UltraFire 450mA Rechargeable Lithium Battery Charger

Specifications:

• Cost effective, high efficiency and reliability
• Constant current and voltage
• Auto-off when batteries are fully charged
• Built in over voltage, over current and short circuit protection
• Charge single or two batteries at a time
• Two separate charging channels - batteries can be mix-charged
• Input 1: 100-240V 50/60Hz
• Input 2: 12V 400mA
• Output: 4.2V-450mA

Details:

• This standard charger is characterized by the constant current and voltage which is popular in its line
• Cost effective, high efficiency and reliability features add more charm to this standard charger

• This standard charger is characterized by the high quality material which ensures its durability

• At the same time, this best battery charger is designed for the auto-off advantages when batteries are fully charged

• And two separate charging channels of this standard charger can make batteries not be mix-charged

• With the simple and practical design and the high quality material, this battery quick charger is your best choice

How Does a Battery Charger Work?

• How does a battery charger work

Recharging 101

• Batteries work because of the electrochemistry between an anode/negative terminal and a cathode/positive terminal. Some battery chemistries have the property of being chargeable, so that when electrical current is fed into them, the electrochemical discharge reaction reverses itself and the battery "recharges."
• Only some batteries have the chemistry and construction features that all them to be charged. Also, due to varying battery designs and chemistry, a given battery can only handle a certain voltage or amount of current. For example, the current fed into a lead-acid car battery would be very different from that of a lithium ion mobile phone battery.

Simple Chargers

• The most common type of charging device is the simple charger. Drawing electric current from a wall outlet, this provides either a constant voltage or constant current and will continue to feed it into the battery until unplugged. Usually a transformer of some kind is involved to convert the voltage. For example, North American wall outlets work on the 110-volt standard, which is inappropriate if directly applied to a 12-volt battery.
• Most charging devices work on this model. They are cheap, but because they never stop feeding in electricity at a set rate and do not stop until unplugged from their power source, they can damage batteries with overcharging if left unattended.

Trickle Charging

• Trickle charging is a variant of the simple charger in that it puts out a constant flow of electricity but at a very low rate. That rate is set to match the particular battery's decay or self-discharge rate. When the battery is completely recharged, the charging therefore continues only at the rate necessary to keep the battery charged and no more. This prevents overcharging and, therefore, degradation or damage to the battery, but makes the charging process very slow.

USB Charging

• The USB bus on a computer is standardized with a 5-volt power output. Therefore, many computer accessories are designed to use USB outlets for battery charging. Excepting that it uses electricity drawn from a computer instead of directly from a wall outlet, it is similar to other charging methods.
• Intelligent Charging
• These chargers monitor either the time spent recharging, the temperature of the battery or the battery's voltage to determine when to autonomously terminate charging. This protects batteries from damage or degradation due to overcharging. Intelligent charging is becoming a popular charging feature for devices that use lithium ion batteries, as these are relatively expensive and suffer more degradation from overcharging than some other battery types.

What Should I Consider When Buying a Battery Charger?

• When it comes to choosing a battery charger, there are so many options that it can be intimidating to choose among them. Following a few rules will guarantee that you choose a battery charger that will meet your needs and provide top quality service for years to come. A classic battery charger can handle either NiMH or NiCad batteries. A NiMH charger usually works with NiCad cells, but not vice versa. Most battery chargers are designed to work with AA or AAA batteries
• Certain electronic products require a special format battery charger, which is usually provided by the manufacturer. The average battery charger has a capacity of either four or six batteries. Ideally, you should have at least an extra pair of charged batteries on hand at all times, so make sure your charger can handle the load
• The typical battery charger is powered via an AC outlet. Smaller units plug directly into the outlet, making them extremely convenient for people on the go. Because they are designed with travelers in mind, these chargers usually work with both 100 and 220 volt outlets without the need for an adapter. Cheaper chargers require an external converter in the form of a power brick, which sends electricity to the charger via a power cord. This type of charger is much cheaper but also inconvenient, and it usually cannot handle 220 volts unless an expensive adapter is added
• One feature worth spending extra money on is a charger control. An expensive battery charger has an intelligent microprocessor that switches the charger off when the batteries are fully charged. It can also recognize how much charge is originally in the batteries and only add whatever's needed. Cheaper chargers, on the other hand, charge batteries for a fixed length of time, which can overcharge the battery and shorten its life. A simple LED is typically used to indicate when the charge cycle is complete
• The cheapest battery charger available will run just under 10 US dollars (USD), while top-quality models can cost up to 50 USD. Generally, the faster and more flexible a charger is, the more expensive it will be. The main factor that affects price is charge time - the faster a battery charger works, the more expensive it is. The fastest time available is just under sixty minutes, while the average charger takes seven to ten hours to fully charge a NiMH battery. If time is not important, choose the battery charger that offers the most features rather than the most expensive one

Package Included:

• 1 x UltraFire 450mA Battery Charger
• 1 x Charging Cable