Original replacement touchpad for MacBook Air A2442, available in Silver and Space Gray. Perfect for fixing unresponsive or damaged trackpads and restoring smooth cursor control and gesture functionality. The Original MacBook Air A2442 Touchpad is a genuine replacement part designed to restore full trackpad performance and functionality. If your MacBook Air trackpad is not clicking, not responding, or physically damaged, this original touchpad provides a reliable solution with smooth tracking and accurate gesture support. Available in Silver and Space Gray, it matches the original laptop finish for a clean professional repair. Original / Genuine Touchpad for MacBook Air A2442 Available in Silver and Space Gray Restores smooth cursor control and multi-touch gestures Reliable clicking and accurate tracking performance Perfect for repair and replacement of damaged trackpads High-quality build for long-term use ✔ MacBook Air 13-inch (2021 / 2022) A2442 Compatible with MacBook Air A2442 models only. Please confirm the model number on the bottom cover before purchase to ensure a correct fit.
The ViewSonic VG1655 16″ Portable Monitor is a game-changer for those who need a secondary screen on the go. Whether you’re a digital nomad, a student, or a professional, this portable monitor enhances your productivity and entertainment experience. Firstly this 16″ portable monitor features a Full HD 1080p resolution, delivering sharp and vibrant visuals. From editing documents to watching videos, every detail is clear and crisp on the ViewSonic VG1655. Furthermore designed for portability, the ViewSonic VG1655 is lightweight and slim. It easily fits into your bag, making it an ideal travel companion. Set up is a breeze with the built-in kickstand, allowing you to adjust the screen to your preferred angle. The ViewSonic VG1655 offers versatile connectivity options. With USB-C and Mini HDMI ports, you can connect your laptop, smartphone, or gaming console. This ensures compatibility with a wide range of devices, making it a versatile addition to your tech arsenal. For those who work on the go, the ViewSonic VG1655 features a blue light filter and flicker-free technology. These features help reduce eye strain, allowing you to work comfortably for longer periods. In addition to its impressive display and portability, the ViewSonic VG1655 also boasts robust build quality. The durable design ensures that this portable monitor can withstand the rigors of travel and daily use. In conclusion, the ViewSonic VG1655 16″ Portable Monitor combines portability, high-quality visuals, and versatile connectivity for an unmatched on-the-go experience. Upgrade to the ViewSonic VG1655 today and take your productivity and entertainment to the next level. Specifications: Display : 16″ IPS Resolution : FHS 1920×1080 Refresh Rate : 60Hz Response Rate : 6.5ms Interface : USB-C
• Desk Stand LED / LCD / Plasma fits most 17″ to 30″ displays • Articulating stand with Rotation 360°, Swivel ±90° and Tilt angle +85° to 30° • Upright lift distance 10 ” (260mm) • Maximum extension 21 ” (535mm) • Supports load from 2 to 9 kg • Mounting VESA compliance 75×75, 100×100 mm 1 Year Warranty manufacturer link
