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COMPAQ F4809A ,hp Laptop Battery,This products is replacement for COMPAQ F4809A, HP F4809A, COMPAQ 319411-001 etc.All replacement hp Laptop Battery and battery packs are brand new. We guarantee to repair / replace during the first 90 days and full 1 year warranty! |
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We warrant that the products sold in our website, other than explicitly stated, are 100% brand new and free from defects in material and workmanship.
| In England | ||
| Shipping methods | Shipping Costs (handling cost included) | |
| Registered Delivery | £7.0 | |
| Special Delivery | Royal Mail Special Delivery is a must if you want to receive items as fast as possible. The additional charge for this special service is at £3.5 per item. | |
| Delivery time | 2 - 5 days | |
| In Ireland | ||
| Shipping method | Shipping Costs (handling cost included) | |
| Registered Delivery | £12.0 | |
| Delivery time | 5 - 7 days | |
What is a MilliAmp Hour (MAH)?
MilliAmp Hour means how much current a battery will discharge over a period of one hour. Higher numbers here reflect a long battery runtime and or higher storage capacity. Higher MAH ratings do not necessarily reflect on speed but more on runtime. For example a 2000 mAh pack will sustain a 2000 milli amp (2 amp) draw for one hour before dropping to a voltage level that is considered discharged. A 1700 will sustain a 1700 mAh (1.7 amp) draw for one hour. 1000 mAH is equal to a 1 Amp Hour (AH) rating. .What is the "Memory Effect" ?
What this means is that if a battery is repeatedly only partially discharged before recharging, the battery "forgets" that it has the capacity to further discharge all the way down. To illustrate: If you, on a regular basis, fully charge your battery and then use only 50% of
