Experience flagship performance with this pre-owned ThinkPad E14 Gen 2. Driven by an 11th Gen Intel Core i7 processor, 16GB RAM, and a 512GB NVMe SSD, this 14-inch laptop delivers high-speed responsiveness and modern features like Thunderbolt 4 for the ultimate professional setup.
The HP Series 5 Pro 23.8″ FHD USB‑C Conferencing Monitor delivers crisp visuals on a 23.8‑inch Full HD IPS screen with a 16:9 aspect ratio. Additionally, it features a built‑in 5 MP Poly Studio tiltable webcam. This webcam, combined with AI noise reduction, ensures clear video and audio during calls. Moreover, the monitor supports USB‑C video input with up to 100 W power delivery. It also provides USB‑C data transfer, HDMI 2.0, DisplayPort 1.4, USB‑A ports with one charging port, an audio combo jack, and an RJ‑45 Ethernet port. These connections simplify hybrid work setups. Furthermore, the ergonomic stand allows height adjustment for comfort. The ambient light sensor with HP Eye Ease reduces blue light while preserving color accuracy. The monitor incorporates recycled materials in its design and comes with a three‑year limited warranty for peace of mind. Specifications: 23.8″ Full HD (1920 × 1080) IPS display with 350 nits brightness and 1500:1 contrast Built‑in 5 MP Poly Studio webcam with AI noise reduction USB‑C video with up to 100 W power delivery and USB‑C data port HDMI 2.0, DisplayPort 1.4, USB‑A ports, Ethernet, and audio combo jack Ergonomic stand with height adjustment and HP Eye Ease ambient light sensor
The Riotouch 65″ Interactive Panel is designed to transform educational and professional environments with its cutting-edge features and user-friendly interface. This interactive flat panel offers a seamless blend of performance, connectivity, and intuitive design, making it an ideal choice for classrooms and conference rooms. Featuring a 65-inch 4K UHD display (3840 x 2160 resolution), the panel delivers crisp visuals and vibrant colors. Its 4mm anti-glare tempered glass ensures clear visibility from any angle, reducing eye strain during prolonged use. The panel supports up to 40-point multi-touch and 20-point multi-writing capabilities, allowing multiple users to interact simultaneously. This feature fosters collaborative learning and dynamic presentations, enhancing engagement and productivity. Powered by a quad-core Cortex-A55 processor and equipped with 4GB RAM and 32GB storage, the Riotouch panel ensures smooth performance. Its dual operating system support (Android and Windows) provides versatility, accommodating various software applications and user preferences. Connectivity is robust, with multiple ports including HDMI, USB 3.0, USB-C, VGA, and RJ45, facilitating easy integration with other devices. Built-in Wi-Fi and Bluetooth capabilities enable wireless connections, promoting a clutter-free workspace. The panel comes with integrated 2x15W front-facing speakers, delivering clear audio for multimedia presentations. Additionally, it includes a built-in 13MP 4K camera and microphone, supporting high-quality video conferencing and remote collaboration. Designed with user convenience in mind, the Riotouch panel features intuitive front controls for power, volume, and input selection. Its slim aluminum frame and wall-mountable design ensure it fits seamlessly into any environment. In summary, the Riotouch 65″ Interactive Panel combines high-resolution display, multi-touch interactivity, and versatile connectivity, making it a comprehensive solution for modern collaborative spaces. Specifications: Display : 65″ 4K UHD Touch Memory : 4GB Storage : 32GB OS : Android 11
WiWU ZM‑901 – Sturdy foldable aluminum stand with adjustable angles and silicone pads, weighing just 900 g.Enhances posture, airflow, and workspace ergonomics while staying compact and travel-friendly. Model: WiWU ZM‑901 Material: Metal (aluminum/carbon steel) frame with silicone pads for grip Dimensions (Folded): 260 × 225.5 × 53 mm Package Size: 290 × 250 × 50 mm Net Weight: Approx. 900 g Compatibility: Fits laptops, tablets, and smartphones up to ~17 ” (some listings note 15.6″ limit, but device capacity varies) Features: Adjustable angle configuration, detachable foldable design for portability, silicone surface pads for anti-slip and vibration reduction Build & Design: Durable yet lightweight, crafted to enhance airflow and promote ergonomic posture
