Schematic diagram of lithium battery charger

Lithium battery charger is specially used to lithium ion battery charging the charger. Lithium ion battery has severe requirement on charger, and needs protection circuit, so the lithium battery charger usually has higher precision of control, which can carry on the constant current and constant voltage to the lithium ion battery charging.

Lithium battery charger is specially used for lithium ion battery charger. Lithium ion battery of charger demand is higher, need protection circuit, so the lithium battery charger usually have higher precision of control, can carry on the constant current constant voltage to the lithium ion battery charging.

Single or double section 8.4 V lithium ion or lithium polymer battery ideal charger control circuit;

Above 1 [%] voltage accuracy;

The charging process, the user can change the charging current in advance;

Constant current charging, the charging current is adjustable;

Constant voltage charging process;

Automatic recharging process;

The temperature controls in the process of charging.

LED charging status indication;

Battery is not normal detection;

Low power supply voltage, low power consumption of the sleep mode, the battery leakage current minimum;

Few peripheral components;

The input voltage: 100-240 - v

Input frequency: 50 to 60 hz

Single battery charging voltage: 4.2 V

Power switch is not connected to circuit boards of the LED lamp is not bright

Power supply circuit board is connected the green LED lit continuously, circuit board waiting for lithium battery placement at this time

Lithium-ion batteries in the after, began to charge, LED into orange

When the conditions of the lithium battery to charge, then stop charging, the LED into orange

Removed after lithium battery charge, battery, LED turn green, such as back in lithium batteries

In the process of charging, charging percentage will be shown

LED lights:

Green: wait for the battery placement

For yellow: charging

Continuous orange: the battery has been fully charge or have 6 hours

Flashing orange: warning messages across the electrodes (output short circuit, reverse, temperature anomaly)

1. Should make the charger work choices in line with by the rechargeable battery. If the charger work in lithium battery status to Ni-Mh or nickel cadmium battery, the battery charger, will greatly reduce the work time. If the charger work in nickel battery status to lithium ion batteries, lithium batteries be overcharge, will seriously affect the service life of batteries.

2. To understand the charger is full of light when the battery is really are full. See full of some charger indicator the lithium battery can be removed, some of the charger to see light on then we'll take out the battery.

18650 is the ancestor of lithium ion battery - Japan's SONY company in order to save costs and set a standard of lithium ion battery model, including 18 said to 18 mm in diameter, 65 said length is 65 mm, 0 means for cylindrical batteries.

Common batteries are divided into 18650 lithium ion battery, lithium iron phosphate batteries. For the nominal voltage of 3.7 v lithium ion battery voltage, charging by the voltage of 4.2 v, the nominal voltage of 3.2 v lithium iron phosphate battery, charge cut-off voltage of 3.6 v, the capacity is 1200 mAh - 3350 mAh, usually common capacity is 2200 mAh - 2600 mAh.

Lithium battery (Li - ion, Lithium Ion Battery) : lithium ion battery has a light weight, large capacity, no memory effect, etc., thus obtained

18650 lithium batteries

18650 lithium batteries

Widespread application - many digital devices are used the lithium ion battery as a power source, although its price is relatively expensive. High energy density lithium ion battery, its capacity is the same weight of 1.5 to 2 times of Ni-Mh batteries, and have very low self-discharge rate. In addition, the lithium ion battery has almost no "memory effect", and does not contain toxic substances etc. also is the main reason that it is widely used. Also please note that the lithium battery external generally marked with English 4.2 V lithium ion battery V lithium secondary battery (lithium battery) or 4.2 (lithium secondary battery), 4.2 V lithium ion rechargeable battery (rechargeable lithium battery), so the user must see when buying batteries battery block appearance, prevent because they didn't see the battery type and cadmium nickel, nickel-metal hydride batteries will be mistaken for lithium batteries.

Standard 3.7 V or 4.2 V lithium-ion batteries are the same. Manufacturers of different and just yourself.3.7 V means the battery discharge platform in the process of voltage (i.e., a typical voltage), and 4.2 V refers to the charging full of electric voltage. Common 18650 rechargeable lithium battery, the voltage is 3.6 or 3.7 v, the charge is 4.2 v, this has very little to do with power (capacity), 18650 battery capacity of mainstream mAh from 1800 to 2600 mAh, (18650 power battery capacity in 2200 ~ 2600 mAh), the capacity of the mainstream and even more than the 3500 or 4000 mAh has (remind everybody, above the nominal 3350 mAh on the market of domestic batteries are likely to false, the current domestic production of the maximum capacity is 3350 mAh.).

Generally believed to be the no-load voltage of lithium-ion batteries in the 3.0 V is considered under the electricity used up (a specific threshold value needs to see battery protection board, such as low to 2.8 V, there is also a 3.2 V).Most of the lithium battery discharge cannot be under no-load voltage to 3.2 V, or excessive discharge will damage the battery (lithium batteries on the market commonly basic is belt protection board to use, so the excessive discharge can also lead to detect the battery protection board, thus unable to recharge the battery).4.2 V is the highest limit of the battery voltage, it is generally believed to the no-load voltage of lithium-ion batteries charged to 4.2 V is considered the electricity, the battery charging process, the battery voltage rise gradually in 3.7 V to 4.2 V, lithium batteries cannot be no-load voltage to over 4.2 V, otherwise will damage the battery, this is the place where special lithium-ion batteries.

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