3.7V To 9V 5V Charger Discharge Power Board Type-C Micro DC-DC Boost Module 18650 Lithium Battery Charging Step Up Boost Module

Black type-C
Product details:
1. Maximum 1A programmable linear charging current
2. Used for a single 3.7V lithium battery, fully charged to 4.2V
3. Constant current/constant voltage charging with over temperature protection
4. Soft start limits surge current with battery reverse protection
5. Low power standby, extending battery life
6. Charging status dual output, no battery and fault status display
7. Can be activated at 0V, with 2.9V trickle charging
8. Working temperature: -40~80 ℃
9. Input voltage range: 4.2V~6.5V
10. Output voltage: 4.2V-28V
11. Adjustable maximum power: 5W

Charging indicator light description:
The module can roughly determine its working status through two LEDs, with CHRG indicating a red light and STDBY indicating a blue light. The red light of the battery charging status is high, the blue light is not on, the blue light is on when fully charged, and the red light is slightly on. If there is a boost output, depending on the output power, the red light may remain high during charging. When not connected or loaded, the blue light will be on and the red light will be slightly on.

instructions:
The module supports either Type-C interface input or solder joint input labeled on the back. It is recommended to use a voltage of around 5V. The module is labeled with two outputs, which are the same and have parallel circuits. You can choose one of them yourself. Next, let's focus on battery connection,
If your battery comes with a protective board, you can choose our package without discharge protection. After connecting the B+and B – of the battery, be sure to short-circuit the T point before charging and discharging.
If your battery does not come with a protective plate, it is important to choose a package with discharge protection, as over discharge of the battery may cause it to be scrapped. Most competing products in the same category do not have discharge protection. After connecting the B+and B – of the battery, the T point cannot be short circuited, otherwise the discharge protection will be ineffective.
After connecting the wires, you can use a screwdriver to adjust the output voltage you want.
The battery selection is 3.7V lithium battery, with a full charge voltage of 4.2V. The battery types can be 18650, polymer, etc

Instructions for use:
1. The product is linearly charged, and heating is normal. Rest assured to use * The battery can only be connected in parallel, not in series.
2. The battery cannot be connected in reverse. If there are obvious burn marks on the chip due to reverse connection or high voltage, there is no quality problem in this situation.
3. The charging connection wire should not be too thin or too long. This way, the connection resistance is high. If it is too thin, there will be more voltage drop after charging the battery. It is best to have good contact with the battery connection. Otherwise, after charging the battery, there will be more voltage drop.
When the current is high during boost operation, it is normal for the chip to generate heat. The higher the current, the hotter it becomes, which is a normal phenomenon. The chip comes with overheat protection, so you can use it with confidence.

Green type-C/ MIRO USB
Product Description:
1. Connect all circuits before connecting the battery
2. Do not operate with electricity on
3. Debug the default output of about 9V before use
4. Input voltage 4.5-8V
5. The output voltage can be continuously adjusted from 4.3-27V
(Any voltage above 4.3V and below 27V can be output with self adjustable and reversible clockwise boost)
5. Charging voltage 4.2V, large charging current 1A
6. If the discharge current is large, 2A, the output current needs to be calculated by oneself
7. Output reference high current 5V 1.4A, 9V 0.8A, 12V 0.6A
8. Static current of about 0.5mA
9. Overcharge protection is available
10. No over discharge protection (it can also be said that there is, 2V cut-off boost but not blocking output output still has 2V)
11. If the cut-off boost voltage is 2V, is an additional protection board required depending on the situation
12. Size: 3.3X2.3X0.9 mm
For example, if VIN+is connected to a 5V solar panel, BAT+can output 4.2V to 3.7V, 18650 battery can be charged, and OUT+can output an adjustable voltage that can be adjusted by oneself.
14. Can be used for modifying multimeters and charging lithium batteries