G-CGR-D28S 3300mAh 7.2V Digital Video Battery for Panasonic AG-DVC NV-DA NV-DS NV-EX Series

Specifications:

• High quality rechargeable battery
• Never run out of battery power when you're just about to capture the perfect moment
• This Digital Camera Battery is a high capacity and rechargeable li-ion battery with premium cell
• Time to get extra power for your digital video camcorder
• Best Battery is a must for all digital camcorder buyers 
• Replacement CGP-D28S CGP-D28SE/1B CGP-D320T1B CGR-D08 CGR-D08A/1B CGR-D08R CGR-D08S CGR-D08SE/1B CGR-D120 CGR-D120E/1B CGR-D120E1B CGR-D120T CGR-D16A/1B CGR-D16S CGR-D16SE/1B CGR-D210 CGR-D220 CGR-D220A/1B CGR-D220E1B CGR-D28A/1B CGR-D28S CGR-D320 CGR-D320A/1B CGR-D320E/1B VW-VBD21 VW-VBD22 VW-VBD25 VW-VBD33 VW-VBD35 VW-VBD40 battery
• Type: Lithium ion rechargeable battery
• Capacity: 3300mAh
• Output Voltage: 7.2V

Compatible with:

Details:

• Never run out of battery power when you're just about to capture the perfect moment

• This 3300mAh 7.2V Digital Camera Battery is designed for Panasonic AG-DVC AG-DVX NV-DA NV-DS NV-EX NV-GS Series

• This kind of Digital Camera Battery adopts latest Lithium Ion battery technology and gives the best performance possible compared to other battery technologies such as nickel metal hydride (Ni-MH)

• With such Li-ion battery you always have fresh Batteries for your electronics. No memory effect, or fully drain your battery before charging

What are the Symptoms of a Dead DV Camcorder Battery?

• Unless you have access to AC power in any situation, having a charged camcorder battery is critical to the ability to record video in many situations, such as your child's school play or soccer game. Most camcorders come with a rechargeable lithium ion battery that is good for an hour's worth of recording; often, you can also buy an extended life battery good for anywhere from three to seven hours of recording. However, batteries do eventually wear out

Initial Symptoms:

• It is hard to initially tell when a camcorder battery is starting to die, but one of the most common symptoms is decreased recording time. If you think you have a fully charged battery, but can only record for 30 minutes, the battery may be in the process of dying. However, in these situation, it may be possible that you didn't charge the battery enough; you may have also used it under power-draining conditions, such as cold weather. Therefore, it is important to start to track how much recording time you are getting from each charge

Battery Bar:

• Most camcorders have a battery bar in the viewfinder that will tell you how much your battery is charged. If the charger is green and indicates your battery is fully charged, but it doesn't show full strength upon putting it into the camcorder, your battery may be starting to die

False Charging:

• False charging can be another symptom of a dead battery. If you leave the battery on the charger overnight, but don't get a decent amount of time recording once you've re-inserted it into the camcorder, it is time to replace the battery

Don't Overcharge:

• Don't try to overcharge your batteries; remove them from the charger when the charger says they are charged. Leaving them on to try to maintain the charge, or to give what is a dying battery a full charge, can damage both the battery and charger

Checking Death:

• At a certain point, the camcorder battery simply won't charge. When this happens, replace it. If you are unsure of whether or not this is the case for your situation, plug in the camcorder to your AC power. If it still works, but the battery still won't turn it on, then the battery is dead. The one caveat to this is that sometimes, rarely, a charger will go bad, so if you get a new battery, charge it and then it doesn't work, the charger is probably bad

How to Extend Your Lithium Battery Life:

• Battery Memory - When I first got my new cellphone, my friend recommended to fully drain the battery before recharging it. His reasoning was connected to the idea of battery memory. Allowing the battery to fully discharge then recharging to max, supposedly gives you the complete battery capacity. Otherwise, if you simply charged from the half way point to max battery capacity, the battery would treat the half way point as the empty point, thus cutting your battery capacity in half
• Battery Calibration - There are some benefits to fully discharging your lithium battery periodically, for laptops this can be especially important. If you start to notice your battery meter becoming more and more inaccurate, it may be time for some battery calibration. Allow your lithium battery completely drain, then charge until the battery is full again. This will calibrate your battery  giving you more accurate readings
• Consequences of Heat - Another enemy of lithium battery life is heat. If you were to leave your laptop plugged in and running for a year, you should expect the lithium battery capacity to be anywhere between 60% to 80% of it's original max capacity. This is why people that use their laptops as desktop replacements will notice greatly reduced battery life performance after one year of use. This issue can be resolved by removing the battery while using a corded power source
• Battery Storage - If you don't plan on using your lithium battery for prolonged periods of time, then you'll want to reduce the charge level to 40% and place the battery in the fridge (not freezer). Storing the battery at 100% charge level applies unnecessary stress and can cause internal corrosion. On the other hand, if the charge is too low, the battery can become permanently unusable, due to battery self discharge

