overview
Item report
3.7V to 9V 5V 2A DC-DC Step Up Boost Module 18650 Lithium Battery Discharging Board Type-C DC Booster Converter Module
Product features.
1. Ultra-thin ultra-mini, half-small screw hole, selective material.
2.Excellent performance small lithium battery charging booster module.
3. Adjust output voltage
4.Constant current, voltage, over temperature protection
5. Charging status, dual output, no battery and fault status display.
Product parameters:
Working temperature -40 ~ 80 ℃
Input voltage 4.2V~6.5V
Output voltage 4.2V-28V
Max 5W
Activation 0V, 2.9V Trickle Charge
Up to 1A programmable linear charging current
For single cell Li-Ion battery 3.7V, 4.2V
constant/constant voltage charging over temperature
Soft start limits the inrush current of the battery reverse connection protection.
Low power standby extends battery life
Dual output charging status, No battery and Fault status display.
Description of the solar lamp.
The module can judge the working status by 2 LEDs and other states, CHRG red light, STDBY blue light.
In the battery charging state, the red light is high, the blue light is bright, the flush full bright light, the red light is slightly bright.
If there is a boost output will vary according to the output power, there may be charging always be red, connected without load, blue light, red light slightly bright.
Instructions for use:
The module supports Type-C interface, and after the label input solder joint input can choose, they can be, the recommended voltage is about 5V. The module marked 2 outputs, these two outputs are the same, the line is connected in parallel, you can choose A-Group can.
How to connect the battery
If your battery comes with a protection board, the product accessories do not have discharge protection, the battery connection B + and B- must be shorted to the T point, in order to charge and discharge.
If the battery is not equipped with a protective plate, choose a discharge protection product, this is very important because the battery is likely to be over-discharged to cause battery waste, most competitive products are not discharge protection type, most of the battery is connected to B + and B. -, You Can Short T Point, Otherwise Discharge Will Fail.
After connecting the wires, you can use a screwdriver to output the voltage you want.
Battery selection 3.7V, voltage 4.2V, battery type can be 18650, polymer and other batteries.
Instructions for use:
* Products are linear charging, normal heating, rest assured that use
* Batteries can be connected in parallel, not in series.
* Charging current preferably 0.37C The battery capacity is 0.37 times the battery charging current 400 ie 1000mAh is enough.
* The charging connection cable cannot be too thin and too long. This connection resistance is large. Some batteries are too low in voltage after charging.
* And the battery connection is best contact is good. Otherwise, the battery voltage will fall off further after charging.
* BOOST working current is normal, if the heat is large, the large part of the heat is a normal phenomenon, the chip is overheating protection, can be used with confidence.
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