HP AJ359AA 8 Cell Notebook Battery
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AJ359AA HP 8 Cell Lithium Ion Li-Ion 3.6Ah 14.4V DC Notebook Refurbished

Availability: In Stock
Part Number#: AJ359AA
List Price was: $47.95
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Short Description:
AJ359AA 8 Cell Lithium-ion Li-Ion 3.6Ah 14.4V DC Notebook Battery | Made by HP | Refurbished

Interface Types of This Product: Notebook 8 Cell

Product Condition:
Warranty provided by ALLHDD.COM:
30 Days
We are giving specifications below, why one should consider procuring HP 8 Cell Notebook Battery features, a general overview, description, performance specification, relevant images, a competitive price infographic, and technical information about the AJ359AA model with compatibility.

Battery Voltage and Current

The AJ359AA HP 8 Cell Lithium Ion Li-Ion 3.6Ah 14.4V DC Notebook Battery has a voltage of 14.4V and a capacity of 3.6Ah (ampere-hours). Voltage is a measure of the electrical potential difference between two points, and is commonly measured in volts (V). The higher the voltage of a battery, the more energy it can store.

The capacity of a battery, measured in ampere-hours (Ah), refers to the amount of energy the battery can store and provide over a certain period of time. A higher capacity battery can provide more power to the device before needing to be recharged.

The current is the flow of electric charge. It is measured in amperes (A) and is the rate at which electric charge flows through a circuit. The current that a battery can provide is determined by the capacity of the battery and the load on the circuit.

It's important to note that, the actual voltage, current, and run-time of a battery will vary depending on the specific device and usage conditions. In general, the more power-hungry applications or features that are being used, the faster the battery will drain.

Battery Compatibility with HP Notebooks

The AJ359AA HP 8 Cell Lithium Ion Li-Ion 3.6Ah 14.4V DC Notebook Battery is designed to be compatible with a range of HP notebooks. However, it is important to check the compatibility of the battery with a specific notebook model before purchasing.

One way to check compatibility is to check the product number on the battery against the list of compatible products provided by HP. The product number for the AJ359AA HP 8 Cell Lithium Ion Li-Ion 3.6Ah 14.4V DC Notebook Battery is AJ359AA.

Another way to check compatibility is to use the HP Battery Check tool, which can be downloaded from the HP website. This tool will check the compatibility of the battery with the notebook and provide information on the battery's status and health.

It's also important to note that, even if the battery is compatible with a notebook, it may not work as well as the original battery provided by the manufacturer. Using a non-original or non-compatible battery may cause the battery not to charge or not last as long as expected and also could void the warranty of the notebook.

It's always recommended to check with HP support or technical support to confirm the compatibility of the battery with the specific notebook model.

Charging and Maintenance

Charging and maintenance are important aspects to consider when using the AJ359AA HP 8 Cell Lithium Ion Li-Ion 3.6Ah 14.4V DC Notebook Battery. Here are some tips for charging and maintaining the battery:

  • Charge the battery before using it for the first time. This will ensure that the battery is fully charged and ready for use.
  • Charge the battery regularly. It's recommended to charge the battery every few weeks, even if the notebook is not in use. This will help to maintain the battery's health and prolong its lifespan.
  • Use the correct charger. It's important to use the correct charger that is designed for the specific notebook model. Using the wrong charger can damage the battery or the notebook.
  • Avoid overcharging the battery. Overcharging the battery can shorten its lifespan. It's best to remove the battery from the notebook when it is fully charged.
  • Avoid exposing the battery to extreme temperatures. High temperatures can damage the battery and shorten its lifespan. It's best to store the battery in a cool, dry place.
  • Keep the battery contacts clean. Clean the battery contacts with a soft cloth or a cotton swab dipped in rubbing alcohol. This will help to ensure a good connection between the battery and the notebook.
  • Try not to let the battery drain completely before recharging it. A Lithium-ion battery should be recharged when the remaining capacity is between 20-30%.

It's always recommended to check the user manual of the notebook or consult with HP support for specific instructions on how to charge and maintain the battery.