BenQ MOBIUZ EX2710 27″ Display Screen Size 27 inch Panel Type IPS Backlight Technology LED backlight Resolution (max.) 1920×1080 Brightness (typ.) 350 nits Brightness (peak)(HDR) 400 nits HDR HDR10 Native Contrast 1000:1 Viewing Angle (L/R) (CR>=10) 178°/178° Response Times (GtG) 2 ms Response Times (MPRT) 1 ms Refresh Rate (Hz) 144 Color Gamut 99% sRGB Color Mode Cinema HDRi, ePaper, FPS, Game HDRi, HDR, M-Book, Racing game, RPG, sRGB, Standard Aspect Ratio 16:9 Display Colors 16.7 million color PPI 82 Display Screen Coating Anti-Glare Color Temperature Bluish, Normal, Reddish, User Define Gamma 1.8 – 2.6 HDCP 2.2 OSD Language Arabic, Chinese (simplified), Chinese (traditional), Czech, Deutsch, English, French, Hungarian, Italian, Japanese, Korean, Netherlands, Polish, Portuguese, Romanian, Russian, Spanish, Swedish AMA Yes Audio Built-in Speaker 2.5Wx2 Headphone Jack Yes Power Voltage Rating 100 – 240V Power Supply Built-in Power Consumption (normal) 22 W Power Consumption (max) 58 W Power Consumption (sleep mode) <0.5 W Dimension and Weight Tilt (down/up) -5˚ – 20˚ Swivel (left/right) 20˚/ 20˚ Height Adjustment Stand 130 mm Dimensions (HxWxD) (mm) 409.6 – 539.6×614.1×216.7 Dimensions (HxWxD) (inch) 16.1 – 21.2×24.2×8.5 Dimensions (HxWxD) (w/o Base) (mm) 382.2×614.1×64.1 Dimensions (HxWxD) (w/o Base) (inch) 15.1×24.2×2.5 Net Weight (kg) 6.2 Net Weight (lb) 13.7 Net Weight (w/o Base) (kg) 4 Net Weight (w/o Base) (lb) 8.8 VESA Wall Mount 100×100 mm Accessories Other Accessories QSG, Warranty Card Connectivity HDMI (v2.0) 2 DisplayPort (v1.2) 1 Eye Care Flicker-free Technology Yes Low Blue Light Yes Brightness Intelligence Plus (B.I.+) Yes Color Weakness Yes ePaper Yes Certification TUV Certificate Flicker-free, Low Blue Light Video Enjoyment HDRi Yes Professional Video Format Support Yes Specifications: BenQ MOBIUZ EX2710 27″ Screen Size 27 inch Panel Type IPS Backlight Technology LED backlight Resolution (max.) 1920×1080 Brightness (typ.) 350 nits 1 Year Warranty
The Samsung 85-Inch QLED 4K Smart TV QA85Q7FAAUXTW delivers a premium large-screen viewing experience with advanced QLED display technology. It produces bright, sharp, and colorful images, so movies, sports, and games look immersive and detailed on the massive 85-inch screen. QLED technology uses Quantum Dot enhancement to improve brightness and color accuracy. As a result, visuals appear more vivid and balanced across both dark and bright scenes. This helps maintain consistent picture quality in different lighting conditions and content types. Samsung Vision AI enhances picture and sound in real time. It analyzes each scene and automatically adjusts brightness, sharpness, and color for optimal results. Therefore, the TV consistently delivers improved visuals without manual tuning. In addition, AI upscaling improves lower-resolution content closer to 4K quality for better clarity and detail. HDR support expands contrast and color depth, making visuals more dynamic and lifelike. Fast motion handling also improves clarity, which enhances sports and action content by reducing blur and improving smoothness. The Smart TV platform provides easy access to streaming apps, gaming features, and smart home controls. It runs smoothly and allows quick switching between applications. In addition, the slim design with thin bezels gives the Samsung 85 QLED 4K Smart TV QA85Q7FAAUXTW a modern and premium appearance suitable for large living spaces. Overall, this Samsung QLED TV combines strong brightness performance, AI optimization, and smart connectivity for an immersive home entertainment experience. Specifications: QLED technology delivers bright and vivid picture quality 85-inch 4K display provides immersive large-screen viewing Vision AI optimizes picture and sound automatically in real time HDR improves contrast, brightness, and color depth Smart TV platform supports apps, streaming, and smart features
