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The capacity of a battery is measured in mAh (milliamp/hr) or in Wh (Watts/Hr).
The link is direct between capacity and time of use of the device powered by the battery.
Regarding laptop batteries, manufacturers indicate, for a laptop which would be powered 2 hours with a 4400 mAh battery :
- additional 20 min autonomy with a 4800 mAh battery
- additional 40 min with a 5200 mAh battery
Difference is more important again between two batteries 6600 and 7800 mAh.
These important differences come from internal cells of batteries : a 4400 mAh or 6600 mAh battery is assembled w 2200 mAh cells, while 5200 or 7800 mAh are with 2600 mAh internal cells. The unitarian difference is multiplied by the number of cells.
For these reasons, we offer several capacities :
- standard capacity with low cost for those who do not care so much for time of use
- higher capacity for those who need longer time of use |
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58.00€ (52.23 £ )VAT
 Stock : limited
Features :- Ni-Mh - 3000 mAh *  - Forte puissance, autonomie allongée - 14,4 Volts - 113,80 x 80,80 x 108,20 mm
Battery
compatible DEWALT DE9091, DEWALT DW9091, DEWALT DE9091, DEWALT DE9092
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THIS WEBSITE IS CERTIFIED
BY ENERGY-FRANCE
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Poids : 645 g
Promotion
Compatible Battery assembled with high quality cells, and tested
Internal electronics identical to original
Complies with specifications of original manufacturer. 6 languages blister.