dell laptop battery

The capacity of a battery is decisive for the service life of mobile electronic devices. For a practical determination of this parameter, the user only expensive semi-professional chargers with a measuring function.
For our test, we use the easy to use Dell XPS M1530 battery charger ALC 2000 Expert of ELV (price around 120 €) and the professional device ALC 8500 Expert Voltcraft (price about 350 €). Both devices are processor-controlled and, as already mentioned, comprehensive care programs for “stressed” batteries. In addition, the professional battery station, individual settings of various parameters on the PC. In addition, the device is nearly all commercially available rechargeable batteries – charge – even Li-ion cells.

For control and analysis purposes logs Voltcraft charging station, all measured values and prepares them for a graphical evaluation. The low-cost fully automatic Dell Inspiron 6400 battery charger ALC 2000 Expert has no such comfort features. With this device, only a small display information about the current parameters and measured values. Both battery stations can identify important for us battery capacity by a controlled discharge of the Dell xps m1730 battery.

The first capacitance measurements we carry out after formation of the new batteries. Since new batteries does not immediately reach to the first charge cycle its full capacity, this approach to almost all types of batteries necessary. It passed the Dell Studio 1537 battery in the ALC-8500-charger five charge / discharge with a reduced rate of C/10. The ALC 2000 is not possible. Here we have chosen five automatic cycles. The second measurement of Dell XPS M1330 battery capacity after 15 full charge and Entladedurchl?ufen at the loading station.
As the charging and discharging current, we choose the value recommended by the manufacturer or, if no data are available, C/10. This setting is only possible ALC 8500, the ALC 2000, we rely on the automatic function. We also use in the measurement with the ALC-2000 charging station to a second set of identical battery cells from the same package.