The SAMSUNG 27A804UJN Monitor delivers sharp visuals with 4K UHD resolution and IPS technology. First, it provides accurate colors and wide viewing angles for work and entertainment. The monitor features a 27-inch display, 60Hz refresh rate, and 300 nits brightness. In addition, it includes HDMI and DisplayPort for easy connection to multiple devices. Moreover, the adjustable stand supports height and tilt for better comfort. Therefore, users can enjoy clear images, smooth performance, and a flexible setup for daily use. Specifications: 27″ UHD 3840 x 2160 resolution delivers sharp and detailed images IPS panel provides accurate colors and wide viewing angles 60Hz refresh rate ensures smooth performance for daily tasks HDMI and DisplayPort enable easy connection to multiple devices Height and tilt adjustment improves comfort and viewing position
OEM-quality left and right loudspeaker replacement pair for MacBook Pro 14″ (Model A2442, 2021, M1 Pro/Max)—restores Apple’s high-fidelity six-speaker audio system with precise sound staging, rich bass, and clear highs. Compatible With: MacBook Pro 14-inch (2021, Model A2442) with Apple M1 Pro or M1 Max chip (Model Identifier: MacBookPro18,3 or MacBookPro18,4). Includes: Complete left and right speaker assemblies, each containing: Dual-driver units (force-cancelling woofers + tweeters) Pre-attached flex cables with OEM connectors Mounting brackets and acoustic seals Dual-driver units (force-cancelling woofers + tweeters) Pre-attached flex cables with OEM connectors Mounting brackets and acoustic seals Audio Performance: Matches Apple’s advanced six-speaker sound system with: Wide stereo separation High dynamic range Spatial audio and Dolby Atmos support (when paired with original logic board and firmware) Wide stereo separation High dynamic range Spatial audio and Dolby Atmos support (when paired with original logic board and firmware) OEM Build Quality: Precision-engineered housings with exact acoustic chambers, grille alignment, and cable routing—ensures zero rattling and full macOS audio calibration compatibility. Common Use Cases: Replaces speakers damaged by liquid ingress, physical impact, or internal failure (e.g., no sound, distorted audio, or imbalance between channels). Installation Note: Requires full bottom case and logic board disassembly. Speakers are secured with screws and acoustic adhesive. Highly recommended for certified Apple technicians or experienced professionals only due to complex internal layout and sensitivity of audio components. Important: This speaker pair is exclusive to A2442 (14″, 2021, M1 Pro/Max). Not compatible with 16″ MacBook Pro (A2485), 13″ models, or Intel-based MacBooks. This speaker pair is exclusive to A2442 (14″, 2021, M1 Pro/Max). Not compatible with 16″ MacBook Pro (A2485), 13″ models, or Intel-based MacBooks. Model Verification: Confirm your device via > About This Mac > Model Identifier (must be MacBookPro18,3 or MacBookPro18,4).
A1932 A2179 A1965 Battery for MacBook Air 13″ Retina (2018 2019, Early 2020) EMC 3184 3302 MRE82 MRE92 MVFH2 MWTJ2 MVH22 MVFM2 MVFK2 MREE2 MREC2 MREA2 MREF2 MUQT2 MUQU2 MacBookAir8,1 8,2 9,1 📄【Specification】Voltage: 11.4V. Capacity: 49.9Wh 4379mAh. Battery Type: Li-Polymer. Condition: Brand new, from high quality materials, top circuit boards and smart chip. 🔋【Replace Part Number】A1965 A1932(EMC 3184) A2179(EMC 3302) 3ICP4/63/119 MacBookAir8,1 MacBookAir8,2 MacBookAir9,1. 💻【Compatible Models】Only fit for MacBook Air 13″ (Model A1932 & Model A2179) Release 2018 2019 2020, fit for MRE82LL/A, MVFH2LL/A, MVFM2LL/A, MVFK2LL/A, MVFJ2LL/A, MVFN2LL/A, MVFL2LL/A, MREE2LL/A, MREC2LL/A, MREA2LL/A, MREF2LL/A, MRE92LL/A, MWTJ2LL/A, MVH22LL/A, MVH52LL/A, MVH42LL/A, MWTL2LL/A, MWTK2LL/A. Please kindly check the model number at the bottom of your laptop (A****). NOT FIT FOR MODEL A2337. 💻【ANTIEE Promise】Each products has undergone rigorous testing to ensure the correct voltage, circuit protection, stable current, low self-discharge and CE / FCC / RoHS Certified for safety. About 500 recharge cycles over the life.
