Laptop Battery Review

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