Last year, we took apart many high-power laptop power banks from Anker, Baseus, and Aohi.
You can click the corners to take a look.
And today, we got another similar product,
the 145W laptop power bank from UGREEN.
Let’s take it apart to see what it looks like inside.
The 25000mAh is enough to charge your laptop.
And the 145W Superbox power bank is printed at the bottom.
It can charge mainstream electronic products.
And some specs info are printed on the back.
We’ll take about it later.
After opening the box, it contains the power bank itself, a charging cable.
and a dust-proof bag.
The charging cable is shorter than ordinary cable
and is more suitable for power banks.
The length is only about 0.5m (19.68 inches).
Connect it to the ChargerLAB POWER-Z KM002C.
It shows this cable can support up to 100W.
After taking it out, we found it adopts navy blue matte surface with rounded edges.
The UGREEN and 145W are on the front.
There is a power button and digital display on the side.
Press the power button.
Then, the display will show the real-time remaining battery.
Two USB-C and a USB-A ports are on the top of the power bank,
All in purple.
And the USB-C1 can support 100W.
The detailed specs info are on the other side.
Model is PB205.
The total output power can be up to 145W.
The USB-C1 can support 100W output and 65W input,
while the USB-C2 supports 45W input and output.
And the USB-A only supports 18W output.
Rated capacity is 88.2Wh.
The size of this power bank is about 160 x 81 x 27.5mm (6.3 x 3.19 x 1.08 inches).
And the weight is about 516g (18.2 oz).
The ChargerLAB POWER-Z KM002C shows the USB-C1 only supports PD3.0.
And it has five fixed PDOs of 5V3A, 9V3A, 12V3A, 15V3A, 20V5A.
And the USB-C2 can support FCP, AFC, QC3+, PD3.0, and Apple2.4A protocols.
And it also has five fixed PDOs of 5V3A, 9V3A, 12V3A, 15V3A, 20V2.25A.
Finally, the USB-A supports FCP, AFC, QC2.0, and Apple2.4A protocols.
Next, let’s take it apart to see what kind of battery pack and components are inside.
After removing the top case, we found the internal PCB is covered with a thermal pad,
graphite thermal sheet, and heat-resistant tape.
Let’s take a closer look at the PCB.
It integrates a battery protection circuit and a buck-boost conversion circuit.
All wires are connected to the bottom socket and protected by glue.
Remove the screws that fix the upper PCB.
And disconnect those wires.
Now, we can see the lower PCB.
Two thermal pads are placed between two PCBs to dissipate the heat evenly.
And battery positive and negative tabs are soldered to the PCB.
Separate the PCB from the battery.
And flip back the PCBA module.
There’s a heat sink on the back.
A thermal pad is under it to conduct heat.
Move to the battery pack.
It adopts 21700 battery cells from BAK.
5000mAh for each.
And five battery cells are connected in series.
From the side, we can see that the positive is pasted with barley paper for insulation.
And the heat-resistant tape is on the bottom of the PCB area.
First, let’s look at battery protection and buck-boost circuits.
The battery protection chip is from iCM, designed for lithium-ion or lithium-iron-phosphate batteries.
Those four battery protection MOSFETs are from TECHCODE and use for battery protection.
30V, 5mΩ.
Three R010 resistors are connected in parallel and next to the MOSFETs.
They’re used to detect battery current.
Here is the thermistor, used to detect the battery temperature and avoid overheating.
As mentioned, all wires are connected to this socket.
This is the synchronous buck-boost controller, from Powlicon.
It can support charging and discharging management.
And it also has a programmable continuous current mode and light-load high-efficiency mode.
Those four synchronous buck-boost MOSFETs can form the H-bridge.
They’re the same model as the battery protection MOSFET.
Flip to the back.
This is a 10μH alloy inductor, reinforced with glue.
The solid capacitors for input and output filtering are from Yunxing and are fixed with glue.
100μF 25V.
Those two PCBs are connected through those pins.
Next, let’s analyze the second PCB.
The buck-boost inductor, controller, and two protocol chips are on the front.
And some MOSFETs are on the back.
The protocol chip is from Chipsea Technology,
which is a USB-C controller that supports USB-C and PD3.0.
There’s another protocol chip, which is also from Chipsea Technology, with a different model.
The controller of the other buck-boost circuit is also from Powlicon,
same as the one on the first PCB.
Those four MOSFETs are all from TECHCODE and adopt DFN5 x 6 package.
They can also form the H-bridge for voltage conversion.
30V, 2.7mΩ.
Here is the toroidal-core inductor, fixed with glue.
Those three solid capacitors are all from Yunxing,
100μF 25V for each.
This is a 3.3V regulator chip from Microne,
used to power the protocol chip.
Those two output VBUS MOSFETs for USB-C1 are from semi-one and adopt PDFN3.3 x 3.3 package.
They are connected in parallel. 30V, 8mΩ.
A VBUS MOSFET for USB-C2 and two VBUS MOSFETs for USB-A
are the same as the USB-C1.
Here’re the sockets of those pins that connect two PCBs.
Here is the power button.
And a segment display is next to it.
Well, that’s all components of this UGREEN 145W laptop power bank.
It can charge three devices at the same time.
And the high-power output can meet the charging needs of laptops.
After taking it apart, we found that it consists of five battery cells and two PCBs.
Those components have been tightly stacked together.
And the heat dissipation measures can facilitate the high-power output.
OK. That’s all for today’s video.
You can also click the corners to see other laptop power banks.
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See you in the next video. Bye.