Battery Faq's

Each type of rechargeable battery chemistry has its own unique characteristics:

NiCad and NiMH:

The main difference between the two is that NiMH battery (the newer technology of the two) offers higher energy density than NiCads. In other words, the capacity of a NiMH is approximately twice the capacity of its NiCad counterpart. What this means is for you is increased run-time from the battery with no additional bulk or weight. NiMH also offers another major advantage: NiCad batteries tend to suffer from what is called the "memory effect". NiMH batteries are less prone to develop this problem and thus require less maintenance and conditioning. NiMH batteries are also environmentally friendlier than NiCad batteries since they do not contain heavy metals (which present serious landfill problems). Note: Not all devices can accept both NiCad or NiMH batteries.

Lithium Ion:

Lithium-Ion (Li-Ion) has become the new standard for portable power in consumer devices. Li-Ion batterys produce the same energy as NiMH battery but weighs approximately 20%-35% less. This is can make a noticeable difference in devices such as cellular phones, camcorders or notebook computers where the battery makes up a significant portion of the total weight. Another reason Li-Ion batteries have become so popular is that they do not suffer from the "memory effect" at all. They are also environmentally friendly because they don't contain toxic materials such as Cadmium or Mercury.

Is it Possible to Upgrade the Device's Battery to a newer Chemistry?

Maybe. NiCad, NiMH and Li-Ion are all fundamentally different from one another and cannot be substituted unless the device has been pre-configured from the factory to accept more than one type of battery chemistry.

Please refer to your manual to find out which rechargeable battery types the particular device supports or use our Battery Quick Finder Wizard to find all the compatible battery for your device. It will automatically list all of the battery types supported by the your specific device.

My new battery isn't charging. Is it defective?

Usually NO. New batteries come in a discharged condition and must be fully charged before use. It is recommended that you fully charge and discharge the new battery two to four times to allow it to reach its maximum rated capacity.

It is generally recommend an overnight charge (approximately twelve hours). It is normal for a battery to become warm to the touch during charging and discharging.

When charging the battery for the first time, the device may indicate that charging is complete after just 10 or 15 minutes. This is a normal with rechargeable batteries. New batteries are hard for the device to charge; they have never been fully charged and not “broken in.” Sometimes the device's charger will stop charging a new battery before it is fully charged. If this happens, remove the battery from the device and then reinsert it. The charge cycle should begin again. This may happen several times during the first battery charge. Don't worry; it's perfectly normal.

How can I maximize the performance of my battery?

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

Prevent the Memory Effect - Keep the 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 Batteries 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 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 battery for a month or more, store it in a clean, dry, cool place away from heat and metal objects. NiCad, NiMH and Li-Ion batteries will self-discharge during storage; remember to recharge the batteries before use.

Sealed Lead Acid - (SLA) batteries must be kept at full charge during storage. This is usually achieved by using special trickle chargers. If you do not have a trickle charger, do not attempt to store SLA batteries for more than three months.

What is "Memory Effect"?

What are volts and milliamp-hours (e.g. 6.0V - 1800mAH)?

Can I recycle my old battery? How?

Yes, we can assist in battery recycling. Please view the information that is provided under our "Battery Recycling" option.

How long will my new battery run?

What is a "smart" and “dumb” Battery?

Smart batteries have internal circuit boards with smart chips which allow them to communicate with the notebook and monitor battery performance, output voltage and temperature. Smart batteries will generally run 15% longer due to their increased efficiency and also give the computer much more accurate "fuel gauge" capabilities to determine how much battery running time is left before the next recharge is required.

8. How Are Batteries Rated? (What Are Volts and Amps?)

There are two ratings on every battery: volts and amp-hours (Ah). The Ah rating may also be given as milliamp-hours (mAh), which are one-thousandth of an amp-hour (for example, a 1Ah battery is 1000mAh). Amp-hours are a rating of the amount of energy that a battery can store. Another way of looking at it is to say that the higher a battery's amp-hour rating is, the longer the battery's run-time will be. Some of our batteries will have higher amp-hour ratings than the original battery found in your device and will not cause any incompatibilities. On the other hand, while the voltage of the Hi-Capacity battery may not be identical to the original battery, the voltages must be within a reasonable range. In order to rate the voltage of the cell, a voltage value between 3.0 and 4.2 must be picked. The voltage that is picked is called the "nominal" voltage, which means that it is for naming purposes only, whereas the actual voltage of the cell depends on the state of charge. Historically some manufacturers picked 3.6V while others picked 3.7V to name the cell. The functionality and performance of either cell is identical and cannot be differentiated by the device. The explanation above applies to a single Li-Ion cell in series. When a battery has two or more Li-Ion cells in series, the voltage is multiplied by the number of cells in series, as in the table below:

Number of Li-Ion cells in series

Nominal voltage

Type of device

1

3.6V or 3.7V Cell phones and Digital cameras

2

7.2V or 7.4V Digital cameras and camcorders

3

10.8V or 11.1V Laptops

4

14.4V or 14.8V Laptops

Thus,

A Li-Ion battery labeled 3.6V is the same as a Li-Ion battery labeled 3.7V.

A Li-Ion battery labeled 7.2V is the same as a Li-Ion battery labeled 7.4V.

A Li-Ion battery labeled 10.8V is the same as a Li-Ion battery labeled 11.1V.

A Li-Ion battery labeled 14.4V is the same as a Li-Ion battery labeled 14.8V.

9. How Long Do Batteries Last (What is the Life Span of My New Battery)?

The life of a rechargeable battery operating under normal conditions is generally between 500 to 800 charge-discharge cycles. This typically translates into one and a half to three years of battery life for the average user. As your rechargeable battery begins to die, you will notice a decline in the running time of the battery. When your two hour battery is only supplying you with an hour's worth of use, it's time for a new one..

About the Author

Anmol Taneja is a Gadget enthusiast and critique. He has written several articles on various aspects of gadgets and the role they play in our day to day lives. Anmol is involved with several organizations involved in the evaluation and review of gadgets including gadgets.in thegadgetcast.com and gadgetenclave.in

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