  • MPN : AJ359AA
  • Manufacturer : HP
  • Type: Battery
  • Volt: 14.4V

About Refurbished Products

Refurbished products are typically refurbished by an Original Manufacturer or an affiliate of the manufacturer or 3rd party facility. This product may have minor blemishes due to normal product usage and doesn't necessarily come with documentation and software unless indicated, but has been well tested and generally has never had any defects.

Regardless of how you use your notebook laptop, there will be a time to replace its battery. The lifespan of batteries is definite and depends on factors such as the charge and recharge cycles. If you want your Notebook battery to last longer, avoid frequent charge and recharge cycles. But then, that is only possible if you don't have too much workload. One way to reduce these cycles is to have a battery with a higher Ampere-hour rating. That means it will run your system for long without the need for recharging. We will see more about that later.

Does the Number of Cells in a Notebook Battery Matter?

If you hold other factors constant, the more cells a battery has, the longer run time it will have. That also you will have to pay more for it. A 9-cell battery has a more ampere-hour rating and more service life than a 4-cell or 2-cell battery. More cells also mean more weight and large size. Notably, batteries with more cells are bulkier, heavier, and costly but give you more runtime and last longer. Why do they last longer?

When a battery stays for long with electrical power, the charge and discharge cycles are reduced. That means the cells do not suffer from constant wear and tear. If you cannot afford Notebook batteries with more cells, you can go for 6-cell or 8-cell batteries. But remember, the number of cells will only affect the lifespan of the battery and uptime only if all other factors are held constant. Two batteries can have the same number of cells but different Ampere-hour ratings and lifespan if the cells are made from different materials. Your CPU core will also determine how long your laptop stays on with a single charge. Newer generation processors are more energy-efficient.

How Do You Make Your Laptop Battery Last Longer?

There are ways of making your battery last longer. Even if you buy a high-quality Notebook battery today, it might not last more than a few months for bad practices. But what are these recommended routines that can improve your battery's lifespan?

First, do not over-drain the battery. Connect your charger when the battery capacity runs low but do not wait until the laptop displays the battery-low warning or shutdown. Secondly, avoid using your computer when charging is in progress. Start using it when fully charged and plug out the power code. These small things make the difference between a long-lasting battery and that with a short lifespan.

If you want to improve the runtime, then you need to dim your display. Find an optimum light that will not make you strain and shut down all programs that you are not using at that moment. By doing so, you reduce the CPU load and the power consumption by LCD backlight.

Buy Notebook Battery from a Reputable Supplier

Another way of ensuring maximum uptime and long battery life is by sourcing them from a reputable supplier. Shop for the right battery model at ALLHDD for guaranteed quality. Contact us for more information.

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What does ALLHDD.Com warranty cover?

30-days to 3 years warranty:

Replacement or refund. In the case of material defects, we will try to replace the product first. The product will be replaced before the expiration of the original warranty. For any failure of hardware, if we cannot process the replacement of the product(s)/model(s), we will refund the original selling/invoiced price. The shipping costs and sales tax, if any, are non-refundable. ALLHDD retains the right to decide whether the item(s) will process for replacement or refund.

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(b) any misuse outside the instructions in the user manual for any specific product;

(c) damaged caused by other hardware or equipment. The warranty will void if the item is returned with physical damage, damage to the retail box, removed from the box, counterfeit labels/labelled by them, or any modifications of internal and external covers. Data loss or damages to any other equipment we do not cover by our offered warranty.

What is the Manufacturer/Brand Warranty?

In general, a manufacturer's warranty service/support is a written guarantee to the buyer of a product. Its terms assure the replacement or repair of the product, if necessary, within a specified period after the purchase (2-5 years depending on the brand/manufacturer). It is typically included in the price of the product. Products are brand new and sealed and the original manufacturer box is complete with the Manufacturer's genuine warranty. For most of the brand new/retail products that come with the manual and box, exceptions may apply (i.e., Cisco, Juniper Networks).

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