OEM-quality left and right loudspeaker replacement pair for MacBook Pro 15″ (Models A1707 – 2016/2017 and A1990 – 2018/2019)—restores rich, balanced stereo sound with precision acoustic tuning and seamless fit. Compatible With: MacBook Pro 15″ (2016) – Model A1707 (MacBookPro13,2) MacBook Pro 15″ (2017) – Model A1707 (MacBookPro14,2) MacBook Pro 15″ (2018) – Model A1990 (MacBookPro15,2) MacBook Pro 15″ (2019) – Model A1990 (MacBookPro15,2) (Note: Apple used the same speaker assembly across all four years of the 15″ Touch Bar MacBook Pro.) MacBook Pro 15″ (2016) – Model A1707 (MacBookPro13,2) MacBook Pro 15″ (2017) – Model A1707 (MacBookPro14,2) MacBook Pro 15″ (2018) – Model A1990 (MacBookPro15,2) MacBook Pro 15″ (2019) – Model A1990 (MacBookPro15,2) (Note: Apple used the same speaker assembly across all four years of the 15″ Touch Bar MacBook Pro.) Includes: Complete left and right speaker units with pre-attached flex cables and mounting brackets—ready for direct installation. Audio Performance: Engineered to match Apple’s original high-fidelity stereo system—delivers deep bass, clear mids, and crisp highs with wide soundstage and distortion-free playback. OEM Build Quality: Precision-molded housings, correct grille patterns, and exact cable routing ensure secure fit, no rattling, and full compatibility with macOS audio calibration. Common Use Cases: Replaces speakers damaged by liquid spills, physical impact, or wear (e.g., muffled sound, no audio from one side, crackling, or complete failure). Installation Note: Requires full display and logic board access. Speakers are secured with adhesive and screws in tight compartments. Recommended for certified or experienced technicians only. Important: This speaker pair is exclusive to 15″ Touch Bar MacBook Pro models (A1707/A1990). Not compatible with 13″ models (A1708/A1989), 16″ MacBook Pro (A2141), or non-Touch Bar MacBooks. This speaker pair is exclusive to 15″ Touch Bar MacBook Pro models (A1707/A1990). Not compatible with 13″ models (A1708/A1989), 16″ MacBook Pro (A2141), or non-Touch Bar MacBooks. Model Verification: Confirm your device via > About This Mac > Model Identifier (e.g., MacBookPro13,2 or MacBookPro15,2).
WIWU Hali Laptop Handbag - Water resistance 14" / 15.6" Black WIWU Hali Laptop Handbag – Water resistance 14″ / 15.6″ Black Handbag with many storage compartments The handbag has many storage compartments of different sizes so you can take your laptop, tablet, charging cable, notepad your mouse, and keyboard all with you to school, work, or on your trip. So you have the functionality of the bag. But also a stylish design. The advantages of the laptop bag at a glance: Made from sustainable materials Waterproof Inside length 38 cm Inside width 26.5 cm Inside height 2.5 cm
Genuine-spec US layout keyboard replacement for MacBook Air 13″ (Model A2338, 2020)—featuring Apple’s reliable Magic Keyboard with scissor-switch mechanism, backlighting, and full OEM fit for seamless repair. Compatible With: MacBook Air 13-inch (2020, Model A2338) – includes both Intel Core i3/i5/i7 and M1 chip variants. Keyboard Type: Apple’s Magic Keyboard with scissor-switch mechanism—offering improved durability, quieter typing, and 1mm key travel compared to older Butterfly keyboards. Layout: Standard US English (QWERTY), with full-size keys, inverted-T arrow keys, and dedicated function row. Integrated Features: Backlit keys for low-light use, ambient light sensor compatibility, and original-style ribbon cable connector for direct logic board connection. Precision Fit: Engineered to match Apple’s exact dimensions and mounting points—ensures flush alignment within the original top case. Installation Note: The keyboard is adhered to the top case and requires careful removal and re-gluing. Full disassembly is needed. Recommended for skilled technicians or professional repair centers.
Apple USB-C Charge Cable (1m) , With Apple Warranty This 1-metre charge cable is made with a woven design — with USB-C connectors on both ends — and is ideal for charging, syncing and transferring data between USB-C devices. Pair the USB-C Charge Cable with a compatible USB-C power adapter to conveniently charge your devices from a power point and take advantage of fast-charging capabilities. USB-C power adapters sold separately.
