Introduction

Magnetic wireless power banks are now a daily carry essential for iPhone users everywhere. But in a sea of cookie-cutter rectangular bricks, BLACKTIME is shaking things up with the Manta Power 5000mAh Magnetic Wireless Power Bank, bringing a fresh wave of innovation to the market.

Blending multi-functional utility with a bold, mecha-inspired aesthetic, this power bank breaks the mold by housing a single, high-capacity 21700 power cell. Its chassis is carved from aerospace-grade aluminum via an unibody CNC process. Featuring an expansive transparent window and an exposed skeletal frame, it dials the cyberpunk aesthetic up to eleven while actively improving internal heat dissipation.

Design-wise, BLACKTIME masterfully balances ergonomics and practicality. Eschewing the traditional ultra-flat approach, the grip area tapers down to a mere 4.5mm at its thinnest point. Paired with the rounded contour of the battery compartment, it sits incredibly comfortably and securely in the hand.

Snap it onto your iPhone, and it automatically rests at a 15-degree natural ergonomic tilt—perfect for keeping an eye on notifications while sitting at your desk. Need a break? It also doubles as a landscape stand for hands-free video viewing, making it a versatile companion whether you’re working or traveling.

Packing a 21700 cell under the hood, the power bank delivers 20W wired fast charging alongside 15W wireless output. It even supports native iPhone wireless charging percentage display, making it a dream accessory for Apple ecosystems.

Let’s dive into the full teardown courtesy of ChargerLAB to see exactly what kind of engineering and build quality lies inside.

Product Appearance

Teardown of the BLACKTIME Manta Power Magnetic Wireless Power Bank 5000mAh-Chargerlab

The front of the packaging box adopts a large silver hollow window revealing the internal structure, with the BLACKTIME brand logo printed at the base.

Large "Manta Power" text and a manta ray logo printed on the top of the box.

The side of the box is printed with the fast-charging power ratings of 15W and 20W, along with the capacity spec of 5000mAh.

Detailed product parameters printed on the bottom of the box, which will be introduced later during the physical inspection.

The back of the box is printed with a wireframe conceptual diagram of the power bank and several core selling points.

Opening the box, the included accessories consist of the power bank unit, a short black USB-C data cable, and a quick start guide.

Both ends of the bundled USB-C cable feature a 90-degree right-angle design. This configuration allows for a better fit against the device when charging during landscape use, preventing cable interference.

The upper section of the power bank's front adopts a large transparent acrylic panel, making the internal wireless charging coil clearly visible. The lower base and outer frame utilize an aluminum alloy hollowed-out skeleton, full of mechanical aesthetics.

The main chassis is machined from a single piece of aerospace-grade aluminum alloy, housing an internal 21700 power cell. An N54 NdFeB magnetic ring is integrated beneath the transparent panel, supporting versatile modes such as portable handheld use and a desktop stand.

Technical Specs:

Product Name: Manta Power Magnetic Power Bank

Model: BT50

Battery Capacity: 5000mAh

Rated Energy: 18.5Wh / 3.7V

Rated Capacity: 2900mAh (5V 2A)

Type-C Input: 5V 3A, 9V 2A

Rated Conversion Efficiency: ≥58%

Type-C Output: 5V 3A, 9V 2.22A, 12V 1.67A

Wireless Charging Output: 5W, 7.5W, 10W, 15W

Executive Standards: GB31241-2022, GB4943.1-2022

Made in China

Manufacturer: Shenzhen Black Time Technology Co., Ltd.

Certifications: FCC, CE, 3C certified

A black silicone anti-slip pad is installed along the edge of the aluminum alloy frame to prevent sliding or scratching the phone during stand mode use.

The aluminum alloy frame of the power bank features smooth, rounded chamfers, with excellent control over manufacturing details. Viewed from the side, the silhouette resembles a manta ray cruising through the ocean. This unique aesthetic design makes it feel lighter and slimmer in the hand, standing out brilliantly among the sea of otherwise uniform magnetic wireless power banks.

The side of it is equipped with a single USB-C port, accompanied by an LED power/status indicator light located next to it.

The LED indicator lights up with a prominent green light when working.

The top features a cylindrical 21700 lithium battery compartment, accompanied by a circular physical power button located next to it.

