HP HSTNN-LB2R battery Fit HP Probook 4331s 4431s laptop battery

In EV applications the SOC is used to determine range. It should be an absolute value based on capacity of the

battery when new, not a percentage of current capacity which could result in an error of 20% or more due to

battery ageing.
Automotive fuel guages are notoriously imprecise so an SOC accuracy of 5%, if it could be achieved, would

probably be satisfactory for such applications.

HP HSTNN-LB2R battery detail:

Battery Type:  Li-ion 
Voltage:  10.8V or 11.1V
Capacity: 47Wh / 6Cell
Weight:  363g
Size: 210.00 x 20.00 x 70.30 mm
Color: Black

The capacity of the cell at a given rate and temperature is the difference from the "Full" line and the

corresponding "Empty" line.

Fuzzy Logic and other similar models have been used to overcome these problems and ASICs have been developed for this purpose.

A theoretical calculation of the SOC will always be limited by number of effects for which equations can be

developed.

HP Probook 4331s battery Compatible original Battery Code:
HP/COMPAQ :
HSTNN-LB2R PR06 QK646AA

Charge Estimation Algorithms
Several different techniques such as Fuzzy Logic, Kalman Filtering, Neural Networks and recursive, self-learning

methods have been employed to improve the accuracy of the SOC estimation as well as the estimation of state of

health (SOH).

The design is completed with a masking layer of normal ink which provides the illusion of a thermometer or

analogue fuel gauge.

Q-Mag?
1, sensor installed on the side of a starter battery 
The sensor measures the SoC of a battery by magnetism. When discharging a lead acid battery, the negative plate

changes from lead to lead sulfate. Lead sulfate has a different magnetic susceptibility to lead, which a magnetic

sensor can measure.
2, may one day also assist in the consumer market to test batteries by magnetism. Placing the battery on a test mat, similar to charging a battery, may one day be possible.

HP Probook 4431s battery Fit machine:
HP/COMPAQ :
HP Probook 4330s Series HP Probook 4331s Series HP Probook 4430s Series
HP Probook 4431s Series HP Probook 4530s Series HP Probook 4535s Series
HP Probook 4730s Series