COMPAQ 234219-B21 battery, 234219-B21 batteries, COMPAQ 234219-B21 Laptop Battery

Any Battery or accessory you purchase from our website is guaranteed:

Li-ion and Ni-MH batteries are not interchangeable
Highest quality cells are used in our Laptop Battery
100% QC of EVERY Laptop Battery
A competitive prices is our principle
Replacement batteries which are as good or often better than the originals

Note: If you need a part for your model that is not listed above, please email us via

info@ibuynow.com.au or order@ibuynow.com.au

Our customer service professional may be able to find the product or information that you are looking for or help you refine your search.

Warranty Policy

Warranty

We warrant that the products sold in our website are 100% brand new and free from defects in material and workmanship - We never sell used or refurbished COMPAQ Laptop Batteries

1 year warranty
30 Days Money Back

Secure Shopping Guarantee

Shopping with us is safe and secure. None of our customers have ever reported fraudulent use of their credit cards as a result of shopping with us. You can be assured that the information you give us is confidential. We do not sell, rent or share information of our customers with other parties.

Some Information For COMPAQ Laptop Battery

COMPAQ Laptop Battery Articles & Tips
Upgrade my COMPAQ Laptop Battery from Ni-MH to Li-ion
How can I maximize the performance of my COMPAQ Laptop Battery?
What is the run time of Ibuynow's Laptop Battery?

COMPAQ Laptop Battery Articles & Tips

Upgrade my COMPAQ Laptop Battery from Ni-MH to Li-ion

Ni-Cd, Ni-MH and Li-ion COMPAQ Laptop Battery are all fundamentally different from one another and cannot be substituted unless the laptop has been pre-configured from the manufacturer to accept more than one type of battery chemistry. Please refer to your manual to find out which rechargeable battery types the laptop device supports or use our COMPAQ Battery Finder above to find all the compatible Laptop Battery for your device. It will automatically list all of the battery chemistries supported by your specific device. If your device does allow you to upgrade the battery from Ni-MH to Li-ion, you will typically get longer run times.

For example, if your laptop uses a NI-MH battery that is 9.6 Volts, 4000mAh and the new Li-ion laptop battery is 14.4 Volt, 3600mAh, then you will obtain longer run time with the Li-ion battery.

Example.

Li-ion: 14.4 Volts x 3.6 Amperes = 51.84 Watt Hours
Ni-MH: 9.6 Volts x 4 Amperes = 38.4 Watt Hours
The Li-ion is stronger and has longer run time.

Click here for information on calculating COMPAQ Laptop Battery run time.

How can I maximize the performance of my COMPAQ Laptop Battery?

There are several steps you can take to help you get maximum performance from your Laptop Battery:

Prevent the Memory Effect - Keep the Laptop Battery healthy by fully charging and then fully discharging it at least once every two to three weeks. Exceptions to the rule are Li-ion batteries which do not suffer from the memory effect.

Keep the COMPAQ Laptop Battery Clean - It's a good idea to clean dirty battery contacts with a cotton swab and alcohol. This helps maintain a good connection between the battery and the portable device.

Exercise the Battery - Do not leave the battery dormant for long periods of time. We recommend using the battery at least once every two to three weeks. If a Laptop Battery has not been used for a long period of time, perform the new battery break in procedure described above.

Battery Storage - If you don't plan on using the Laptop Battery for a month or more, store it in a clean, dry, cool place away from heat and metal objects. Ni-Cd, Ni-MH and Li-ion batteries will self-discharge during storage; remember to recharge the batteries before use.

What is the run time of ibuynow's Laptop Battery?

COMPAQ Laptop Battery have two main ratings on them: Volts and Amperes. Because size and weight of Laptop Battery is limited when compared to larger batteries such as car batteries, most companies show their ratings with Volts and Mill amperes. One thousand Mill amperes equals 1 Ampere. When buying a battery, select batteries with the most Mill amperes (or Ah). Batteries are also rated by Watt-Hours, perhaps the simplest rating of all. This is found by multiplying the Volts and the Amperes together. For example:

14.4 Volts, 4000mAh (Note: 4000mAh is equal to 4.0 Amperes).

14.4 x 4.0 = 57.60 Watt-Hours

Watt-Hours signifies the energy needed to power one watt for one hour. This COMPAQ Laptop Battery can power 57.60 watts for one hour. If your laptop runs at 20.50 watts, as an example, this Laptop Battery could power your laptop for 2.8 hours.

Understanding your COMPAQ Battery Needs

We strive to make you Laptop Battery purchases easy. Since we understand that finding the right batteries for your needs can be overwhelming and confusing at times we developed a Laptop Battery finder tool to help find the right size for the make and model of your equipment. We also offer educational articles and tips to help you conserve your batteries and understand common problems. By us providing education you are able to make the right purchasing decisions as well as provide proper care for all of your electronics.

Want to see some battery FAQ?

Replacement Laptop Battery for COMPAQ 234219-B21

Replacement Laptop Battery For COMPAQ 234219-B21 (14.4V, 4400mAh)

Replacement Laptop Battery For COMPAQ 234219-B21 (14.4V, 4000mAh)