Looking for a monitor that delivers unparalleled visual performance? Look no further than the ViewSonic ColorPro 32″ 4K Monitor. With its cutting-edge technology and sleek design, it’s the ultimate choice for professionals and enthusiasts alike. Featuring a stunning 32-inch 4K display, this monitor brings your content to life with breathtaking clarity and detail. Whether you’re editing photos, designing graphics, or watching movies, every pixel pops with vivid color and crisp definition. Moreover, the ViewSonic ColorPro monitor is calibrated to deliver precise color accuracy, making it ideal for graphic design, photography, and video editing. Say goodbye to color distortion and enjoy true-to-life hues that enhance your creative workflow. But it’s not just about visuals—the ViewSonic ColorPro monitor also offers exceptional functionality. With advanced connectivity options like HDMI, DisplayPort, and USB-C, you can easily connect your devices for seamless multitasking. Additionally, the monitor’s ergonomic design ensures comfortable viewing during long hours of use. Adjustable tilt, swivel, and height settings allow you to find the perfect position for maximum productivity and comfort. In summary, the ViewSonic ColorPro 32″ 4K Monitor combines stunning visuals, precise color accuracy, and versatile connectivity to deliver an unparalleled viewing experience. Whether you’re a professional creator or a discerning enthusiast, elevate your display with ViewSonic ColorPro. Specifications: Display : 32″ IPS Resolution : 3840 x 2160 UHD Refresh Rate : 60Hz Response Rate : 5ms
Genuine-spec bilingual UK/Arabic layout keyboard replacement for MacBook Pro 13″ (Model A1708, 2016–2017)—featuring Apple’s second-generation Butterfly mechanism, backlighting, and OEM fit for seamless typing in both English and Arabic. Compatible With: MacBook Pro 13-inch with Touch Bar (2016 & 2017 models, A1708, Model Identifiers MacBookPro13,1 / MacBookPro14,1). Layout: Bilingual UK/Arabic—primary legends in Arabic, secondary (top-left) legends in UK English (QWERTY). Includes £ symbol, Arabic numerals (٠١٢٣…), and standard Arabic character set aligned with Apple’s regional configuration. Keyboard Type: Apple’s 2nd-generation Butterfly mechanism—thin profile with reduced key travel; requires careful handling and clean environment during installation. Integrated Features: Backlit keys (essential for low-light use—legends remain legible) Ambient light sensor support Original-style ribbon cable connector for direct logic board attachment Backlit keys (essential for low-light use—legends remain legible) Ambient light sensor support Original-style ribbon cable connector for direct logic board attachment Build & Fit: Precision-engineered to match Apple’s original dimensions, key alignment, and top-case curvature—ensures consistent actuation and aesthetic continuity. Installation Note: Keyboard is fully glued into the top case. Replacement requires complete disassembly, meticulous adhesive removal, and professional re-gluing. Recommended for certified or highly experienced technicians only.
Candc DC-C2 Lavalier Dual Head Mic Buy Online in Qatar, record high quality sounds using this branded duel mic. Candc DC-C2 is a Dual Omnidirectional lavalier microphone, designed for Smartphones, DSLR, Camcorders, Audio recorders PC, etc. PRODUCT DETAILS OF CANDC DC-C2 LAVALIER COLLAR MICROPHONE FOR CANON NIKON DSLR CAMCORDER
LENOVO 11.1V or 11.4V 24Wh 68 Laptop Battery 0C52861 45N1124 45N1775 45N1126 45N1127 For Lenovo ThinkPad X240 X240S X250 X260 X270 T440 T440S T450 T450S T460 T460P T470P T550 T560 W550 L450 L460 About this item Battery Type: 3-Cell Lithium-Ion Voltage &Capacity :11.1V 24Wh 2.09AH or 11.4V 24Wh 2.06Ah , in fact , 11.1V is same as 11.4V , because one cell voltage is 3.7V or 3.8V . SANISI Concept: The customer is god, Product Quality and Service must be perfect! We will let every customer feel satisfied Package Contents: 1 pcs Brand New Battery
HP E27q G5 QHD Monitor Firstly, the HP E27q G5 monitor is your gateway to an enhanced visual experience without breaking the bank. Whether you’re working, gaming, or indulging in multimedia content, this monitor has you covered. Secondly, one of the standout features of the HP E27q G5 is its Quad High Definition (QHD) display. This means you can enjoy crystal-clear visuals with sharp details for a wide range of tasks. The 27-inch screen size provides a generous canvas for all your computing needs, from productivity to entertainment. You get more screen real estate to enhance your multitasking capabilities. With a sleek and modern design, the E27q G5 monitor is a stylish addition to any workspace. It effortlessly blends with your existing setup, adding a touch of sophistication. Adjusting the monitor to your desired height is easy, thanks to its ergonomic design. Achieve the perfect viewing angle for comfort during extended work or gaming sessions. Connecting the HP E27q G5 is a straightforward process, and it’s compatible with standard ports for quick setup. No need to deal with complicated installation procedures. This monitor is a cost-effective choice for professionals, gamers, and multimedia enthusiasts. It offers top-notch features without straining your budget, making it an excellent investment. Specifications: QHD (2560 x 1440) 1000:1 5ms GtG (with overdrive) IPS
