Recently, ChargerLAB got a 10000mAh mobile power bank from RAVPOWER, which has Micro USB, USB-A, USB-C interfaces. So, it can be used regardless of new or old devices and support 18W fast charging, which is very fast to charge mobile phones and other devices. Let’s disassemble this product to see how it looks inside.
1. Appearance of RAVPower 10000mAh Power Bank
The packaging box’s design is very simple, with the RAVPower brand printed on the upper left corner of the front, a large R letter in the center, and the product name at the bottom.
Open the package. It is covered with a dust-proof plastic bag.
The package contains a power bank, cable, converter, instruction manual and bag.
The power bank supports USB-C and Micro USB input, so the cable inside the box is USB-A to Micro USB cable, and the converter is Micro USB to USB-C.
The power bank is made of plastic, and the surface is frosted.
The RAVPOWER logo is engraved in the top center of the product.
The power button and an LED power indicator are placed on the side of the product, and the light color is blue.
The specifications are printed on the back of the shell.
Product Model: RP-PB173
Battery Type: lithium battery
Battery Capacity: 10000mAh/37Wh
Rated Capacity: 2400mAh/28.8Wh (12V1.5A)
Input:
USB-C: 5V3A,9V2A
Micro USB: 5V2A,9V2A
Output:
USB-A: 5V3A,9V2A,12V1.5A
USB-C: 5V3A,9V2A,12V1.5A
Total output: 5V3A, 15W Max
The products have CE, RoHS, PES certification.
The output side has a USB-C PD port, a Micro USB input port and a USB-A fast charging output port.
The length of the power bank measured by vernier caliper is 142.91 mm.
The width is 68.91 mm.
The thickness is 15.69 mm.
Compare the thickness between the product and a coin.
The net weight is about 212 g (4.47 oz).
Use ChargerLAB POWER-Z KT002 to detect the output protocol of USB-A port. We can see it supports Apple 2.4A, Samsung 5V2A, DCP protocol, and QC2.0/3.0, AFC, FCP fast charging protocol.
In addition, we found the USB-C port supports Apple 2.4A, Samsung 5V2A, DCP protocol, and QC2.0/3.0, AFC, FCP, PD3.0 fast charge protocol.
In addition, the PDO message shows that the USB-C port also has three fixed voltage gears: 5V3A, 9V2A, and 12V1.5A
2. Teardown of RAVPower 10000mAh Power Bank
Firstly, let’s open the outer shell, the edges are fixed with clips, and the battery is fixed and protected by foam.
The PCB board is fixed with screws.
Remove the screws and take out the PCB board and the battery. The other side of the battery is also covered with protective foam.
The front of battery is protected by insulating tape.
The side is equipped with a thermistor for temperature monitoring.
Tear off the tape, there is insulation paper inside, and the cable is connected to nickel sheet.
Close-up of the front side of the PCB board, the left LED light is covered with a plastic block to isolate, and the center inductance is glued on the board.
This is the other side of the PCB board, which is simpler. We can find multiple MOS tubes.
After observing and analyzing the circuit on the front and back of the PCB board, it is found that this power bank uses a main control chip for boost and buck to achieve input/output of three ports. Let’s take a look at the information for each component.
Close-up of the Micro USB input port.
Close-up of the 8205 protection tube, used for Micro USB overcurrent protection.
Close-up of the USB-C port.
Close-up of the protection switch tube of the USB-C port.
The main control chip of the power bank adopts ismartware SW6106, which use to buck and boost to realize battery charging and discharging. It also controls LED light and temperature control. SW6106 integrates multiple protocols, likePD/QC/FCP/PE/SFCP and other fast charging protocols. It also integrates buck-boost switch tubes and 18W high-efficiency boost output. All of those make it become a highly integrated all-in-one chip.
In addition, SW6106 also supports charging and discharging at the same time. It supports fast charging input and output when single port is working, and 5V input and output when multiple ports are working.
ChargerLAB found that there are some other product use this chip as well, like Nanfu wireless fast charging power bank, Baseus USB PD wireless charging power bank, Lenovo 18W USB PD power bank PB-001-LS, RAVPower 20000mAh USB PD power bank, etc.
Close-up of buck-boost inductor, fixed glue.
XySemi XB8886A lithium battery protection chip, which integrated ultra-low resistance MOS protection tube and over-current protection, and can meet the protection needs of most fast-charging power banks.
Close-up of Thermistor.
Close-up of the battery, its specification is 5000mAh/18.5Wh/3.7V.
Close-up of the power button.
Close-up of the USB-A port.
A 10-pin non-mark chip, used to drive the LED digital tube.
Close-up of the LED indicator.
Let’s take a “family portrait” after the teardown.
Summary of ChargerLAB’s Teardown
RAVPower 10000mAh power bank has a flat body and a matte surface. It has three types of interfaces, comes with a Micro USB cable and a Type-C converter, which is convenient for consumers. The 1A1C ports support QC, AFC, FCP, PD3.0 fast charging protocols, and have three voltage gears of 5V3A, 9V2A, and 12V1.5A. 18W fast charging can satisfythe daily fast charging needs for various mobile phones.
The ChargerLAB found that the internal battery is fixed and insulated very well on board. It is equipped with a thermistor for temperature monitoring. The PCB board is fixed by inductance, and it is equipped with a XySemi XB8886A lithium battery protection chip. In addition, the main control chip adopts the ismartware SW6106, which requires only a small number of components and effectively simplifies the circuit and reduces the cost.
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