Size 34″ Display Type IPS Color Gamut (Typ.) sRGB 99% (CIE1931) Color Depth (Number of Colors) 16.7M Pixel Pitch (mm) 0.312 x 0.310 mm Response Time (GTG) 5ms (GtG at Faster), 1ms MBR Refresh Rate 75Hz Aspect Ratio 21:9 Display Resolution UW-FHD Resolution 2560 x 1080 Brightness 400cd/m² Contrast Ratio 1000:1 Viewing Angle 178º (R/L), 178º (U/D) Surface Treatment Anti-Glare INPUT/OUTPUT HDMI Yes x 1 DisplayPort Yes x 1 USB Type-C Yes (DP Alternate Mode) Headphone Out Yes POWER Type Adapter Input 100-240 Vac, 50/60Hz Power Save/Sleep Mode (Max.) Less than 0.5W DC Off (Max.) Less than 0.3W Power Consumption (Typ.) 30W Power Consumption (Max.) 40W SPECIAL FEATURES Color Weakness Mode Yes Adaptive Sync AMD FreeSync™ Black Stabilizer® Yes Dynamic Action Sync® Yes Crosshair® Yes Flicker Safe Yes Smart Energy Saving Yes Reader Mode Yes Super Resolution+ Yes Color Calibrated Yes Dual Controller Yes OnScreen Control (OSC) Yes HDR (High Dynamic Range) HDR10 VESA DisplayHDR™ DisplayHDR™ 400 HDR Effect Yes Auto Input Switch Yes Motion Blur Reduction Technology Yes FreeSync (Low Frame Compensation) Yes 1ms Motion Blur Reduction Yes SOUND Speaker No Built-in Speaker DIMENSIONS/WEIGHTS With Stand (WxHxD) 32.2″ x 22.4″ x 9.4″ (Up), 32.2″ x 18.0″ x 9.4″ (Down) Without Stand (WxHxD) 32.2” x 14.4” x 1.8” Shipping Dimensions (WxHxD) 37.0″ x 20.3″ x 8.6″ With Stand Weight 17.4 lbs Without Stand Weight 13.2 lbs Shipping Weight 24.0 lbs STAND Display Position Adjustments Tilt/Height CABINET/ACCESSORIES Wall Mount Size (mm) 100 x 100 mm HDMI Yes 3 Years Warranty manufacturer link
In the landscape of monitors, the ViewSonic VX3218C-2K stands out as a cutting-edge solution, offering immersive visual brilliance and advanced features for an unparalleled viewing experience. Transitioning to its key features, the VX3218C-2K excels in providing a stunning 2K resolution. This monitor is designed to deliver crisp and detailed visuals, ensuring a visually captivating experience for work, gaming, or entertainment. Moreover, this display impresses with its sleek and modern design. The ViewSonic VX3218C-2K not only enhances the aesthetics of your workspace but also ensures a slim profile and minimal bezels, creating an immersive viewing environment. In addition to its functionality, the VX3218C-2K offers user-friendly controls and versatile connectivity options, ensuring a seamless and adaptable experience. This monitor effortlessly adapts to various settings, providing flexibility for different viewing preferences. Furthermore, ViewSonic’s commitment to user satisfaction is evident in the VX3218C-2K’s enhanced color technology and eye-care features. It’s a reliable companion for extended viewing sessions, offering both visual excellence and comfort. In conclusion, the ViewSonic VX3218C-2K redefines immersive brilliance, combining high-resolution visuals, sleek design, and user-friendly features. Elevate your viewing experience effortlessly with the VX3218C-2K – your gateway to an immersive and captivating visual journey! Specifications Curve : 1500R Refresh Rate : 165Hz Response Rate : 1ms Ultra-Fast Input Technology : AMD FreeSync Premium ViewMode: Game/Movie/Web/Text/Mono Speaker : 2W Dual Speakers Colors : HDR10 Input : HDMI
The Lenovo L24E-30 24″ 60Hz Monitor offers a perfect blend of style and performance for your computing needs. Whether you’re working, gaming, or streaming, this monitor delivers an exceptional visual experience. With its 24-inch Full HD display, the Lenovo L24E-30 provides crisp and clear visuals. Enjoy stunning detail and vibrant colors that bring your content to life, whether you’re editing photos or watching videos. The 60Hz refresh rate of the Lenovo L24E-30 ensures smooth and fluid motion, reducing screen tearing and ghosting. This makes it ideal for fast-paced games and dynamic videos, offering a more immersive experience. Designed with a slim and sleek profile, the Lenovo L24E-30 adds a modern touch to any workspace. Its narrow