The Apple Magic Mouse (USB-C version) is a sleek, minimalist multi-touch wireless mouse built for Mac users. It offers smooth gesture support, Bluetooth connectivity and a built-in rechargeable battery — a great choice if you prefer a clean desk setup and full compatibility with macOS and iPadOS. General Name: Magic Mouse (USB-C) — part of Apple’s pointing-device lineup. Wireless connectivity: Bluetooth. Rechargeable battery: built-in, no disposable AA cells. Charging / port: USB-C port (bottom of mouse) for pairing and charging. Compatibility: Requires a Mac with macOS 15.1 or later, or an iPad with iPadOS 18.1 or later. Size & Weight Height: ~0.85 inch (2.16 cm) Width: ~2.25 inch (5.71 cm) Depth: ~4.47 inch (11.35 cm) Weight: ~0.22 pound (0.099 kg) (varies slightly by manufacturing) Features Multi-Touch surface: supports gestures such as swiping between pages, scrolling through documents, zooming. Glide / foot design: optimized for smooth movement across desktop surfaces. Rechargeable battery life: about a month or more between charges (typical use) per Apple spec. Used Condition ConsiderationsSince you’re specifying a used unit: Check for wear on the bottom feet / skates — these degrade and affect glide. Verify battery capacity / health (rechargeable batteries age). Confirm the port is functioning (USB-C) and Bluetooth connectivity is stable. Look for signs of excessive surface scratches on the multi-touch top — may impair gestures. Ensure the firmware / Mac recognizes it fully (gestures working). Upgradability / Limitations Not user-upgradable: You cannot replace the internal battery or change internals easily. Design limitation: The USB-C port remains on the bottom of the mouse, meaning you cannot use it while charging unless you flip it. This design is still criticized. Ergonomics: The flat, low-profile design is stylish but may not suit extended-use comfort for some users.
Genuine-spec touchpad flex cable for MacBook Pro 13″ (Model A2338, 2020, Apple M1)—essential for restoring full Force Touch functionality, haptic feedback, and precise multi-touch gesture control during trackpad repair or replacement. Compatible With: MacBook Pro 13-inch (2020, Model A2338, Model Identifier MacBookPro17,1) with Apple M1 chip (2 Thunderbolt ports). Part Type: Touchpad flex cable only — does not include the trackpad housing, Taptic Engine, or mounting hardware. This is the OEM-style ribbon cable that connects the trackpad to the logic board. Function: Transmits: Touch input coordinates Force Touch pressure data Haptic feedback signals to the Taptic Engine Enables full macOS gesture support: Force Click, three-finger lookup, swipe navigation, pinch-to-zoom, and smooth cursor tracking. Touch input coordinates Force Touch pressure data Haptic feedback signals to the Taptic Engine Enables full macOS gesture support: Force Click, three-finger lookup, swipe navigation, pinch-to-zoom, and smooth cursor tracking. OEM-Quality Build: Matches Apple’s original specifications in: Cable length and routing Connector pitch and ZIF latch design EMI shielding and flex durability Cable length and routing Connector pitch and ZIF latch design EMI shielding and flex durability Common Use Cases: Replacing a torn, creased, or liquid-damaged original flex cable Completing a trackpad replacement when the original cable is compromised Fixing intermittent trackpad behavior, loss of Force Touch, or complete unresponsiveness Replacing a torn, creased, or liquid-damaged original flex cable Completing a trackpad replacement when the original cable is compromised Fixing intermittent trackpad behavior, loss of Force Touch, or complete unresponsiveness Installation Note: Requires full bottom case removal and battery disconnection. Cable routes under internal components near the right speaker and logic board. Connects via a ZIF (Zero Insertion Force) socket—must be aligned carefully and latched gently. Recommended for experienced or certified technicians only. Requires full bottom case removal and battery disconnection. Cable routes under internal components near the right speaker and logic board. Connects via a ZIF (Zero Insertion Force) socket—must be aligned carefully and latched gently. Recommended for experienced or certified technicians only. Important Compatibility Notes: ✅ Only for A2338 (13″, M1, 2020) ❌ Not compatible with: Intel-based A2251 / A2289 (2020) MacBook Air M1 (A2337) Any MacBook Air or 14″/16″ MacBook Pro ✅ Only for A2338 (13″, M1, 2020) ❌ Not compatible with: Intel-based A2251 / A2289 (2020) MacBook Air M1 (A2337) Any MacBook Air or 14″/16″ MacBook Pro Intel-based A2251 / A2289 (2020) MacBook Air M1 (A2337) Any MacBook Air or 14″/16″ MacBook Pro
