New BT04XL 14.8V 52WH Notebook Battery for HP EliteBook Folio 9470 9470M 9480m Ultrabook BT04 BA06 HSTNN-IB3Z HSTNN-I10C 687945-001 H4Q47AA 687517-241 HSTNN-DB3Z 687517-171 BA06XL H4Q48AA About this item Battery type: Li-ion; Capacity: 52WH; Voltage: 14.8V; Cells: 6-cell. The battery compatible with P/N.: Spare 687517-171 687517-241 687945-001 696621-001; EliteBook Folio 9470 9470M 9480 9480M Series; fits HSTNN-DB3Z HSTNN-IB3Z HSTNN-I10C 687517-1C1 BT04 BT04XL BA06 BA06XL H4Q47AA H4Q48AA 100% New from Manufacturer. Up to 500 recharge cycles over the life of the battery. Grade A cells ensure fast charges and low power consumption. Grade A cells ensure fast charges and low power consumption; Built-in circuit protection ensures both safety and stability. Brand new from Manufacturer. Up to 500 recharge cycles over the life of the battery. Operation time for standard batteries: Around1.5~3.5 hours, the actual operation time will depend on how much electricity is required by the device and how you use it.
Transparent 2.5" USB 3.0 HDD/SSD Enclosure – Supports SATA drives up to 6TB with UASP and tool-free design.Fast, plug-and-play storage case using JMS578 chipset with crystal-clear ABS shell. Transparent 2.5″ USB 3.0 HDD/SSD Enclosure – Supports SATA drives up to 6TB with UASP and tool-free design.Fast, plug-and-play storage case using JMS578 chipset with crystal-clear ABS shell. Model: 2.5″ HDD/SSD Enclosure with JMS578 Chipset Material: Transparent ABS Plastic (durable and lightweight) Interface: USB 3.0 (backward compatible with USB 2.0 & 1.1) Chipset: JMS578 (JMicron) – supports UASP for faster data transfer Drive Compatibility: 2.5″ SATA I/II/III HDD or SSD Supports up to 6TB capacity Fits 7mm or 9.5mm thick drives Drive Compatibility: 2.5″ SATA I/II/III HDD or SSD Supports up to 6TB capacity Fits 7mm or 9.5mm thick drives Data Transfer Rate: Up to 5Gbps via USB 3.0 UASP support enables up to 20% faster transfers (with UASP-enabled OS) Data Transfer Rate: Up to 5Gbps via USB 3.0 UASP support enables up to 20% faster transfers (with UASP-enabled OS) Tool-Free Design: No screws needed – easy slide-in installation Hot Swappable: Plug and play, no drivers needed for most systems LED Indicator: Blue light for power and activity status Operating Systems: Windows 7/8/10/11, macOS, Linux Dimensions: Approx. 125 x 80 x 14 mm Cable Included: USB 3.0 cable (typically 30–50 cm)
WiWU A821CH 8‑in‑1 Stand & Dock – A foldable aluminum laptop stand with a built-in 8‑port USB‑C dock (two USB‑A, two USB‑C, HDMI 4K30, SD/TF, Gigabit Ethernet, PD 100 W).Enhances comfort, cooling, and functionality—perfect for decluttered, professional work setups. Model: WiWU A821CH Design: Sturdy aluminum alloy stand with foldable, portable design, hollow surface for cooling, and silicone pads to prevent slips Dimensions & Weight: Compact when folded (~400 g in aluminum) Docking Hub Ports: 2 × USB-C ports 2 × USB‑A 3.0 ports 1 × HDMI (up to 4K@30 Hz) SD + micro‑SD card slots 1 × RJ‑45 Gigabit Ethernet (1000 Mbps) Docking Hub Ports: 2 × USB-C ports 2 × USB‑A 3.0 ports 1 × HDMI (up to 4K@30 Hz) SD + micro‑SD card slots 1 × RJ‑45 Gigabit Ethernet (1000 Mbps) Power Delivery: USB-C PD 3.0 supports up to 100 W—can charge a laptop while using other ports Connectivity: HDMI supports up to 4K@30 Hz; Ethernet up to Gigabit speed Stand Features: Detachable base—can use stand and hub together or separately, with adjustable ergonomic angles and vents for airflow Durability: Aluminum alloy with frosted texture, scratch-resistant finish, tested to executive standards
A reliable pre-owned Dell Latitude 5480 with 14" display, 7th Gen Core i5, 8GB RAM, and 256GB SSD—offering solid business performance, security, and durability for everyday professional use.