The power button, metal material matching the chassis, sandblasted surface, crisp tactile feel.

Back of the power bank, a solid aerospace-grade aluminum alloy precision-machined via CNC. The large hollowed-out section on the right not only reduces the overall weight but also facilitates internal thermal dissipation.

Left side features a cylindrical battery compartment; right side features an ultra-thin magnetic stand base.

The bottom of the cylindrical battery compartment is laser-engraved with the same detailed specs as those found on the front.

The length of the power bank is about 98.64mm (3.883 inches).

The width of the power bank is about 73.75mm (2.904 inches).

The thickness of the power bank is about 28.23mm (1.111 inches).

The length of the integrated cable is approximately 13.3cm.

ChargerLAB POWER-Z KM003C shows that the cable supports that it doesn't contain an E-Marker chip.

This USB-C to USB-C short cable supports up to 20V 3A output. It is also an excellent choice when used alone with high-power chargers to power devices such as smartphones and tablets.

When attached to the back of the phone, it provides a natural 15-degree tilt angle, allowing you to easily read notifications without frequently picking up the device, making your daily routine much smoother.

After attachment, the cylindrical battery compartment naturally forms a support foot.

When held in the hand, your fingers rest perfectly within the curvature between the cylindrical battery compartment and the hollowed-out frame, delivering a remarkably comfortable and secure grip.

Placing it in a horizontal orientation immediately unlocks the movie-watching mode, directly freeing your hands.

Once attached to the iPhone, the screen immediately displays Apple's signature MagSafe magnetic charging animation, showing both the iPhone's battery level and the power bank's remaining power.

The "Today" View interface can display the power status of the product.

ChargerLAB POWER-Z KM003C shows that the USB-C port supports PD3.0 20W, PPS, QC4, DCP, SAMSUNG 5V2A and Apple 2.4A.

And it also supports three fixed PDOs of 5V3A, 9V2.22A and 12V1.67A, and features two PPS subsets: 5-5.9V 3A and 5-11V 2A.

The weight is about 146.4g (5.15 oz).

After a quick look at the exterior design and fast-charging compatibility, ChargerLAB dives right into the complete teardown analysis.

Teardown

Pry open the front transparent acrylic panel revealing the internal PCBA and the densely arranged coils.

The inner side of the removed transparent panel features a full circle of strong NdFeB magnets, with a smaller alignment magnet positioned at the bottom.

The main body of the power bank, the wireless charging coil covers the exact center of the black PCB mainboard.

The wireless charging coil, wound with multi-strand Litz wire, featuring a black magnetic shielding sheet attached to the center.

Unscrew the screws and remove the mainboard from the aluminum alloy chassis. The underside of the mainboard is connected to the battery compartment via red and black wires, and the bottom is insulated and protected by high-temperature adhesive tape.

Dense SMD components, chokes, and multiple control chips can be clearly observed on the front side of the mainboard.

Inside the aluminum alloy chassis, a large of blue thermal pad is applied to conduct heat to the chassis. Meanwhile, an NTC thermistor is attached to the battery surface to monitor the temperature in real-time and prevent overheating.

Prying open the side cover of the cylindrical battery compartment reveals the internal 21700 battery cell, with the ends insulated using green barley paper.

The positive terminal of the battery cell is connected to wires via spot-welded nickel sheets, and covered with high-temperature adhesive tape and fish paper for protection.

Completely extract the battery cell from the aluminum alloy chassis and separate all components.

The battery cell, which is the INR21700-50 high-drain cell from JOINSUN. The single-cell capacity is 5000mAh, with an energy rating of 18.5Wh and a nominal voltage of 3.7V. It is made in China and has obtained CCC certification.

Peeling off all the insulating tape on the front of the PCBA, the PCB as a whole appears black with neatly arranged components. An NTC thermistor is attached underneath.

The wireless charging coil is also equipped with an NTC thermistor to prevent the wireless charging module from overheating.

The master control chip is from iSmartWare, model SW6201S. It is a highly integrated, multi-protocol, two-way fast-charging power bank dedicated all-in-one chip.

It supports fast charging on any port among the USB-A+USB-A+USB-B+USB-C ports. It integrates a 5A high-efficiency switching charger, supports 22.5W high-efficiency synchronous boost output, and is compatible with mainstream fast charging protocols such as PPS, PD, and QC on the market.