Apple 60W MagSafe Power Adapter (for MacBook and 13-inch MacBook Pro) The 60 Watt MagSafe Power Adapter features a magnetic DC connector that ensures your power cable will disconnect if it experiences undue strain and helps prevent fraying or weakening of the cables over time. In addition, the magnetic DC helps guide the plug into the system for a quick and secure connection. When the connection is secure, an LED located at the head of the DC connector will light up; an amber light lets you know that your portable is charging, while a green light tells you that you have a full charge. An AC lead is provided with the adapter for maximum lead length, while the AC wall adapter (also provided) gives users an even easier and more compact way to travel. Designed to be the perfect travelling companion, the adapter has a clever design that allows the DC cable to be wound neatly around itself for easy cable storage. This power adapter recharges the lithium polymer battery while the system is off, on, or in sleep mode. It also powers the system if you choose to operate without a battery. Compatible with MacBook and 13-inch MacBook Pro. See this article for more details about choosing the right one. Knowing which specific Mac model you have is important. If you are running OS X Lion (10.7) or later, go to the “” menu at the top left of your screen, choose “About this Mac” then click the “More Info…” button. Your Mac model and generation will be displayed. If you are running an earlier version of OS X, you can enter your serial number here to find out which model you have.
The MSI MAG 27CQ6PF 27″ 2K 180Hz Curved Gaming Monitor delivers smooth visuals and immersive gaming experiences. It is designed for competitive and casual gamers. This monitor combines high performance with stunning image quality. It features a 27-inch curved display for immersive viewing. The 1500R curvature brings you closer to the action. This provides a more natural and engaging experience. The MSI MAG 27CQ6PF offers 2K resolution for sharp details. You can enjoy crisp images in games and media. This improves clarity compared to standard Full HD monitors. With a 180Hz refresh rate, it ensures ultra-smooth gameplay. Fast action scenes feel fluid and responsive. This gives gamers a competitive edge in every match. The monitor also features a fast response time. It reduces motion blur and ghosting in fast-paced games. This provides clear visuals for intense gaming sessions. Adaptive sync technology ensures tear-free and stutter-free performance. It keeps gameplay smooth even during demanding scenes. This enhances your overall gaming experience. The MSI MAG 27CQ6PF includes multiple connectivity options. You can connect gaming consoles, PCs, and other devices. This makes it versatile for entertainment and work. Its sleek design with thin bezels adds style. It fits perfectly in gaming setups or workstations. The adjustable stand improves comfort during long sessions. In summary, the MSI MAG 27CQ6PF 27″ 2K 180Hz Curved Gaming Monitor combines speed, clarity, and immersion. It is perfect for gamers who demand performance. Specifications: Display : 27″ Rapid VA Screen : 2560 x 1440 (WQHD) Refresh Rate : 180Hz Response Rate : 0.5ms Curvature : 1500R
The Horion Interactive Flat Panel 98″ EDLA delivers immersive collaboration and boardroom-grade display features. It features a 98″ 4K UHD (3840×2160) LED touchscreen with up to 50-point Ultra Precision IR touch. Moreover, Android 13 with Google EDLA support ensures seamless access to Google Meet, Drive, and Docs. Also, the 48 MP AI camera auto frames active speakers for effective video conferencing. In addition, a full 8-array omnidirectional microphone system captures voice clearly from up to 12 m. Besides that, built-in audio includes two 20 W speakers and a 20 W bass speaker for rich sound. Furthermore, the panel uses dual‑band Wi‑Fi 6, Bluetooth 5.3, and NFC for wireless versatility. Therefore, mirroring and file sharing is fast and simple vianative casting or Miracast. It also offers USB‑C (video, audio, charge, touch), HDMI in/out, DisplayPort, VGA, Ethernet, and USB ports. Also, an ultra-fast response time (8 ms) keeps touch and annotation smooth. Plus, brightness is around 380–450 cd/m² and viewing angles reach 178° horizontally and vertically. The CPU combines quad-core A73 + quad-core