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7.2V 1800mAh NI-MH Rechargeable Battery Pack

Digg(124) ( 9 Reviews)
US $6.99
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Don't hesitate to get these superb NiMH rechargeable batteries! These NiMH rechargeable batteries are eco-friendly, safe and reliable. They are ideal for high-drain items such as digital cameras, gaming devices and portable audio products. NiMH rechargeable batteries can be recharged and reused hundreds of times. NiMH battery is high powered, long-lasting and designed for frequent and excellent in many different high power usage devices that are powered by Rechargeable Battery, such as digital cameras, torches, tools and many more. Best for high tech gadgets like digital cameras, camcorders, MP3, and photo equipments requiring stable constant current.
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   The Battery is not for Individual Sale
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 present.For security reasons,please select other non-battery products together.
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Oppon 7.2V 1800mAh NI-MH Rechargeable Battery Pack
USD$ 13.99
USD$ 5.39
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Product Description

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  • Specifications:

    • Highest quality digital battery cells
    • Can recharge over 1000 times
    • These NiMH Rechargeable Batteries have no memory effect so they can be charged or discharged as needed without loss of capacity
    • Stable output, provide continuous power supplier
    • Powerful output, maximize your electronic appliances performance
    • With strict quality control by our company, qualities of our product are ensured
    • NiMH Rechargeable Batteries can be rapidly charged with any quick charger, smart chargers, plug in charger or universal chargers
    • NiMH rechargeable batteries are a good economic and environmental choice
    • Voltage: 7.2V
    • Capacity: 1800mAh
    • Battery Type: NI-MH Battery


    Oppon 7.2V 1800mAh NI-MH Rechargeable Battery Pack

    NiMH Rechargeable Batteries

    • These NiMH Rechargeable Batteries have no memory effect so they can be charged or discharged as needed without loss of capacity

    Rechargeable Battery

    • NiMH Rechargeable Batteries can be rapidly charged with any quick charger, smart chargers, plug in charger or universal chargers

    NiMH Batter

    Oppon 7.2V 1800mAh NI-MH Rechargeable Battery Pack

    How to Use NiMH Batteries:

    • Use NiMH cells to power any high drain device, such as digital cameras, radios and telephones. Frequency of recharging will not affect the battery's output.
    • Avoid using NiMH batteries in low demand or infrequently used devices that have no built-in charger, such as flashlights, remote controls or smoke detectors. NiMH cells have a self-discharge rate of as much as 1 percent per day, so using a conventional or alkaline battery, or a NiCad rechargeable is a better choice in seldom-used electronics.
    •  Energizer PP3 Battery With Nominal Voltage Of 7.2
    • Check the power requirements of devices using 9 Volt (PP3) batteries before choosing a NiMH to power it. NiMH PP3 batteries may have six, seven or eight cells and vary in voltage from 7.2 to 9.6.
    • Recharge NiMH cells as soon at the first sign they need charging. If the cells are arranged in series and one cell fully discharges before the rest, the other cells can drive the dead one's chemical reaction in reverse and cause irreversible damage.
    •  Energizer NiMH Charger
    • Use a charger designed for NiMH cells or batteries for recharging. These chargers monitor the batteries' voltage and prevent over- and under-charging.
    •  NiMH Cells Can Be Recycled--Think Green!
    • Dispose of NiMH batteries in your household trash, and take them to a recycling center. They're considered environmentally friendly, but some components can be reused. 


    Usage and applications:
    NiMH Rechargeable Batteries

    • Rechargeable batteries are used for automobile starters, portable consumer devices, light vehicles (such as motorized wheelchairs, golf carts, electric bicycles, and electric forklifts), tools, and uninterruptible power supplies. Emerging applications in hybrid electric vehicles and electric vehicles are driving the technology to reduce cost and weight and increase lifetime.[1]
    • Normally, new rechargeable batteries have to be charged before use; newer low self-discharge batteries hold their charge for many months, and are supplied charged to about 70% of their rated capacity.
    • Grid energy storage applications use rechargeable batteries for load leveling, where they store electric energy for use during peak load periods, and for renewable energy uses, such as storing power generated from photovoltaic arrays during the day to be used at night. By charging batteries during periods of low demand and returning energy to the grid during periods of high electrical demand, load-leveling helps eliminate the need for expensive peaking power plants and helps amortize the cost of generators over more hours of operation.
    • The US National Electrical Manufacturers Association has estimated that U.S. demand for rechargeable batteries is growing twice as fast as demand for nonrechargeables

    Charging and discharging:

    Rechargeable Battery

    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.

    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

    Common rechargeable battery types:

    NiMH Batter

    • Graph of mass and volume energy densities of several secondary cells

    Nickel-cadmium battery (NiCd):

    • Created by Waldemar Jungner of Sweden in 1899, based on Thomas Edison's first alkaline battery[citation needed]. Using nickel oxide hydroxide and metallic cadmium as electrodes. Cadmium is a toxic element, and was banned for most uses by the European Union in 2004. Nickel-cadmium batteries have been almost completely superseded by nickel-metal hydride (NiMH) batteries.

    Nickel-metal hydride battery (NiMH):

    • First commercial types were available in 1989.[20] These are now a common consumer and industrial type. The battery has a hydrogen-absorbing alloy for the negative electrode instead of cadmium.

    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.

    Package Included:

    • 1 x Rechargeable Battery Pack

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from (Brazil)

Bought this item on


03:49:36 05-09-2012
battery, good quality, very useful for what I want to run ... I hope you have good durability ... not yet tested the length of time to recharge ... but it is useful ..

no comments ... nothing against ...


40 Dino Point ™ gained for this post
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Vlad G

Bought this item on


After all It is not only about milliampere hours
00:00:00 02-15-2011
I put them into camera and they worked just fine. These holders do not look very sturdy, but they perfectly usable.
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Bette D. Macallister

Bought this item on


00:00:00 02-13-2011
Easy to recharge. I know that I have saved money & I don't have to worry about running out & going to the store. always have a replacement handy.
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Bought this item on


Good batteries, long lasting!
00:00:00 02-07-2011
These work great in my gadgets that go through batteries fast.
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D. Mei

Bought this item on


00:00:00 01-01-2011
Bought them as spares for my entertainment system downstairs. Haven't used them yet, but really quick delivery. Use the same set for my mouse and they work pretty well.
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L. Grindahl "Lukis

Bought this item on


Batteries work great
00:00:00 12-26-2010
I have had the batteries for over a month now, charging is fast.
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Keymon J. Jefferson

Bought this item on


love these thimgs
00:00:00 12-16-2010
this is a really good product they hold charges really really good and with it being the best and i really do love these things.
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Notmy Realname

Bought this item on


Great when newly charged
00:00:00 12-08-2010
I have owned these for about four months. Mostly they are used in a DSLR camera. <br/>They are just plain better than these Sony batteries. Eneloops fire right up and last longer even when they have not been in use for days or weeks. I find this makes a big difference because I don't have to recharge every time I start out a day with my camera.
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Electric Boogaloo

Bought this item on


These batteries are great
00:00:00 12-03-2010
I just bought these Ni-MH rechargeable batteries to change out in older solar lights where the batteries just seemed to die out. I could notice right away how much brighter they were than my old batteries. They light up my whole path outside, very nice. They even worked right away and I put them in at night, they did not need to charge up first. I really love this product, I bought 3 packs of them!
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