The chip features fuel gauging, digital tube/LED light display, and corresponding control and management logic. It requires only a few peripheral components to form a complete, high-performance bi-directional fast-charging power bank solution.

The SW6201S supports switching charging up to 5A with an efficiency of up to 96%, and features a synchronous boost function with an output power of up to 22.5W. It includes automatic load detection, and supports wireless charging as well as a low-current mode, ensuring highly efficient charging. Its multi-protocol support encompasses PPS, PD3.0, and QC3.0, making it suitable for a wide range of devices.

Furthermore, the SW6201S integrates a Type-C interface, BC1.2 module, fuel gauging and display, 188 digital tube driver, button support, and comprehensive protection mechanisms, offering users all-around convenience and safety.

Equipped with an I2C interface and housed in a compact QFN-40 (5x5mm) package, it is easily integrated into various applications, making it an ideal choice for power bank designs that require robust functionality and superior performance.

A step-up choke, reinforced with potting compound applied along the edges.

A solid cap is soldered on the mainboard, spec 16V 100μF, which is utilized for output filtering.

Two MOSFETs, marked 8205A.

A wireless charging master control chip, marked B8Ɔ243704I.

The power bank is equipped with a wireless charging power stage from Southchip, model SC5008.

It is a 15W full-bridge power stage, highly integrated wireless charging transmitter with voltage/current demodulation. It contains all the analog components required to implement a WPC-compliant wireless power transmitter.

The chip integrates a full-bridge power stage equipped with low on-resistance MOSFETs, gate drivers, 5V and 3.3LDOs, communication demodulator, and input current sensing circuitry.

It can work collaboratively with the transmitter controller to build a high-performance and cost-effective wireless power transmission system, while complying with the WPC V1.3.2 Baseline Power Profile and Extended Power Profile.

The SC5008 implements FOD by continuously monitoring the transmitted power and comparing it to the amount of received power reported by the power receiver.

To achieve this, the SC5008 uses a current sense amplifier to precisely measure the input DC current. The built-in 5V and 3.3V LDOs can provide power for both internal and external circuits.

Furthermore, the SC5008 supports UVLO, OCP and SCP, and OTP. These protections significantly enhance the reliability of the entire wireless power transmitter system. It is available in a 3mm x 4mm QFN package.

Four NPO resonant caps are located next to the solder joints of the wireless charging coil.

A chip, marked S35B eL1.

The two lithium battery protection chips are from iCM, model CM1143-BBS, packaged in SSOP-3.

The chip features a built-in high-precision voltage detection circuit and a delay circuit. By monitoring the battery voltage and current, it implements protections against battery over-charge, over-discharge, and over-current. It is suitable for the protection circuitry of single-cell Lithium-ion / Lithium-polymer rechargeable batteries.

A chip on the mainboard, marked F8085080A.

The LED indicator, wrapped in a circle of black foam to prevent light leakage, and equipped with a transparent light guide column to guide the light out to the chassis.

Well, those are all components of the BLACKTIME Manta Power Magnetic Wireless Power Bank 5000mAh.

Summary of ChargerLAB

The BLACKTIME Manta Power 5000mAh Magnetic Power Bank stands out from the crowd, completely shattering the boring, brick-like design of legacy power banks.

Wrapped in an aviation-grade aluminum alloy body, it rocks a cyberpunk aesthetic featuring an expansive transparent window and a hollowed-out skeletal frame. It’s undeniably cool, yet highly functional—doubling as an active desk stand while providing excellent heat dissipation. Pushing up to 20W wired fast charging alongside 15W magnetic wireless charging, it’s the perfect daily companion for iPhone users.

Our teardown analysis uncovers top-tier components inside: iSmartWare's SW6201S fast-charging SoC taking charge of the core, paired with Southchip's SC5008 wireless charging power stage. Safety is locked down by iCM's battery protection chips, while a premium JOINSUN cell keeps the power flowing.

To top it off, the clever split enclosure isolates the battery from the main heat-generating mainboard. Bolstered by strategically placed thermal pads and real-time NTC thermal monitoring, this pint-sized powerhouse delivers maximum performance without breaking a sweat.