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Replacement Compaq Presario b2800 Series Battery
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| Images | Type | Volt | Capacity | Color | Add to Cart |
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Li-ion | 4400mah (6-Cell) |
11.1v | Silver |
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Li-ion | 6600mah (9-Cell) |
11.1v | Silver |
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| Images | Input Volts | Output Volts | Power | Color | Buy Now |
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AC 100V-240V | DC 15-21V | 90W Max | Black | CAD:42.23 |
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DC 12V | DC 15V / 16V / 19V / 21V | 80W Max | Black | CAD:45.23 |
compaq presario b2800 series laptop battery have two main ratings on them: Volt and Capacity. Please compare with your compaq presario b2800 series computer battery's capacity, for example, 8800mAh laptop battery may have double running time than 4400mAh battery(actual running time may different depending on the program running on your laptop).
compaq presario b2800 series Batteries are also rated by Watt-Hours, perhaps the simplest rating of all. This is found by multiplying the Volt and the Capacity together.
For example: this compaq presario b2800 series laptop battery 11.1 Volts, 4400mah (Note: 4400mAh is equal to 4.4 Amperes, 6600mAh is equal to 6.6 Amperes, 7200mAh is equal to 7.2 Amperes, 8800mAh is equal to 8.8 Amperes Etc.)
11.1 x 4.4 = 48.84 Watt-Hours(Watt-Hours)
Watt-Hours signifies the energy needed to power one watt for one hour. This compaq presario b2800 series battery can power 48.84 watts for one hour.
The higher the mAh rating, the longer the battery will hold its charge between charging cycles. An mAh rating larger or smaller than your original battery's will have no impact on the performance of your computer.
Brand-new 
