Even though all of the cell parameters the design engineer may wish to measure can be quantified by direct measurement, this is not always convenient or possible. For example the amount of charge left in the battery, the State of Charge (SOC) can be determined by fully discharging the battery and measuring the energy output. This takes time, it wastes energy, each test cycle shortens the battery life and it may not be practical if the battery is in use. It would also be pointless for a primary cell. laptop battery Similarly, the remaining life of a secondary cell can be determined by continuously cycling it until it fails, but there's no point in knowing the cell life expectation if you have to destroy it to find out. This is known as the State of Health (SOH) of the battery. Original Laptop Battery Battery testing is designed to tell us things we want to know about individual cells and batteries. During the test we need to pay attention to some questions. Some typical questions are: a. Is it fully charged? b. How much charge is left in the battery? c. Does it meet the manufacturer's specification? d. Has there been any deterioration in performance since it was new? e. How long will it last? f. Do the safety devices all work? g. Does it generate interference or electrical noise? http://www.originalbatterydeals.com
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