Replacement Sony VGP-BPS21/S 11.1V 4400mAh Battery

Replacement Sony VGP-BPS21/S 11.1V 4400mAh Battery

Colour: Black
Type: Li-ion
Voltage:  11.1V
Capacity: 4400mAh
Warranty: 1 Year

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Compatible Part Numbers:

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Follow the notice below, Better using your Sony VGP-BPS21/S Laptop Battery

1. Storage - Store your VGP-BPS21/S Laptop Battery in a clean, dry, cool place away from heat and metal objects. The Sony VGP-BPS21/S batteries will self-discharge during storage; remember stored at about 40% state-of-charge.
2. 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
3. Exercise Your VGP-BPS21/S 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.
4. Calibrate Your batteries - If your Battery's 76% even less in work , you must fully charge, fully discharge, and then fully recharge the Laptop Battery pack.
   Consider removing the VGP-BPS21/S battery from a laptop when running on fixed power
5. Do not short-circuit. A short-circuit may cause severe damage to the battery.
6. Avoid propping your laptop on a pillow, blanket, or other soft surface that can heat up. Your VGP-BPS21/S 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 VGP-BPS21/S 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 Sony  VGP-BPS21/S Laptop Battery useful life.