A53 with Mali GPU, backed by 8 GB RAM + 128 GB storage. Importantly, the panel includes wireless dongle and smart pen for multi-user collaboration. Also, EDLA certification enables Google ecosystem integration including calendar, voting, and whiteboard apps. Moreover, touch latency below 30 ms ensures writing feels natural on-screen. For content sharing, the system supports built‑in voting, timers, and dual-screen mirroring control. Then, remote support and firmware updates keep the board secure and up to date. As a result, classrooms, boardrooms, and hybrid teams benefit from dynamic collaboration. In conclusion, the Horion 98″ EDLA provides advanced interactivity, strong WLAN, high-quality AV, and enterprise-level smart features. Finally, it is ideal for large-scale meetings, teaching, or creative teamwork. Specifications: Display : 98″ Resolution : 4K UHD 2160p Refresh Rate : 60Hz Ram : 8GB Storage : 128GB OS : Android 13.0
The ViewSonic VA240‑H 24″ 100Hz monitor delivers clear visuals for everyday use. Its Full HD panel shows sharp text and crisp images, making work, media, and web browsing easier to see. In addition, the IPS panel provides wide viewing angles so colors stay consistent from different positions. The 100 Hz refresh rate and 1 ms response time reduce motion blur and provide smoother video playback and casual gaming. Furthermore, built-in eye-care features like a blue light filter and flicker-free technology help reduce strain during long sessions. This monitor includes HDMI and VGA inputs for easy connection to laptops and desktops without extra adapters. Therefore, it suits home and office setups needing reliable display performance. Overall, the VA240‑H balances sharp visuals, smooth motion, and essential connectivity in a practical 24‑inch design. Specifications: 24″ Full HD (1920×1080) SuperClear IPS display 100 Hz refresh rate and 1 ms response time Wide viewing angles with consistent color Eye care features with blue light filter and flicker‑free HDMI and VGA connectivity, practical everyday performance
Genuine-spec touchpad flex cable compatible with both MacBook Air A2179 (Intel, 2020) and A2337 (M1, 2020)—restores full Force Touch functionality, haptic feedback, and precise multi-touch gesture control during trackpad repair or replacement. Compatible With: MacBook Air 13″ (2020, Intel) – Model A2179 (Model Identifier: MacBookAir9,1) MacBook Air 13″ (2020, Apple M1) – Model A2337 (Model Identifier: MacBookAir10,1) MacBook Air 13″ (2020, Intel) – Model A2179 (Model Identifier: MacBookAir9,1) MacBook Air 13″ (2020, Apple M1) – Model A2337 (Model Identifier: MacBookAir10,1) ✅ Important Note: Despite different processors (Intel vs. M1), Apple used the same trackpad assembly and flex cable in both A2179 and A2337. This makes the flex cable fully interchangeable between the two models. Part Type: Touchpad flex cable only — does not include the trackpad housing, Taptic Engine, or mounting hardware. This is the OEM-style ribbon cable that connects the trackpad to the logic board. Function: Transmits: Touch input coordinates Force Touch pressure data Haptic feedback signals to the Taptic Engine Enables full macOS gesture support: Force Click, three-finger lookup, swipe navigation, pinch-to-zoom, and smooth cursor tracking. Touch input coordinates Force Touch pressure data Haptic feedback signals to the Taptic Engine Enables full macOS gesture support: Force Click, three-finger lookup, swipe navigation, pinch-to-zoom, and smooth cursor tracking. OEM-Quality Build: Matches Apple’s original specifications in: Cable length and routing path Connector pitch and ZIF latch design EMI shielding and flex durability Cable length and routing path Connector pitch and ZIF latch design EMI shielding and flex durability Common Use Cases: Replacing a torn, creased, or liquid-damaged original flex cable Completing a trackpad replacement when the original cable is compromised Fixing intermittent trackpad behavior, loss of Force Touch, or complete unresponsiveness Replacing a torn, creased, or liquid-damaged original flex cable Completing a trackpad replacement when the original cable is compromised Fixing intermittent trackpad behavior, loss of Force Touch, or complete unresponsiveness Installation Note: Requires full bottom case removal and battery disconnection. Cable routes under the right side of the battery and logic board. Connects via a ZIF (Zero Insertion Force) socket—align carefully and latch gently. Recommended for experienced or certified technicians only. Requires full bottom case removal and battery disconnection. Cable routes under the right side of the battery and logic board. Connects via a ZIF (Zero Insertion Force) socket—align carefully and latch gently. Recommended for experienced or certified technicians only.
