4400mAh Rechargeable COMPAQ DP399A Laptop Battery

Usually new COMPAQ dp399a battery comes in a discharged condition and it must be charged before use (refer to your computer manual for charging instructions). Upon initial use (or after a prolonged storage period) the COMPAQ dp399a battery may require two to three charge/discharge cycles before achieving maximum capacity.

Use a full charge cycle before recharging. All laptop batteries in our site are Li-Ion batteries, so, they do not have memory which you might find in NiCad batteries. However, each chemistry has a limited number of charge cycles, so use a full charge cycle before re-charging to maximize your battery usage. When charging your COMPAQ dp399a notebook battery for the first time your computer may indicate that charging is complete after just 10 or 15 minutes. Don’t worry, this is normal with rechargeable batteries. Just simply remove the COMPAQ dp399a battery from the laptop and repeat the charging procedure.

Try To avoid over-charging, especially, do not let your laptop battery over discharge. It is normal for COMPAQ dp399a notebook battery to become warm when charge and use you battery. The battery exhaust much faster under the high temperature, you should avoid using your laptop battery in shady, cool place. Hit the battery, and other acts will also accelerate depletion of battery. So, pay attention to your battery as much as possible.

If you don't use your COMPAQ dp399a laptop batteries for 1 month or longer, you should remove the battery from your notebook, make sure leave your battery power about 40%, stored in a shade, cool, dry place away from heat, metal objects and direct sunlight, but not in the refrigerator. It’s objected strongly store your COMPAQ dp399a laptop battery for over three months without any using. A charged COMPAQ laptop battery will eventually loses its charge if unused. It may therefore be necessary to recharge the battery after a storage period.

Purchase the Fresh COMPAQ dp399a battery

Select the COMPAQ dp399a battery that made from the A grade battery cells some of COMPAQ dp399a batteries are made from the recycle battery cells please take note of this.

Some of our items have additional option of higher capacity Choose the higher one if there is because it will make your laptop working much more longer.

Determine it clearly that whether it has pass the CE, UL, Rohs and other approval or not.

30 days money back- this is will be a very important quality guaranty for our clients. That will help you a lot to achieve your right from the sellers. Expericially for the one year warranty.

Shipping fee. Check it whether your shipping addresses is deliverable and acceptable or not. And also consider about the price and service. Generally speaking, the shipping fee would be considered as convenience in shopping cart.