Genuine-spec touchpad flex cable for MacBook Pro 15″ (Model A1990, 2018–2019, Intel)—essential for restoring full Force Touch functionality, haptic feedback, and precise multi-touch gesture control during trackpad repair or replacement. Compatible With: MacBook Pro 15-inch (2018 & 2019, Model A1990, Model Identifiers MacBookPro15,2) with Intel Core i7/i9 processors. 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 unusable 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 unusable 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.
The Apple 240W USB-C Charge Cable (2 m) is a durable, braided USB-C to USB-C cable that supports fast charging up to 240W and USB 2.0 data transfer—ideal for powering high-performance MacBooks and other USB-C devices. Length: 2 meters Connector: USB-C to USB-C Power Support: Up to 240W (48V/5A), compatible with the new USB-C PD 3.1 Extended Power Range standard Data Transfer: USB 2.0 speeds (up to 480 Mbps) — this cable prioritizes power delivery over high-speed data Ideal for charging MacBook Pro (2021 and later), MacBook Air (M2 and later), and other high-power laptops Backward-compatible with lower-wattage devices (iPad, iPhone 15 lineup, etc.) Works with any USB-C power adapter, but you’ll only get full 240W output when paired with a compatible high-wattage charger The standard USB-C Charge Cable (2 m, 60W/100W) only supports up to 100W. The Thunderbolt 4 Pro Cable (3 m) supports high-speed data (40 Gb/s) and video output, but maxes at 100W charging. This 240W version is the one to get if your priority is maximum charging power rather than data/video.
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.
GAMDIAS Hermes E3 RGB Mechanical Gaming Keyboard Blue Switch with 19 Built-in Lighting Effects Certified Optical Switches and N-Key Rollover & Anti-Ghosting Functionality (Hermes E3 Black) About this item Extreme Gaming RGB Lighting Modes: This wired keyboard has 19 Build-in RGB backlight modes powered by 16.8 million RGB backlighting for gamers and provide comfortable ambient light for typing. It comes with the adjustable brightness and WASD and Arrow Keys Exchange 8 Additional Multimedia Keys. Compact 60 Percent Design for Mobility: The 60% gaming keyboard is a compact 61-key elegant design for both gaming and office typing for computers, PC and desktops. Blue Switches & Full Anti-ghosting: The classic blue switches provide tactile and audible feedback, deliver accurate and responsive key commands. All keys are fully conflict-free, the perfect choice for intense gameplay and fast typing. All key can be reassigned and macros can be created for effortless operation. Ergonomic & Portable design: The 61 key compact keyboard is not only easy to operate and store, but it also boasts its solid front plate and comes in Classic Black or White touch-up to fit flawlessly into all battle stations. Superior Control: Gain complete control using the responsive mechanical switches with a built-in vertical LED perception sensor and anti-ghosting with N-Key rollover.
