Introduction
The DeWalt USB Charging Kit we introduced earlier can charge your power tools in the most universal way - using USB-C. This design not only greatly enhances the compatibility of the power adapter but also completely avoids the possibility of permanent damage caused by the failure of the non-detachable power cord.
Today, let's take apart its included 65W charger to examine its build quality and components, and see if it matches the excellence of similar chargers produced by traditional electronics accessory manufacturers.
Product Appearance
The packaging box continues DeWalt's signature black and yellow style, with simple usage illustrations and warning instructions for the charging kit below.
specs info is printed on the side of the packaging box.
Upon opening the box, you'll find the USB charging kit, charger, cable and instruction manual.
The included charging cable is a black and yellow braided design, offering high-density weaving.
The connectors are imprinted with "DEWALT" and are relatively soft, providing better flexibility.
The USB-C connector utilizes a specially designed pin configuration.
The cable length is approximately 1m (3' 34'').
ChargerLAB POWER-Z KM003C indicates that it supports 20V5A power transmission and USB 2.0.
The DeWalt 65W charger features a black PC casing with bright yellow "DEWALT" and "65W" power markings on the front. It has a matte finish and a square shape.
The specs info of the 65W charger is located underneath the plug.
Model is 2AEK0655. It supports an input of 100-240V~50/60Hz 1.7A and an output of up to 20V3.25A, 65W. And it has passed the UL and FCC certifications.
It only has one USB-C port.
The length of the charger is about 62mm (2.44 inches).
The width is also about 62mm (2.44 inches).
And the thickness is about 28mm (1.10 inches).
It's about the same size as Apple 61W Charger.
And the weight is about 136g (4.80 oz).
KM003C shows that it supports FCP, QC3.0, PD3.0, DCP and SAM 2A protocols.
And it supports five fixed PDOs of 5V3A, 9V3A, 12V3A, 15V/3A, and 20V3.25A.
Teardown
As always, use a spudger to pry along the gap. The PCBA module is covered with aluminum heat sinks.
The PCBA module is fixed with dark cyan tape.
The heat sink is secured with snaps.
The length of the PCBA module is approximately 58mm (2.28 inches).
The width is also about 58mm (2.28 inches).
And the thickness is about 24mm (0.94 inches).
The input wires are insulated with heat-shrinkable tubing.
The heat sink is soldered to the PCBA.
Remove them; you can see that there is a black Mylar sheet inside, which is connected to the PCBA module through a gray thermal pad.
The output USB-C socket is soldered to the vertical small PCB, and the transformer on the side is also insulated with dark cyan tape.
The fuse, common mode choke, safety X2 capacitor, and high-voltage capacitor are on the front of the PCBA module.
And the bridge rectifier, master control chip, synchronous rectifier controller and feedback optocoupler are on the back.
ChargerLAB found it adopts QR flyback topology, which can output a wide range of voltage. Next, let's examine the information of various components, starting from the input end.
The input end contains a fuse, common mode choke, safety X2 capacitor and electrolytic capacitor for input filtering.
The input fuse is from WalterFuse. 3.15A 250V.
The common mode choke is wound with magnet wires and insulated wires.
The safety X2 capacitor is from Yimanfeng. 0.33μF.
The other common mode choke is wound with flat copper wires.
The two bridge rectifiers are all from Pingwei, model is TMBF310. 3A 1000V.
The electrolytic capacitor for input filtering is parallel to the PCBA to save space.
It's from Chengx. 120μF400V.
The high-performance master control chip is from On-Bright, supports CCM and QR operating modes, and is optimized for high energy efficiency and low standby power consumption. Model is OB2362.
The MOSFET marked with 1015 is used to power the master control chip.
The primary MOSFET is from Infineon and adopts PG-TO252 package. The model is IPD65R400CE. 700V 400mΩ.
On the other side, there are a smaller electrolytic capacitor, transformer, USB-C socket and solid capacitor.
The smaller electrolytic capacitor is used to power the master control chip. 22μF100V.
And the transformer is marked with ATQ27.
The blue Y capacitor is from STE.
The 1008 optocoupler is used for output voltage feedback.
And the synchronous rectifier controller is marked with UrZ.
The synchronous rectifier is from Silicongear and adopts PDFN5 x 6-8L package. Model is DG100N03Q.
100V 9mΩ
These two solid capacitors for output filtering are from APAQ. 680μF25V.
The protocol chip, VBUS MOSFET and USB-C socket are on the vertical small PCB.
There are multiple TVS diodes and current sensing resistors on the back.
The protocol chip is also from On-Bright, supporting fast charging protocols such as PD3.0, PPS, FCP/SCP, QC4.0+, and equipped with comprehensive protection features.
The output VBUS MOSFET is from Excelliance MOS and adopts EDFN3 x 3 package. Model is EMB07P03.
30V 7.8mΩ.
And the plastic sheet inside the USB-C socket is black.
Well, that would be all the components of this charger.
Summary of ChargerLAB
The DeWalt USB Charging Kit consists of a charger, cable, and charging module. It not only charges battery packs but also allows them to be used as power banks for charging mobile devices. Moreover, the 65W charger is powerful enough to meet the charging needs of most smartphones, tablets, and ultrabooks.
In terms of internal structure, its PCBA module covers a lot of aluminum heat sinks, supplemented by thermal pads to further enhance heat dissipation and reduce temperature rise during prolonged high-power output. This is crucial for devices that are likely to be used in harsh outdoor environments. So, if you already own DeWalt battery packs or power tools, this upgrade will certainly be worthwhile.
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