SPECIFICATIONS

3.7V to 9V 5V 2A DC-DC Step Up Boost Module 18650 Lithium Battery Charging Discharging Board Type-C DC Booster Converter Module

Product features.

1. Ultra-thin ultra-mini design, small half-hole screw hole, selected materials

2. Excellent performance ultra-small lithium charging booster module

3. With adjustable voltage boost output

4. Constant current, constant voltage charging, with over-temperature protection

5. Charging status dual output, no battery and fault status display

Product parameters:

Working temperature -40~80 ℃

Input voltage range 4.2V~6.5V

Output voltage 4.2V-28V adjustable

Maximum power 5W

0V activation, 2.9V trickle charge

Up to 1A programmable linear charging current

For single cell 3.7V Li-ion battery, full 4.2V

Constant current/constant voltage charging with over temperature protection

Soft start to limit inrush current with battery reverse connection protection

Low power standby to extend battery life

Charging status dual output, no battery and fault status display

Charging indicator description.

Module can roughly judge the working status by two LEDs and other states, CHRG is red light, STDBY is blue light.

Battery charging state red light is high, blue light is not bright, flush full bright blue light, red light is slightly bright.

If there is a boost output, will be different according to the output power, there may be charging will always be high red light, not connected without a load, blue light on, red light slightly bright.

Instructions for use：

The module supports type-c interface input and behind the labeled input solder joint input, choose one of them can, the recommended voltage of about 5V. Module marked with two outputs these two outputs are the same, the line is connected in parallel, you can choose one of them - group can.

How to connect the battery.

If your battery comes with a protection board, optional products without discharge protection, the battery connected to the B + and B-, must be shorted to the T point, in order to charge and discharge.

If your battery does not come with a protection plate, choose a product with discharge protection, this is very important, because the battery is likely to be over-discharged to cause battery scrap, most competitive products of the same kind are not discharge protection, the battery is connected to B + and B-, you can not short the T point, otherwise the discharge protection will fail.

After connecting the line you can use a screwdriver to adjust the output voltage you want.

Battery selection 3.7V lithium battery, full voltage of 4.2V, battery type can be 18650, polymer and other batteries.

Instructions for use:

*The product is linear charging, heat is normal, rest assured that the use of

*Batteries can only be connected in parallel, not in series.

*Charging current is preferably 0.37C of the battery capacity, that is, 0.37 times the capacity of the battery charging current of 400 such as 1000mAH battery is enough.

* Charging connection wire can not be too thin and too long. This connection resistance is large. Too thin if the battery voltage dropped after charging more.

* and battery connection is best to contact good. Otherwise, the battery voltage will fall off more after charging.

* Boost work current is normal if the heat is large, the larger the hotter, is a normal phenomenon, the chip with overheating protection, can be used with confidence.

Product list：

Boost module X5