The Cudy WR1300 AC1200 Router delivers fast and stable internet with dual-band WiFi speeds up to 1200Mbps. Designed for home and office use, it features Gigabit ports for high-speed wired connections and reliable coverage for streaming, gaming, and everyday browsing. AC1200 Dual Band WiFi – Combined speeds of up to 1200Mbps (300Mbps on 2.4GHz + 867Mbps on 5GHz) for smooth streaming and online gaming. Gigabit Ethernet Ports – Ultra-fast LAN/WAN ports ensure maximum wired performance for PCs, consoles, and smart TVs. Wide Coverage – Equipped with high-gain antennas to provide strong and stable WiFi signal throughout your home or office. Multiple Operating Modes – Supports Router, Access Point, and Repeater modes for flexible network setup. Easy Setup & Management – Simple web interface for quick installation and control. Secure Connection – Advanced wireless security with WPA/WPA2 encryption to keep your network safe. 1 × Gigabit WAN Port 4 × Gigabit LAN Ports Wi-Fi 2.4GHz & 5GHz Dual Band Ethernet (RJ45) Wireless Security (WPA/WPA2)
Material: Plastic + Mesh fabric Bluetooth version/chipset: 5.4/ATS2853 Transmission Distance: 12M Working voltage: 18.5V Impedance: 4Ω Speaker power: Tweeter: 50W * 2 Subwoofer: 200W Battery (mAh):30000mAH/18.5V*6000;18650/2000mA*15; 3 in series and 5 in parallel Charging time: about 3 hours Calling: 20 hours Music playback: 12 hours Standby time: 6 months 1.5.4 wireless, fast, stable, and efficient connection, excellent sound quality 2 . Sound Card/Karaoke/wireless speaker, all in one, built-in DSP, multiple EQ settings, support internal monitoring/recording/live streaming function, 433/360° omnidirectional remote control (can work through walls) 3. Efficient speakers and power amplifier for loud sound and high-fidelity music playback 4,30000mAh power bank (18.5V*6000mAh; 18650/2000mA*15; 3 in series and 5 in parallel), colorful lights available in various modes, controllable flashing lights CTN GW: 18.5kg ± 0.2kg Carton size: 50.5 * 44.2 * 39cm
Reliable, compact, and business-focused—the Dell Latitude 5310 features a 10th Gen Intel Core i5 processor, 8GB RAM, and a fast 256GB SSD in a lightweight 13.3-inch design built for everyday productivity.
New RI04 RI06XL Notebook Battery for HP ProBook 450 455 470 G3 Envy 15-Q001TX Laptop Series Fit P/N Spare 805294-001 811063-421 805047-851 P3G15AA HSTNN-DB7B HSTNN-PB6Q About this item Battery Type: Li-ion Capacity: 2600Mah ; Cells: 4-cell; Voltage: 14.8V Compatible: HP ProBook 450 455 470 G3 Envy 15-q000 Notebook PC series Fits: HP R104 R106XL P3G16AA HSTNN-DB7B HSTNN-PB6Q HSTNN-LB6Z HSTNN-Q94C HSTNN-Q95C HSTNN-Q97C RIO4 RIO6XL Spare 805047-851 805294001 805047-851 811063-421 Notebook Laptop Battery 100% New from Manufacturer. Up to 500 recharge cycles over the life of the battery. CE-/FCC-Certified for safety
Haixun F20 Barcode Reader – USB 2D handheld scanner supports QR, PDF417, and 1D barcodes.Fast and reliable for retail, inventory, and logistics with plug-and-play setup. Model: Haixun F20 Type: 2D Handheld Barcode Scanner Supported Codes: 1D: EAN-13, UPC-A, Code 39, Code 128, Codabar, etc. 2D: QR Code, PDF417, DataMatrix, etc. Supported Codes: 1D: EAN-13, UPC-A, Code 39, Code 128, Codabar, etc. 2D: QR Code, PDF417, DataMatrix, etc. Sensor Type: CMOS imaging sensor Interface: USB (Plug and Play, no driver needed) Scan Mode: Manual trigger / Continuous / Auto-sensing Scan Speed: Up to 300 scans/sec Resolution: ≥ 4mil (0.1mm) Light Source: Red LED + White fill light Compatibility: Windows, Android, macOS, Linux Design: Ergonomic grip for long use Durable ABS plastic body Design: Ergonomic grip for long use Durable ABS plastic body Cable Length: Approx. 1.5 – 2 meters Power Supply: 5V (via USB) Applications: Retail, Warehouse, POS, Inventory, Logistics