Laptop Battery Compatible for A31N1519 Battery for ASUS X540S X540L X540SA X540S X540LA-SI302 A540 F540 R540LA About this item Compatible model no. :- a31n1519, asus x540s x540l x540sa x540s x540la-si302 a540 f540 r540la Warranty not covered if defects due to external causes, accidental, physical or liquid damage, cut, burnt, misuse and missing warranty stickers or labels Battery capacity/power capability (mah/wattage) may be different from the reference picture but a backup of the battery will be the same as the original Please match your product with the image provided before placing the order for any help please get in touch with us.
A versatile pre-owned Lenovo ThinkPad L13 Yoga Gen 1 with 13.3" touchscreen, 360° hinge, 10th Gen Core i7, 16GB RAM, and 512GB SSD—perfect for professionals who need flexibility, performance, and portability.
Features Stylish and compact Bluetooth speaker, easy to carry. Supports wireless connectivity via Bluetooth. True Wireless Stereo (TWS): Connect two speakers simultaneously. Durable ABS plastic material with a fabric-covered front panel. Built-in microphone for hands-free calls. LED indicator to display working status. Water-resistant with an IPX7 rating. Continuous playback for 8-12 hours (depending on volume). 5-watt speaker delivering Hi-Fi audio quality. On-speaker controls for music playback and volume adjustment. Built-in battery with Type-C charging port for easy recharging. Technical Specifications Bluetooth Version: V5.4 Transmission Distance: 10 meters Rated Power: 5W Driver Unit: 40mm Input: DC5V Battery Capacity: 1200mAh Charging Time: 2 hours Playback Time: 8-12 hours (depending on volume)
PCE M8-700 UPS (line-interactive) — 700 VA / 360 W backup unit for 220–240 V input. Protects PCs, routers, small electronics from outages and voltage swings. The PCE M8-700 is a line-interactive UPS designed for home or small office use. It provides backup power, voltage regulation (AVR), surge protection, and supports automatic switching during outages. Ideal for desktop PCs, network gear, monitors, or point-of-sale systems. Features & Capabilities Line-interactive topology: regulates input voltage without switching to battery when voltage fluctuates mildly. Automatic Voltage Regulation (AVR) to correct undervolt/overvolt conditions. Simulated (stepped) sine wave output in battery mode. Surge, overload, short circuit, discharge protections built in. Cold start capability (ability to power on from battery with no mains) LED + audible alarms for status (battery mode, overload, fault) USB / RS232 interface in some variants for power management (shutdown, monitoring) Technical Specifications What “Input 220–240 VAC, 50/60 Hz, 3.7 A” Means (and Caveats) If the specification you’re giving is “3.7 A” at input, that corresponds to a maximum input current draw when the UPS is handling a heavy load or during charging cycles. At 230 V × 3.7 A ≈ 850 W of input capacity. The unit’s 360 W output means there’s overhead for losses, inverter inefficiency, battery charging, etc. The UPS must operate within the stated voltage and frequency ranges — if input is too low or too high, it may switch to battery or go into protection mode.
