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HP F4809A Battery Description:

The HP F4809A battery uses the highest quality cell,and ensure 100% to your laptop.
The battery is designed to meets or exceeds the original manufacturer specifications for your HP F4809A laptop.
Be sure to check out our tremendous 1 year warranty, 30 days money back guarantee for this F4809A battery.
We're proud to offer fast and secure shipping.

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HP F4809A Compatible with Battery Code:

HP F4809A Fits Laptop Computer Models:

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What every battery user should know?

1.How should I prepare my new HP F4809Alaptop battery?
Batteries comes partially charged. You can use the Lithium-ion(Li-ion) battery right away and charge it when needed, But prime new Nickel-based battery by putting on a 14-16h charge.
2.Can I damage my F4809A battery if incorrectly prepared?
No; Li-ion is forgiving to partial and full charge. No priming is needed when new.
3.Should I use up all HP F4809A battery energy before charging?
No, it is better to recharge more often; avoid frequent full discharges. To maintain the optimum performance of HP F4809A battery pack, it is highly recommended to circle (fully discharging and recharging) it at least once a month.
4.Should I charge my HP F4809A battery partially or fully?
Full charge termination occurs by reading the voltage level and charge current. Fully charged a Li-ion battery is safe and does not cause harm. However, regarding the Nickel-based batteries, allow full charge without interruptions. Repeated partial charge can cause heat buildup. (Many chargers terminate charge by heat. A fully charged battery will re-heat, causing overcharge.)
5.Should I remove the AC adapter when my laptop is not in use?
It does not matter. The charger automatically cuts the charge current when the battery is full. A laptop may be connected to the AC when not in use.
6.Should I remove the HP F4809A battery from the charger when full?
Yes, it is best to remove the pack from the charger when full. A prolonged trickle charge to a fully charged F4809A battery can be harmful.
7.Should the battery be kept charged when not in use?
Best to store at 40% charge or 3.75-3.80V/cell open terminal. Store in a cool, dry and clean place. Do not fully deplete battery because Li-ion may turn off its protection circuit. However,NiMH battery can be fully depleted and recharged. Priming may be needed.
8.What should I know about chargers?
Charger should apply full charge. Avoid economy chargers that advertise one-hours charge. Fastest full-charge time: 2-3 hours.
9.What are the allowable charging temperatures?
Rechargeable batteries can be used under a wide temperature range. Slow charge: 0°C - 45°C (32°F - 113°F) Fast charge: 5°C - 45°C (41°F - 113° F) Temperature sensor may prevent charge or cut off the charge prematurely. Charging a hot battery decreases the charge time. The battery may not fully charge.