LATITUDE D620, LATITUDE E5430, LATITUDE E5500, LATITUDE E5510, LATITUDE E5520, LATITUDE E5530, LATITUDE E6220, LATITUDE E6230, LATITUDE E6250, LATITUDE E6320, LATITUDE E6330
Follow the notice below, Better using your Dell LATITUDE D620 Ac Adapter Charger
Storage - Store your LATITUDE D620 Ac Adapter Charger in a clean, dry,
cool place away from heat and metal objects. The Dell LATITUDE D620 batteries will self-discharge during storage; remember stored at about 40% state-of-charge.
Charge and discharge - For lithium ion batteries, you do not need to discharge them fully and recharge constantly. You need to do a full discharge only about every 30 charges. Do not charged to higher voltages than its threshold voltage
Exercise Your LATITUDE D620 Battery - Do not leave your batteries dormant for long periods of time. We recommend using the battery at least once every two to three weeks. If a battery has not been used for a long period of time, perform the new battery break in procedure described above.
Calibrate Your batteries - If your Battery's 76% even less in work , you must fully charge, fully discharge, and then fully recharge the Ac Adapter Charger pack. Consider removing the LATITUDE D620 battery from a laptop when running on fixed power
Do not short-circuit. A short-circuit may cause severe damage to the battery.
Avoid propping your laptop on a pillow, blanket, or other soft surface that can heat up. Your LATITUDE D620 battery is a lot less efficient when not within its standard operating temperature range.
Attention:
If the capacity is low in current,CPU will be in electricity-saving model and battery can not be charged.In this case,take off the battery and fit on to rouse the CPU. The LATITUDE D620 battery can be charged then.
Remove the battery when don't use if for long time,or the currency will be lost and the cell will be damaged.
Recharge the battery as the circle more than once per month to make the management of capacity reach its best status, and prolong Dell LATITUDE D620 Ac Adapter Charger useful life.