bezels create a seamless multi-monitor setup, allowing you to expand your view effortlessly. Featuring AMD FreeSync technology, the Lenovo L24E-30 synchronizes the monitor’s refresh rate with your graphics card. This reduces screen stuttering and provides a smoother gaming experience, even during intense action scenes. The Lenovo L24E-30 24″ 60Hz Monitor is equipped with multiple connectivity options, including HDMI and VGA ports. This ensures compatibility with a wide range of devices, making it a versatile addition to your setup. For comfortable viewing, the Lenovo L24E-30 includes eye-care features like low blue light and flicker-free technology. These features help reduce eye strain during long hours of use, enhancing your overall comfort. In conclusion, the Lenovo L24E-30 24″ 60Hz Monitor combines stylish design, smooth performance, and eye-care features for an outstanding viewing experience. Upgrade to the Lenovo L24E-30 today and enjoy enhanced productivity and entertainment. Specifications: Display : 24″ VA Resolution : FHD 1920 x 1080 Refresh Rate : 60Hz Response Rate : 4ms
Kingston DataTraveler Exodia (DTX) – Reliable, high-speed flash drive featuring a practical, protective cap design. Delivers USB 3.2 Gen 1 performance for quick and effortless file transfers, ideal for everyday use at work, home, or school. ✅ Full Specifications: Model: Kingston DataTraveler Exodia (DTX/64GB) Interface: USB 3.2 Gen 1 (Backward compatible with USB 3.0 and USB 2.0) Read Speed: Standard USB 3.2 Gen 1 transfer speeds Capacity Options: 64GB / 128GB / 256GB. Material: Durable matte plastic casing Design: Lightweight with a protective cap and a large, color-coded keyring loop (Teal for 64GB) Security/Software: Plug-and-play functionality (No software installation required) Compatibility: Windows 11, 10, macOS (v.10.15.x+), Linux (v. 4.4+), Chrome OS Dimensions: Approx. 67.3 x 21.04 x 10.14 mm Weight: Approx. 11 grams
The MSI Pro MP272 E14C is a 27‑inch FHD monitor built for business and productivity. It delivers clear Full HD visuals with a fast 144 Hz refresh rate. Furthermore, its IPS panel provides wide viewing angles and accurate colors, making work and multimedia more enjoyable. It supports a 1 ms (MPRT) response time, which reduces motion blur in videos and fast‑moving content. In addition, Adaptive‑Sync technology helps smooth gameplay and reduce screen tearing. The monitor also includes HDR Ready support for improved contrast and detail. Moreover, the design features a four‑side slim bezel for a clean look and immersive viewing experience. It offers anti‑glare treatment and built‑in speakers for convenient multimedia use. As a result, the MSI Pro MP272 E14C enhances productivity and comfort whether you work, create, or play. . Specifications: 27‑inch FHD (1920 × 1080) IPS panel with wide viewing angles 144 Hz refresh rate with 1 ms (MPRT) response time Adaptive‑Sync support and HDR Ready for smooth visuals HDMI 2.0 and USB‑C (DP Alt Mode with 15 W PD) connectivity Built‑in speakers, anti‑glare surface, and slim bezel design
Genuine-spec US layout keyboard replacement for MacBook Pro (Model A1398, Late 2011–Mid 2012)—featuring durable scissor-switch keys, backlighting, and OEM-fit design for reliable typing and straightforward installation. Compatible With: MacBook Pro 13″: Late 2011 (Model A1278, but labeled A1398 in some regions) – Model Identifier MacBookPro8,1 MacBook Pro 15″: Early 2011, Late 2011, and Mid 2012 – Model Identifiers MacBookPro8,2 (15″ early/late 2011) and MacBookPro9,1 (15″ mid 2012) *(Note: “A1398” is primarily associated with the 15″ unibody MacBook Pro with Retina display (Mid 2012), which was the first Retina MacBook Pro.)* This keyboard fits the non-Retina 15″ A1398 (Mid 2012) and compatible Late 2011 models. MacBook Pro 13″: Late 2011 (Model A1278, but labeled A1398 in some regions) – Model Identifier MacBookPro8,1 MacBook Pro 15″: Early 2011, Late 2011, and Mid 2012 – Model Identifiers MacBookPro8,2 (15″ early/late 2011) and MacBookPro9,1 (15″ mid 2012) *(Note: “A1398” is primarily associated with the 15″ unibody MacBook Pro with Retina display (Mid 2012), which was the first Retina MacBook Pro.)