Description

100% Brand New and High Quality 1. The booster board can only access 2.75-4.2V lithium batteries. Other AA batteries, AAA batteries, NiMH batteries, NiCad batteries, and LiFePO4 batteries cannot be connected, and the lithium battery voltage is lower than 2.75. V or higher than 4.2V must not be accessed.   2. The red and black wires are soldered on the booster board. The red wire is welded to the B+ of the booster board to represent the positive electrode of the lithium battery to be welded. The black wire is soldered to the B- of the booster board to represent the negative electrode of the lithium battery to be welded. The battery's positive and negative poles can not be reversed, then immediately burn out the booster board, and it is sure to burn out the lithium battery protection chip next to the MOS tube, the specific model is 8205.   3. The positive and negative lead of the lithium battery must be soldered on the main board with electric iron. It is not only possible to screw the thread end together because the working current of the booster board is very large.   4. After the positive and negative electrodes of the lithium battery are soldered on the booster board, use a universal meter to measure the red and black solder joints on the booster board. There should be a voltage of 2.75-4.2V. The USB output port is also Without a 5V voltage output, use the charger and the Android charging cable to charge the Android charging port of the boost board for 2 seconds to activate the motherboard. After that, the blue light on the board will light up slightly, and then the USB output port will have a voltage. If there is no normal voltage between the red and black solder joints of the booster board, it is a battery problem.   5. Charging red light, and always bright, will not change light, will not go out, so full of electricity depends on the time, every 1000mAh capacity of the lithium battery to 3.5 hours before it can be full, if the motherboard is welded 2500mAh lithium battery , it takes 8.75 hours to be full. The design of this booster board is this kind of design.   6. Discharge light blue light. Because there is always a 5V output after the activation of the output, even if the phone is not charging, there is always a blue light flash; when used to charge the phone, the external discharge current becomes larger and the blue light will be brighter than when it is empty. This is also the case The original design of the booster board is not a quality issue and is hereby explained.   7. Because the designed charging current is relatively small, most of this step-up plate bulk-assembled charging treasure is connected to a single 18650 lithium battery (capacity is mostly less than 2600mAh), so it is not suitable for multi-section access, or large Lithium battery capacity.   Package Included:   2 x Charger Module