The ViewSonic 22″ 75Hz Monitor offers a superb viewing experience with its high-quality display. Whether you’re working, gaming, or watching videos, this monitor delivers vibrant and crisp visuals. With Full HD 1080p resolution, the ViewSonic 22″ 75Hz Monitor provides sharp and clear images. Enjoy your favorite content with stunning detail and lifelike colors, making every viewing session a pleasure. The 75Hz refresh rate ensures smooth and fluid motion, reducing screen tearing and stuttering. This makes the ViewSonic 22″ 75Hz Monitor ideal for gaming and fast-paced videos, enhancing your overall experience. Designed for comfort and convenience, this monitor features an anti-glare screen to reduce eye strain. The ViewSonic 22″ 75Hz Monitor also has a flicker-free technology and blue light filter, ensuring a comfortable viewing experience even during extended use. Connectivity is a breeze with the ViewSonic 22″ 75Hz Monitor. It comes with HDMI and VGA ports, allowing you to connect a variety of devices with ease. Whether it’s your computer, gaming console, or media player, this monitor has you covered. The sleek and modern design of the ViewSonic 22″ 75Hz Monitor complements any workspace or gaming setup. Its slim profile and minimalistic stand make it a stylish addition to your desk, saving space without compromising on performance. In conclusion, the ViewSonic 22″ 75Hz Monitor combines high resolution, smooth refresh rate, and ergonomic design for an exceptional viewing experience. Upgrade to the ViewSonic 22″ 75Hz Monitor today and enjoy superior performance and style. Specifications: Display : 22″ IPS Resolution : FHD 1920 x 1080 Refresh Rate : 75Hz Response Rate : 5ms GTG
AOC Screen 23.8″ VA Panel Model name 24B2XHM Panel 23.8″ (VA) Pixel Pitch (mm) 0.2745 (H) × 0.2745 (V) Effective Viewing Area (mm) 527.04 (H) × 296.46 (V) Brightness (typical) 250 cd/m² Contrast Ratio 3000 : 1 (Typical) 20 Million : 1 (DCR) Response Time 6ms (GtG (BW)) Viewing Angle 178° (H) / 178° (V) (CR > 10) Color Gamut NTSC 80% (CIE1976) / sRGB 101% (CIE1931) Color Accuracy – Optimum Resolution 1920 × 1080 @ 75Hz – HDMI 1920 × 1080 @ 60Hz – VGA Display Colors 16.7 Million Signal Input VGA × 1, HDMI 1.4 × 1 HDCP Version – USB Hub no Power Supply 19V DC, 1.31A Power Consumption (typical) 21W Speakers no Line in & Earphone – Wall-Mount 100mm × 100mm Adjustable Stand Tilt: -5° ~ 20° Product without Stand (mm) 320.94 (H) × 539.47 (W) × 37.6 (D) Product with Stand (mm) 418.35 (H) × 539.47 (W) × 170.94 (D) Product without Stand (kg) 2.41 Product with Stand (kg) 2.73 Cabinet Color Black Regulatory Approvals CE / FCC Specifications: AOC Screen 23.8″ VA Model name 24B2XHM Panel 23.8″ (VA) Pixel Pitch (mm) 0.2745 (H) × 0.2745 (V) Effective Viewing Area (mm) 527.04 (H) × 296.46 (V) 1 Year Warranty Manufacturer Link
Late 2019 Apple MacBook Pro with 2.4GHz Intel Core i9 (16 inch, 16GB, 1TB SSD) 4GB AMD Radeon Pro 5500M Space Gray
Genuine-spec keyboard replacement for MacBook Air 13″ (Model A2179, 2020, Intel) — choose US QWERTY or UK QWERTY (with £ symbol). Features Apple’s reliable scissor-switch mechanism, backlighting, and OEM-fit design for seamless performance and aesthetics. Compatible With: MacBook Air 13-inch (2020, Model A2179, EMC 3597) with Intel Core i3/i5/i7 processors (non-M1). Layout Options (select at purchase): US Layout: Standard QWERTY with wide Enter key, @ above 2, # above 3, and full inverted-T arrow keys. UK Layout: QWERTY with £ symbol, tall vertical Enter key, @ accessed via right Alt, and UK-specific punctuation—matches Apple’s official UK regional configuration. US Layout: Standard QWERTY with wide Enter key, @ above 2, # above 3, and full inverted-T arrow keys. UK Layout: QWERTY with £ symbol, tall vertical Enter key, @ accessed via right Alt, and UK-specific punctuation—matches Apple’s official UK regional configuration. Keyboard Type: Traditional scissor-switch mechanism (not Butterfly, not Magic Keyboard)—robust, tactile, and serviceable, with good key travel and proven durability. Integrated Features: Full backlit keys for low-light use Ambient light sensor compatibility OEM-style ribbon cable pre-attached for direct logic board connection Full backlit keys for low-light use Ambient light sensor compatibility OEM-style ribbon cable pre-attached for direct logic board connection Precision Build: Molded to exact Apple specifications—ensures flush mounting, consistent key alignment, and seamless integration into the original top case. Installation Note: Keyboard is screw-mounted with light adhesive—more accessible than glued Butterfly/Magic keyboards. Requires top case access and battery disconnect. Suitable for intermediate DIYers or professional technicians. Important: This is keyboard only—does not include the top case, battery, trackpad, or logic board. Not compatible with M1 MacBook Air (A2337/A2338) or M2 models (A2681/A2941). This is keyboard only—does not include the top case, battery, trackpad, or logic board. Not compatible with M1 MacBook Air (A2337/A2338) or M2 models (A2681/A2941). Model Verification: Confirm your device is MacBook Air A2179 (13″, Intel, 2020) via > About This Mac > Model Identifier (e.g., MacBookAir9,1).