* This keyboard fits the non-Retina 15″ A1398 (Mid 2012) and compatible Late 2011 models. Layout: Standard US English (QWERTY) with full-size keys, inverted-T arrow keys, and dedicated function row (F1–F12). Keyboard Type: Traditional scissor-switch mechanism—robust, tactile, and serviceable (pre-Butterfly era). Integrated Features: Backlit keys (adjustable brightness via F5/F6) OEM ribbon cable with ZIF connector Matches original key spacing and actuation force Backlit keys (adjustable brightness via F5/F6) OEM ribbon cable with ZIF connector Matches original key spacing and actuation force Build & Fit: Precision-molded plastic frame with exact screw mounts and alignment pegs—ensures secure, rattle-free installation in the top case. Installation Note: Keyboard is secured with screws and minimal adhesive. Requires full top case access and battery disconnect. Recommended for intermediate to advanced users or technicians.
The Samsung 43-Inch Full HD Smart TV UA43F6000FUXTW uses a 43-inch LCD panel with 1920 × 1080 resolution. It delivers standard Full HD picture quality for everyday TV viewing, streaming, and basic entertainment use. The display supports Full HD resolution, which shows clear and detailed images for HD content. In addition, Samsung picture processing improves lower-resolution sources to reduce noise and enhance clarity on the screen. The TV runs a native 60 Hz refresh rate. Also, motion processing helps reduce blur in fast-moving scenes such as sports and action content. Samsung equips this model with a Smart TV platform based on Tizen OS. Therefore, users can access streaming apps, online content, and basic smart features through a simple interface. Connectivity includes HDMI ports, USB ports, Wi-Fi, Bluetooth, Ethernet LAN, and optical audio output. In addition, the TV supports external devices such as game consoles, set-top boxes, and sound systems. This model focuses on Full HD resolution, essential smart TV functions, and basic connectivity without 4K resolution or advanced display processing features. Specifications: 43-inch LCD panel with 1920 × 1080 Full HD resolution 60 Hz native refresh rate display Tizen OS smart platform with streaming apps HDMI, USB, Wi-Fi, Bluetooth, Ethernet connectivity Supports external devices like consoles and media players
The Samsung 85″ QLED Q8F 4K Vision AI Smart TV (2025) | QA85Q8FAAUXTW delivers a premium large-screen entertainment experience with advanced QLED display technology. It produces bright, sharp, and colorful images, so movies, sports, and games look highly immersive on the massive 85-inch screen. QLED technology uses Quantum Dot color enhancement to improve brightness and color accuracy. As a result, visuals appear more vibrant and balanced across both dark and bright scenes. This helps maintain consistent image quality in different lighting conditions. 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 settings. In addition, AI upscaling enhances lower-resolution content closer to 4K quality for better clarity and detail. HDR support expands contrast and color depth, making images more dynamic and lifelike. Fast motion handling also improves clarity, which enhances sports and action content by reducing blur. The Smart TV platform provides 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 Q8F 4K Vision AI Smart TV (2025) | QA85Q8FAAUXTW a modern and premium look suitable for large living spaces. Overall, this Samsung QLED TV combines bright performance, AI optimization, and smart connectivity for an immersive home entertainment experience. Specifications: QLED technology delivers bright and colorful 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 LG 24GS65F-B 24″ 1ms 180Hz Gaming Monitor delivers fast and responsive performance for competitive gamers and entertainment users. It features a 24-inch screen that keeps every detail sharp and immersive while fitting nicely on most desks. Moreover, the high refresh rate brings smoother gameplay so you can see every move with clarity and precision. This monitor offers a rapid 1ms response time that reduces motion blur and ghosting during fast action. Additionally, the 180Hz refresh rate makes gameplay