GAMDIAS AURA GK2 White & Black | Full-Size Wired Mechanical Keyboard | Tactile Mechanical Switches | Multi-Colour Backlit Switches | 10 Built-in Hot Keys | 50 Million Switch Lifecycle | USB-A About this item Gamdias AURA GK2 is a wired mechanical keyboard designed to complement your gaming experience and skills. We have added multiple functionality features to make the AURA GK2 a high-performance keyboard. Each key has a 50 Million Key Press Lifecycle over the standard 20 million. This enables the keyboard to stay efficient and provide accurate feedback even after a longer use period. The Keyboard has been designed to provide a highly responsive and easily adaptable gaming experience with its Tactile Mechanical Keyboard while complimenting your setup with dual color keycaps. The Keyboard comes in the White & Black color to easily blend in with your aesthetic environment and complement your professional or gaming setup. The keyboard has a multi-colour backlight and 9 Built-In Lighting effects. Dimensions: 29.2 x 10.2 x 4 cm; 519 Grams
REMAX RM-C45 Mena Aroma Diffuser Portable Humidifier, Mini Diffuser for Car Home Office Bedroom with Smart Connectivity, Remote Control, Long-Lasting Fragrance and Mesmerizing Starlight Effect, Black About this item Dual Purpose Design: Perfectly suited for both car and home use, this aroma diffuser enhances any space with delightful fragrances, whether you’re on the road or relaxing at home. Starlight Effect: Create a mesmerizing ambiance with the starlight effect, projecting a soothing light pattern that complements your favorite scents for a relaxing experience. Smart Connectivity: Enjoy modern convenience with smart connectivity features that allow you to control the diffuser remotely, ensuring ease of use and customization from anywhere. Long-Lasting Fragrance: Formulated for extended scent release, this diffuser ensures that your environment remains fresh and inviting for hours on end, without the need for constant refills. User-Friendly Remote Control: The included remote control makes it easy to adjust settings and change fragrances without needing to reach the diffuser directly, providing ultimate convenience. Customizable Aromatherapy: Choose from a variety of essential oils or fragrances to create your desired atmosphere, whether you seek relaxation, invigoration, or a fresh ambiance. Compact and Stylish Design: The sleek and modern design fits seamlessly into any decor, enhancing your car’s interior or your home’s aesthetic without taking up too much space. Perfect Gift Idea: A thoughtful gift for friends or family who appreciate home fragrance and wellness, making it a great addition to any special occasion or celebration.
HP 83A Black Toner Cartridge | Works with HP LaserJet Pro M201, HP LaserJet Pro MFP M125, M127, M225 Series | CF283A
HT03XL L11119-855 Laptop Battery for HP Pavilion 14-CE 14-CF 14-DF 15-CS 15-DA 15-DB 15-DW 17-by 17-CA Series 15-CS0053CL 15-DW0033NR 15-DA0014DX L11421-542 L11421-2C2 HSTNN-UB7J HSTNN-DB8R HT03041XL About this item Compatible with: HP HT03XL Battery, for HP Pavilion 14-CE 14-CF 14-CK 14-cm 14-DF 14-MA 14Q-CS 14Q-CY 14S-CF 14S-CR 15-CS 15-CW 15-DA 15-DB 15G-DR 15T-DA 15T-DB 17-by 17-CA Series 14-CE0000 14-CE0020TX 14-CE0025TX 14-CE0027TU 14-CE0028TX 14-CE0029TX 14-CE0030TX 14-CE0034TX 14-CE1058WM 14-CE0068ST 14-CE1056WM 14-CE0064ST 14-CE0006DX 14-CF0000 14-CF0014DX 14-CF1015CL 14-CM0000 14-CM0020NR 14-CM0012NR 14Q-CS0000 14Q-CS0006TU 15-CR0000 15-CR0087CL 15-CR0052OD 15-CR0055OD 15-CR0037WM 15-CR0051CL 15-CR0091MS 15-CR0010NR Replacement