How to Charge and discharge:

Diagram of the charging of a secondary cell battery

• During charging, the positive active material is oxidized, producing electrons, and the negative material is reduced, consuming electrons. These electrons constitute the current flow in the external circuit. The electrolyte may serve as a simple buffer for ion flow between the electrodes, as in lithium-ion and nickel-cadmium cells, or it may be an active participant in the electrochemical reaction, as in lead-acid cells.
• The energy used to charge rechargeable batteries usually comes from a battery charger using AC mains electricity. Chargers take from a few minutes (rapid chargers) to several hours to charge a battery. Most batteries are capable of being charged far faster than simple battery chargers are capable of; there are chargers that can charge consumer sizes of NiMH batteries in 15 minutes. Fast charges must have multiple ways of detecting full charge (voltage, temperature, etc.) to stop charging before onset of harmful overcharging.
• Rechargeable multi-cell batteries are susceptible to cell damage due to reverse charging if they are fully discharged. Fully integrated battery chargers that optimize the charging current are available.
• Attempting to recharge non-rechargeable batteries with unsuitable equipment may cause battery explosion.
• Flow batteries, used for specialised applications, are recharged by replacing the electrolyte liquid.
• Battery manufacturers' technical notes often refer to VPC; this is volts per cell, and refers to the individual secondary cells that make up the battery. For example, to charge a 12 V battery (containing 6 cells of 2 V each) at 2.3 VPC requires a voltage of 13.8 V across the battery's terminals.
• Non-rechargeable alkaline and zinc-carbon cells output 1.5V when new, but this voltage gradually drops with use. Most NiMH AA and AAA batteries rate their cells at 1.2 V, and can usually be used in equipment designed to use alkaline batteries up to an end-point of 0.9 to 1.2V.

How to Reverse charging:

• Subjecting a discharged cell to a current in the direction which tends to discharge it further, rather than charge it, is called reverse charging; this damages cells. Reverse charging can occur under a number of circumstances, the two most common being:
• When a battery or cell is connected to a charging circuit the wrong way round.
• When a battery made of several cells connected in series is deeply discharged.
• When one cell completely discharges ahead of the rest, the live cells will apply a reverse current to the discharged cell ("cell reversal"). This can happen even to a "weak" cell that is not fully discharged. If the battery drain current is high enough, the weak cell's internal resistance can experience a reverse voltage that is greater than the cell's remaining internal forward voltage. This results in the reversal of the weak cell's polarity while the current is flowing through the cells[3][4]. This can significantly shortens the life of the affected cell and therefore of the battery. The higher the discharge rate of the battery needs to be, the better matched the cells should be, both in kind of cell and state of charge. In some extreme cases, the reversed cell can begin to emit smoke or catch fire.
• In critical applications using Ni-Cad batteries, such as in aircraft, each cell is individually discharged by connecting a load clip across the terminals of each cell, thereby avoiding cell reversal, then charging the cells in series

Lithium-ion battery:

• The technology behind lithium-ion battery has not yet fully reached maturity. However, the batteries are the type of choice in many consumer electronics and have one of the best energy-to-mass ratios and a very slow loss of charge when not in use.

Lithium-ion polymer battery:

• These batteries are light in weight and can be made in any shape desired.

Battery Capacity:

• Look for batteries with a higher milliampere hour (mAh) rating. This refers to the amount of electricity delivered at any given moment. Electronic devices can handle a range of mAh without damaging the device. So as the rechargeable batteries begin to lose power, they do no damage to the device. Batteries with a higher mAh may look exactly like a battery with a lower mAh but typically they cost more.

Battery Chargers:

• Buy the battery charger that suits your needs. In some instances you can purchase the charger and batteries as a package deal, but if you want your battery charger to maintain your rechargeable batteries properly, you may need to pay more for special features.
• Look for a battery charger that recharges a variety of battery sizes. Select a unit that has a reconditioning cycle. This keeps you from overcharging your batteries. Some models do this automatically while others have a switch you must flip to go into reconditioning mode.

Warnings:

• Do use the specialized accesory to recharge
• The input voltage of any appliance must be in the range of the output of the battery, otherwise it can do harm to the applince
• To avoid the decending capacity, the battery must not be put away over 1 year
• Away from high temperature, and kept in cool dry place

If your battery met any of the circumstances above, you should change a new one

Package Included:

• 1 x GJT G-CGR-D28S 3300mAh 7.2V Digital Camcorder Battery for Panasonic AG-DVC AG-DVX NV-DA NV-DS NV-EX NV-GS Series