feel fluid and dynamic, especially during intense sessions. The vivid colors and clear visuals make games, movies, and work look more engaging. Its sleek design also fits well into gaming setups and home offices. The LG 24GS65F-B includes multiple connectivity options, making it simple to hook up your PC, console, or other devices. Furthermore, ergonomic features allow you to adjust tilt for more comfortable viewing during long sessions. Therefore, it suits both casual and competitive players who want performance and clarity. Finally, it balances fast performance, vibrant visuals, and user-friendly design for everyday use. Specifications: 24-inch gaming monitor Fast refresh rate for smooth gameplay Crisp visuals with vibrant colors Multiple connectivity options Sleek and ergonomic design
AOC 20E1H 20-inch LED monitor delivers basic and reliable performance for office tasks, study, and everyday computer use. It focuses on simple display quality, energy efficiency, and stable operation. Additionally, it features a 19.5-inch TN panel with HD+ resolution (1600 × 900). This resolution provides clear text and basic image detail, so it suits productivity and general use. Moreover, it supports a 60Hz refresh rate. As a result, it delivers standard smoothness for everyday tasks like browsing, documents, and video playback. The monitor includes a 5ms response time. Therefore, it handles basic motion cleanly with minimal blur for general usage. In addition, it offers HDMI and VGA connectivity. This allows easy connection to both modern and older PCs. Furthermore, it includes Flicker-Free technology and a VESA mount option. So it improves viewing comfort and gives flexible installation options. AOC 20E1H 20-inch LED monitor provides a compact, efficient, and practical display solution for everyday computing needs. Specifications: 19.5-inch TN panel with 1600 × 900 HD+ resolution 60Hz refresh rate for standard smooth performance 5ms response time for basic motion handling HDMI and VGA connectivity for wide compatibility Flicker-Free technology with VESA mount support
A sleek and responsive pre-owned MacBook Pro 15" (2015) with a brilliant Retina display, upgraded 16GB RAM, fast 128GB SSD, and efficient Intel Iris Pro graphics—ideal for students, developers, and everyday productivity.
Arabic Language Ultra Thin Silicone Keyboard Cover for 2021 2020 MacBook Air 13 Inch A2179 and A2337 Apple M1 Chip (US Layout) with Touch ID Keyboard Accessories Protective Skin (Black) Color Black-Arabic Compatible Devices 2021 2020 MacBook Air 13.3-Inch with Apple M1 Chip (model: A2337), 2020 MacBook Air 13.3-Inch (model: A2179)2021 2020 MacBook Air 13.3-Inch with Apple M1 Chip (model: A2337), 2020 MacBook Air 13.3-Inch (model: A2179) Material Silicone Special Feature Waterproof, Dust Proof About this item [√] COMPATIBLE WITH: ONLY U.S keyboard layout–MacBook Air 13″ with Touch ID Early 2020 (model: A2179) and 2021 2020 MacBook Air 13″ with Apple M1 Chip (model: A2337). [√] MORE PROTECTION for KEYBOARD: waterproof, dust-proof and dirt-proof design can prevent liquid, dust, cigarette ash, biscuit crumbs falling onto your keyboard to affect your keyboard’s life. [√] ACCURATE KEYS: every key is specially molded, manufactured to the quality available. Flexible, this cover is easy to apply and remove for cleaning or disinfecting. [√] 0.25 MM THICKNESS: ultra thin silicone keyboard cover skin, made it easier for typing. Soft keyboard protector can weaken the sound in typing. About this item [√] COMPATIBLE WITH: ONLY U.S keyboard layout–MacBook Air 13″ with Touch ID Early 2020 (model: A2179) and 2021 2020 MacBook Air 13″ with Apple M1 Chip (model: A2337). [√] MORE PROTECTION for KEYBOARD: waterproof, dust-proof and dirt-proof design can prevent liquid, dust, cigarette ash, biscuit crumbs falling onto your keyboard to affect your keyboard’s life. [√] ACCURATE KEYS: every key is specially molded, manufactured to the quality available. Flexible, this cover is easy to apply and remove for cleaning or disinfecting. [√] 0.25 MM THICKNESS: ultra thin silicone keyboard cover skin, made it easier for typing. Soft keyboard protector can weaken the sound in typing.