Battery for HP Pavilion 15-CS0000 15-CS2010NR 15-CS025CL 15-CS2073CL 15-CS2079NR 15-CS1063CL 15-CS0072WM 15-CS0051WM 15-CS1065CL 15-CW0000 15-CW1063WM 15-DA0000 15-DA0066CL 15-DA0002DX 15-DA0079NR 15-DA1005DX 15-DA0032WM 15-DA0033WM 15-DA0073MS 15-DA0012DX 15-DA0071MS 15-DA0086OD 15-DB0000 15-DB0015DX 15-DB0031NR 15-DB0011DX 15-DB0066WM 15-DB0005DX 15-DB0048NR 15-DB0051OD 15-DB0048CA 17-BY0000 17-BY1053DX 17-BY1033DX 17-BY0060NR 17-BY0021DX 17-BY0053CL 17-BY0021CY 17-BY1055CL Laptop Compatible for HP Pavilion 240 G7, 245 G7, 250 G7, 255 G7, 340 G5, 348 G5 Series;P/N: HSTNN-DB8R HSTNN-DB8S HSTNN-IB80 HSTNN-IB8O HSTNN-LB8L HSTNN-LB8M HSTNN-UB7J HT03041XL HTO3XL HT03XL L11119-855 L11421-1C1 L11421-1C2 L11421-2C1 L11421-2C2 L11421 -2C3 L11421-2D1 L11421-2D2 L11421-421 L11421-422 L11421-423 L11421-542 L11421-544 L11421-545 TPN-C136 TPN-I130 TPN-I131 TPN-I132 TPN-I133 TPN-I134 TPN-Q207 TPN-Q208 TPN-Q209 TPN-Q210 Specifications: ht03xl battery for hp, Battery Type: Li-ion Voltage: 11.55V Capacity: 41.7WH 3470mAh;Cells: 3-cell; Color: Black Packages includes: l11119-855 hp battery, with Two Free Screwdrivers; HTO3XL Battery for hp model 15-cs0085cl 15-cs0073cl 15-cs3075cl 15-cs3073c 15t-cs300 15t-cs200 15-da0021cy 15-da0011la 15t-db000 14-cf0013dx 14-cf0051od 15-ef0023dx Compatible devices: HP HT03XL Rechargeable li-ion Battery, for HP Pavilion 14-CE 14-CF 14-CK 14-cm 14-DF 14-DH 14-MA 14Q-CS 14Q-CY 14S-CF 14S-CR 15-CS 15-CW 15-DA 15-DB 15G-DR 15T-DA 15T-DB 17-by 17-CA Series 15-cs0053cl 15-cs1063cl 15-cs2064st 15-cs3063cl 15-cs3075cl 15t-cs200 15-da0032wm 15-da0014dx 17-by0063cl 17-by2075cl 17-by0071cl 17-by1022cl 17-by0088cl 17-by0062st 17-by0020cy 17-by0017cy 17-by1003cy 17-ca1010ds 17-by0019ds 17-by2003ca 17-by3613dx 17-by1972cl 17-ca1031dx 17-ca1061nr 17-ca0054cl
Genuine-spec touchpad flex cable for MacBook Pro 15″ (Model A1706 – 2017 and A1989 – 2018/2019)—restores full Force Touch functionality, haptic feedback, and precise multi-touch gesture control during trackpad repair or replacement. Compatible With: MacBook Pro 15″ (2017) – Model A1706 (Model Identifier: MacBookPro14,3) MacBook Pro 15″ (2018–2019) – Model A1989 (Model Identifier: MacBookPro15,2) ✅ Note: Apple used the same trackpad assembly and flex cable across both A1706 and A1989 15″ models—making this part interchangeable between them. MacBook Pro 15″ (2017) – Model A1706 (Model Identifier: MacBookPro14,3) MacBook Pro 15″ (2018–2019) – Model A1989 (Model Identifier: MacBookPro15,2) ✅ Note: Apple used the same trackpad assembly and flex cable across both A1706 and A1989 15″ models—making this part interchangeable between them. ✅ Note: Apple used the same trackpad assembly and flex cable across both A1706 and A1989 15″ models—making this part interchangeable between them. Part Type: Touchpad flex cable only — does not include the trackpad housing, Taptic Engine, or mounting hardware. This is the OEM-style ribbon cable connecting 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 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.
lenovo battery L14M3P24 11.1V 45Wh 4050mAh L14M3P24 Battery COMPATIBLE L14S3P24 L14M3P24 L16M3P24 LAPTOP BATTERY FOR LENOVO IDEAPAD XIAOXIN 700 R720 Y700-14ISK Y520-15IKB Y720-14ISK SERIES 4 Cell Laptop Battery About this item Condition: New Voltage: 11.1V Capacity: 45Wh/4050mAh Replace Part Number: L14M3P24 L14S3P24 Fit For: Lenovo Ideapad 700 Ideapad 700 Series The Package Includes 1X L14M3P24 battery. Before purchasing, please open the laptop’s back cover to confirm the battery model and capacity. Raise the battery life: 1:After receiving the battery, Please charge it fully, then 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
