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Our Newsletter

Battery Tips

The batteries we sell are made using the high-quality cells and utilize all of the proper logic boards, thermal protectors, thermistors and circuit breakers to ensure safety, reliability and efficiency.

To ensure maximum performance of your DSMiller.com batteries we highly recommend reading the following instructions.
Care for Your New Battery

Batteries are sold and shipped in discharged condition and must be fully charged prior to use. You will want to refer to your electronic device’s owner’s manual for proper charging instructions, but we recommend an overnight charge of approximately 12 hours. Upon initial use, or after a prolonged storage period, the battery may require three to four charge/discharge cycles before it achieves full capacity.

Do not be concerned if your battery becomes warm to the touch while charging or discharging – this is normal.

When initially charging the battery your computer may indicate that the battery is completely charged after just 10 or 15 minutes. This is a normal peculiarity with rechargeable batteries. New batteries are hard for the device to charge; they have never been fully charged and therefore the battery cells are "unformed". Sometimes the device's charger will stop charging a new battery before it is fully charged. You will need to remove the battery from the computer and repeat the charging procedure. This may happen several times during the first battery charge. Don't worry - it's normal.
How are Batteries Rated?

Batteries are rated in two ways: volts and amp hours (AH). The AH rating may also be given as milliamp hours (mAH), which are one-thousandth of an amp hour (a 1AH battery is 1000mAH). Amp-hours are a rating of the amount of energy that a battery can store, meaning its capacity. The higher a battery's amp hour rating is, the longer the battery's run-time will be. The amp-hour rating of a DSMiller.com battery will often be higher than that of your original battery, and therefore will last longer between charges. A difference in amp hour ratings will not cause any incompatibilities. On the other hand, while the voltage of the DSMiller.com 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 number of cells in the series multiples the voltage. Therefore, a four-cell battery will generally reflect a voltage of 14.4 to 14.8 volts.
What are the Different Battery Chemistries?

Batteries in portable consumer devices are principally made using Nickel Cadmium (NiCad), Nickel Metal Hydride (NiMH) or Lithium Ion (Li-Ion) technologies. Each type of rechargeable battery technology has its own unique characteristics:

The main difference between the NiMH and NiCad batteries is the fact that NiMH batteries (the newer of the two technologies) offer higher energy densities than NiCads. NiMH delivers approximately 100% more capacity than its NiCad counterpart. What this translates into is increased run-time from the battery with no additional bulk to weigh down your portable device. NiMH are also less prone to develop the “memory effect” and thus require less maintenance and care. NiMH batteries are also more environmentally friendly than their NiCad counterparts, since they do not contain heavy metals (which present serious landfill problems).

Li-Ion has quickly become the emerging standard for portable power in consumer devices. Li-Ion batteries produce the same energy as NiMH batteries but weigh approximately 35% less. This is crucial in applications such as camcorders or notebook computers, where the battery makes up a significant portion of the device's 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 better for the environment because they don't contain toxic materials such as Cadmium or Mercury.
Memory Effect?

What this means is that if a battery is continually only partially discharged before re-charging, the battery "forgets" that it has the capacity to further discharge all the way down. To illustrate: If you, on a regular basis, fully charge your battery and then use only 50% of its capacity before the next recharge, eventually the battery will become unaware of its extra 50% capacity which has remained unused. Your battery will remain functional, but only at 50% of its original capacity. The way to avoid the dreaded "memory effect" is to fully cycle (fully charge and then fully discharge) your battery at least once every two to three weeks. Batteries can be discharged by unplugging the device's AC adaptor and letting the device run on battery-power alone until it ceases to function. Cycling the battery will insure your battery remains healthy.
Keep Your Battery Fit

Do not leave the battery dormant for long periods of time. We recommend using the battery at least once every two to three weeks in order to cycle (fully discharge and then fully charge) the battery cells. Failure to do so may significantly shorten the battery's life (this does not apply to Li-Ion batteries, which do not require cycling). To discharge, simply run your device under the battery's power until it shuts down or until you get a low battery warning. Then recharge the battery as instructed in your device’s owner's manual. If the battery will not be in use for a month or longer, it is recommended that it be removed from the device and stored in a cool, dry, clean place. A charged battery will eventually lose its charge if unused. It may therefore be necessary to recharge the battery for a full 12-hour charge after a dormant period.
Be Kind to Your Battery

It is a good idea to occasionally clean the battery contacts using a cotton swab and a small amount of alcohol to help maintain a good connection between the battery and your electronic device.
Do not short-circuit as it can cause severe damage to your battery. Do not drop, hit, or otherwise abuse your battery as this can expose the contents of the battery cells, which are highly corrosive. Do not expose your battery to moisture or rain. Do not expose your battery to fire or other sources of extreme heat as this can result in an explosion.
How Long Will My Battery Last Between Charges?

Actual battery run-time depends upon the power demands made by the equipment. In the case of notebook computers, the use of the monitor, the hard drive, and other peripherals puts additional strain on the battery power and reduces the battery's run-time between charges. The total run-time of the battery is also heavily dependent upon the design of the equipment. To ensure maximum performance of the battery, optimize your computer's power management features. Power management is a trade off: better power conservation in exchange for lesser computer performance. The power management system conserves battery power by setting the processor to run at a slower speed, dimming the screen, spinning down the hard drive when it's not in use and causing the machine to go into sleep mode when inactive. Refer to your computer owner’s manual for more information on power management.
What is the Overall Lifespan of My Battery?

Generally, the lifespan of any rechargeable battery is between 500 to 800 charges, operating under normal conditions. This will typically translate into one and a half to three years of total 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.
What Should I Do with My Dead Battery?

NiCad, NiMH, and Li-Ion batteries should always be recycled. Be environmentally conscious – don’t throw these batteries in the trash. If you don't know where your local recycling facility is, call the Portable Rechargeable Battery Association at 1-800-822-8837. They will provide you with the address of the recycling center nearest to you.