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
TP-Link TL-WR841N Router – 300Mbps Wi-Fi speed with 2 fixed antennas and 4 LAN ports.Ideal for home and small office use with support for multiple modes and secure encryption. Model: TP-Link TL-WR841N Wi-Fi Standard: IEEE 802.11b/g/n Frequency: 2.4GHz only Speed: Up to 300Mbps (Wireless N) Antennas: 2 Fixed 5dBi Omni-directional Antennas Ports: 1x WAN Port (10/100Mbps) 4x LAN Ports (10/100Mbps) Ports: 1x WAN Port (10/100Mbps) 4x LAN Ports (10/100Mbps) Security: WPA/WPA2, SPI Firewall, MAC address filtering Modes: Router, Range Extender, Access Point, WISP Wireless Features: SSID broadcast control, WDS bridging, bandwidth control Management: Web UI, TP-Link Tether App Dimensions: 192 × 134 × 33 mm
LED feature Specification Display size 60.5 cm (23.8 in) diagonal Display type IPS with LED backlight Panel active area 52.7 x 29.6 cm (20.7 x 11.7 in) Scan range Horizontal: 30 to 80 KHz Vertical: 50 to 60 Hz Brightness 250 nits Color support Up to 16.7 million colors with the use of FRC technology Color gamut 72% Pixel pitch 0.2745 (H) mm x 0.2745 (V) mm 93 PPI Inputs 1 VGA 1 HDMI Audio in/Audio out HDCP support Viewing angle Horizontal viewing angle (typical): 178 degrees Vertical viewing angle (typical): 178 degrees Recommended resolution (H x V) 1920 x 1080 @ 60 Hz (Full HD) Aspect ratio 16:9 Static contrast ratio 1000:1 Dynamic contrast ratio 10,000,000:1 Response time 6 ms GtG w/OD 14 ms GtG (typ) / 28 ms GtG (Max) Power supply External Power consumption 30 Watts max Tilt -5 to +25 degrees Dimensions W x D x H (unpacked): 54.1 x 18.3 x 40.9 cm (21.3 x 7.2 x 16.1 in) Weight Unpacked: 3.1 Kg (6.8 lbs) Specifications: HP Monitor 24ea 23.8-inch IPS Display Display size 60.5 cm (23.8 in) diagonal Display type IPS with LED backlight Panel active area 52.7 x 29.6 cm (20.7 x 11.7 in)
lenovo battery L16L2PB2 L16M2PB1 L16S2PB2 L16C2PB2 Laptop Notebook Battery for Lenovo 5000-15 2ICP6/55/90 Series 7.4V 30Wh 4050mAh About this item Condition: New Voltage: 7.4V Capacity: 30Wh/4050mAh Replace Part Number: L16M2PB1 L16L2PB2 L16M2PB2 L16S2PB1 L16L2PB3 L16C2PB1 L17L2PF1 L17M2PB7 L16C2PB2 L16L2PB1 L16M2PB3 2ICP6/55/90 Fit For: Lenovo 5000-15 Series Raise the battery life: 1: After receiving the battery, Please charge it fully, discharge it to around 10, and do it three times. 2: If you don’t use the battery for a long time, please charge and discharge it once a month