Original MacBook Pro 13″ (A2338) Display Assembly in Silver, including LCD, Retina panel, backlight, camera, Wi-Fi antennas, hinges, and aluminum lid. Compatible with M1 MacBook Pro 13″ (2020). Ideal for replacing cracked, damaged, or faulty screens. ✔️ Complete Display Assembly: Includes LCD, digitizer, housing, hinges, webcam, and antenna modules. ✔️ Retina Resolution: 2560 × 1600 native resolution with True Tone support. ✔️ Genuine Fit for A2338: Designed specifically for the MacBook Pro 13″ (A2338) – M1 2020 model. ✔️ Accurate Color & Brightness: 500 nits brightness, P3 wide color gamut, and high contrast. ✔️ Silver Aluminum Finish: OEM-grade aluminum lid matching the original color and texture. ✔️ Plug-and-Play Replacement: No programming required — direct connector compatibility. ✔️ Ideal for Repair: Suitable for replacing damaged, flickering, bleeding, or cracked screens.
The AOC 27G40 27″ 180Hz Gaming Monitor is built for serious gamers who want fast and smooth performance. It features a 27-inch Fast IPS screen with Full HD resolution. The colors are bright, and the details are sharp from every angle. With a 180Hz refresh rate, your games will run ultra-smooth and clear. Fast motion feels natural with no lag or delay. The 1ms response time helps reduce motion blur and ghosting during fast-paced scenes. Thanks to Adaptive-Sync, you won’t have screen tearing or stuttering. This makes gameplay seamless and enjoyable, even in intense battles. The monitor also supports HDR10 for improved contrast and color accuracy. It covers 128% of the sRGB color space, giving you bold and rich visuals. The screen reaches 300 nits of brightness, so everything stays clear in bright rooms. The AOC 27G40 27″ 180Hz Gaming Monitor includes HDMI 2.0 and DisplayPort 1.4 connections. You can easily connect your PC, console, or other devices. Its ergonomic stand lets you adjust the height, tilt, swivel, and pivot the screen. This helps you find the most comfortable viewing angle. You can also mount it using a VESA-compatible setup for more flexibility. Whether you’re gaming casually or competitively, this gaming monitor delivers excellent speed, clarity, and color. It’s built to meet the demands of modern gaming with style and comfort. Specifications: Display : 27″ Rapid IPS Resolution : 1920×1080 FHD Refresh Rate : 180Hz Response Rate : 0.5ms Speaker : 2W x2 Adjustable : Fully adjustable
slim, lightweight, and powerful—the Lenovo ThinkPad T490s combines 8th Gen Intel Core i5 performance, 8GB ,16GB RAM, and a fast 256GB SSD in a premium, portable chassis built for mobile professionals.
The Horion Interactive Flat Panel 98″ delivers immersive 4K visuals and interactive features for meeting rooms. It offers a large 98″ UHD 3840×2160 resolution screen with wide 178° viewing angles. Moreover, infrared touch technology supports up to 45 touch points with 1 mm precision. Also, built-in Android 13 provides fast response, smooth operation, and pre‑loaded educational apps. In addition, the panel includes a 48 MP AI camera with auto‑framing for professional video conferencing. Besides that, an 8‑array microphone picks up sound clearly up to 12 m across 180°. Furthermore, audio comes from two 20 W speakers plus a 20 W subwoofer for rich output. Therefore, online meetings feel natural, immersive, and clear. It supports AirPlay, Google Cast, and NFC mirroring for easy content sharing. Also, built-in pens let multiple users write simultaneously on-screen. Moreover, whiteboard tools include handwriting recognition, smart shapes, QR code capture, and cloud saving. It includes a quad-core ARM A73+A53 CPU and Mali G52 MP8 GPU with 8 GB RAM and 128 GB storage. Also, wireless dual-band Wi‑Fi 6, Bluetooth 5.3, NFC, HDMI, DP, Type‑C, USB, VGA, and LAN ports ensure connectivity. Additionally, brightness of around 380–430 cd/m² ensures clear visibility even in bright rooms. When needed, OPS modules provide Windows compatibility and extra storage options. Moreover, the panel supports screen splitting for up to four devices on one view. Importantly, the display includes tempered glass and an expected lifespan over 50,000 hours. Also, it comes with smart accessories like NFC pen security, remote control, cables, wall mount, and warranty. Finally, the Horion 98″ Interactive Flat Panel offers large-scale interactivity, crystal clarity, and conference-ready tools in one platform. Specifications: Display : 98″ Resolution : 4K (3840×2160) Refresh Rate : 60Hz CPU : Octacore Ram : 8GB Memory : 128GB GPU : Mali G52-MP8 OS : Android 13.0 Sensor : Infrared, NFC, Light Sensor
The AOC Q27G3Z is a high-end 27″ gaming monitor with a QHD resolution of 2560×1440. It uses a Fast IPS panel that delivers excellent color and speed. In addition, it supports a refresh rate of 240 Hz and a response time of 0.5 ms (MPRT) for ultra-smooth gameplay. Its adaptive sync support ensures tear-free visuals during fast action. The AOC Q27G3Z covers wide color gamuts: NTSC 110 %, sRGB 123 %, and DCI-P3 101 %. This makes it ideal not only for gaming but also for content creation. Moreover, it is VESA DisplayHDR 400 certified, so highlights pop and blacks look deeper. The brightness reaches around 400 cd/m², making it suitable in well-lit rooms. Connectivity includes two HDMI 2.0 ports and two DisplayPort 1.4 inputs for flexibility across consoles and PCs. Additionally, the ergonomic stand allows height adjustment, tilt, swivel, and pivot for comfortable viewing in any setup. Its sleek black & red design blends into gaming rigs easily. In short, the AOC Q27G3Z combines speed, clarity and color accuracy in one package. It is a great choice for competitive gamers and creators who want a balanced monitor that handles both performance and visuals well. Check out other option here! Specifications: Display : 27″ Fast IPS Resolution : 2560 x 1440 (QHD) Refresh Rate : 240Hz Response Rate : 0.5ms
About this item Multifunctional: retro portable speaker, supports Bluetooth transmission, U disk, memory card, AUX (connect to MP3, MP4 player, smartphone, PC) to play music. It is easy to enjoy stereo sound for music lovers. Long battery life: the Bluetooth speaker has a built-in 1500 mAh battery, is rechargeable and environmentally friendly, and offers a battery life of 8 hours so that you can enjoy your favorite music and radio stations for a long time. CLEAR SOUND The radio speaker with a built-in powerful DSP chip and antenna ensures excellent reception, allowing you to experience clear sound. The transmitters can be easily selected to find your favorite FM channels. POWERFUL: This wireless speaker is compact, but with high power, the 5W speaker delivers powerful sound quality. Allows you to enjoy the rich and impressive sound and transform your room into an enchanting listening environment. RETRO DESIGN The small wireless FM radio speaker with charming and versatile design combines classic aesthetics and is a delightful addition to your sound collection. Perfect for living room, bedroom, party, etc.
A1417 Battery Only for (Mid 2012 & Early 2013) A1398 MacBook Pro - Replacement Battery for A1398 MacBook Pro 15-inch Retina (Mid 2012, Early 2013 Version) - EMC 2512 or 2673 A1417 Battery Only for (Mid 2012 & Early 2013) A1398 MacBook Pro – Replacement Battery for A1398 MacBook Pro 15-inch Retina (Mid 2012, Early 2013 Version) – EMC 2512 or 2673 [11.26V/99Wh] A1417 A1398 Battery — Health:100%+, Voltage: 11.26V, Capacity: 99Wh(Please confirm the release year before purchase the battery) Suit for 15 inch A1398 MacBook Pro Battery Retina Mid 2012 Early 2013 (EMC 2512 or 2673) >[See more details on the Product Description] Brand new battery-> Directly warranty from Manufacturer, perform as good as the original battery. A1398 Macbook Pro 15 inch battery replacement come with adapted screwdriver. Multi-command chip control-> Contain with Durable A cells,Multi-command chip control makes the battery supply power stably.
