CS03XL Battery for HP Elitebook 745 755 840 848 850 G3 G4, ZBook 15u G3 G4 Laptop, P/N: HSTNN-UB6S HSTNN-IB6Y 800231-141 800513-001 800231-1C1 CS03046XL About this item Battery type: Li-ion ‖ Capacity: 46Wh ‖ Voltage: 11.4V Replacement Battery for HP Elitebook 745 G4 G3, Elitebook 755 G4 G3, Elitebook 840 G4 G3, Elitebook 848 G4 G3, Elitebook 850 G4 G3, ZBook 15u G4 G3 Mobile Workstation. Compatible P/N: 800231-141, 800513-001, CS03XL, CS03, HSTNN-UB6S, HSTNN-IB6Y, HSTNN-I33C-4, HSTNN-I33C-5, HSTNN-I41C-4, HSTNN-I41C-5. Built-in circuit protection ensures both safety and stability. Overcharger and Discharger Circuit Protection.
The 45W MagSafe 2 Power Adapter features a magnetic DC connector so if someone should trip over it, the cord disconnects harmlessly and your MacBook Air stays put safely. It also 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. The 45W MagSafe 2 Power Adapter features a magnetic DC connector so if someone should trip over it, the cord disconnects harmlessly and your MacBook Air stays put safely. It also 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 lights up; an amber light lets you know that your notebook is charging, while a green light tells you that you have a full charge. An AC cord is provided with the adapter for maximum cord length, while the AC wall adapter (also provided) gives you an even easier and more compact way to travel. Designed to be the perfect traveling companion, the adapter has a clever design which 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 only with MacBook Air featuring MagSafe 2 power port. 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. Mac Models MacBook Air (13-inch, Early 2015 – 2017) MacBook Air (11-inch, Early 2015)
Apple USB-C to Lightning Cable (1m) - With Apple Warranty Apple USB-C to Lightning Cable (1m) – With Apple Warranty Connect your iPhone, iPad or iPod with Lightning connector to your USB-C– or Thunderbolt 3 (USB-C)–enabled Mac for syncing and charging, or to your USB-C–enabled iPad for charging. You can also use this cable with your Apple 18W, 20W, 29W, 30W, 61W, 87W or 96W USB‑C Power Adapter to charge your iOS device and even take advantage of the fast-charging feature on selected iPhone and iPad models.
Specification Details Specification Details Input/Output Other Sound Mode Standard Mode Category Speakers Use Home Tweeter Type Cone Control Volume Control, Playback Bluetooth Version 5.0 Input Power (W) <25 W Active Noise Cancellation Passive Voice Control No Output Power Other Waterproof Yes Support APP No Support Memory Card Yes Material Plastic Playback Function MP3, FLAC, ALAC Remote Control No Support Apt-X No Intelligent Personal Assistant Apple’s Siri Display Screen No Built-in Microphone Yes Audio Crossover Full-Range Number of Loudspeaker Enclosure 1 Power Source DC, Battery, USB PMPO 40 W Channels 2 (2.0) Feature Phone Function, Play Video Battery Yes Communication Bluetooth, Audio Line Speaker Type Portable Cabinet Material Plastic Brand Name Bigmzpai Origin Mainland China Bluetooth Version V5.0 Waterproof Level IPX6 Battery Capacity Power Battery 10000mAh Brand YIBOLANG
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
240W USB-C Original Charge Cable (2m) (Second Hand) This 2-meter charge cable—with USB-C connectors on both ends—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 wall outlet and take advantage of fast-charging capabilities. USB-C Power Adapters sold separately. 240W USB-C Original Charge Cable (2m) (Second Hand) This 2-meter charge cable—with USB-C connectors on both ends—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 wall outlet and take advantage of fast-charging capabilities. USB-C Power Adapters sold separately. This 2-metre charging 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. It supports charging of up to 240 watts and transfers data at USB 2 rates. 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.
New A1989 A1990 Keyboard US Standard Replacement for MacBook Pro 13'' 15''A1990 A1989 Keyboard 2018/2019 Year New A1989 A1990 Keyboard US Standard Replacement for MacBook Pro 13” 15”A1990 A1989 Keyboard 2018/2019 Year New A1989 A1990 Keyboard US Standard Replacement for MacBook Pro 13” 15”A1990 A1989 Keyboard 2018/2019 Year We have Perfect after-sales services We share the latest information on laptop spare parts For all our customers. This is NOT an easy job for someone who has no technical skills with Disassembling or Assembling a laptop, So only purchase this item if you know how to install it. Each Keyboard is tested before shipping and working.
Logic Board 2.2GHz i7 Integrated Graphics, 16GB Replacement for Apple MacBook Pro 15" Retina A1398 (Mid 2015) Logic Board 2.2GHz i7 Integrated Graphics, 16GB Replacement for Apple MacBook Pro 15″ Retina A1398 (Mid 2015)
A reliable, budget-friendly Genius KM-100SE wired keyboard and mouse combo featuring a spill-resistant keyboard, ergonomic design, and plug-and-play USB connectivity—ideal for home, office, or classroom use. Spill-resistant design with drainage holes to protect against accidental liquid damage Quiet, low-profile keys with standard layout (including numeric keypad) for comfortable typing Durable construction with a lifespan of up to 10 million keystrokes Integrated wrist rest for improved ergonomics during long sessions Ambidextrous 3-button design with scroll wheel 1000 DPI optical sensor for smooth, precise tracking on most surfaces Ergonomic shape for comfortable right- or left-handed use Plug-and-play USB connection—no drivers required Compatible with Windows, macOS, Linux, and ChromeOS 1.5-meter braided cable for tangle resistance and durability
Used OEM Original Apple Logic Board Working, A1706 Late 2017 Mode 3.3 GHz i7 256gb 16gb RAM Tested using latest industry hardware diagnostic software, Fresh pull from full unit.
90W Adapter Laptop Charger for Toshiba Satellite L305 L305D L455 L505 L505D L635 L645 L655 L655D L745 L755 L775 L855 L875 A105 A135 C655 C675 C850 C855; PA3714U-1ACA PA5035U-1ACA Power Cord
Xiaomi TV Box S (2nd Gen) 4K Ultra HD Streaming Media Player, Google TV Box with 2GB RAM 8GB ROM, 2.4G/5G Dual WiFi, Bluetooth 5.2 & Dolby Atmos & DTS-HD, Dolby Vision, HDR10+ About this item 4K Ultra HD Image Quality: 4K Ultra HD realizes a more detailed and vivid image for you to immerse yourself in. Dolby Vision & HDR10+: A crisper image in any lighting condition. With Dolby Vision and HDR10+, images now feature a higher dynamic range, and have more amazing brightness, contrast and color than before. HDR images also have more detailed shadows and highlights. Dolby Atmos & DTS-HD: Extraordinary audio experience. As revolutionary spatial audio technology, Dolby Atmos brings the ultimate cinema experience into your living room by surrounding you with powerful sound effects, and also, DTS-HD delivers extraordinarily high-quality sound. Powerful Processor: Accelerated experience: The quad-core CPU delivers efficient performance. With high-performance GPU, the TV can now become your new entertainment platform. The 2GB RAM + 8GB ROM combo offers a smoother viewing experience. Google TV: Entertainment you love, with a little help from Google. Google TV brings together movies, shows, and more from across your apps and subscriptions and organizes them just for you. Discover new things to watch with recommendations based on what you watch and what interests you, from across your subscriptions and content available to you. Ok Google: Your TV is more helpful than ever. Ask Google to find movies, stream apps, play music, and control the TV – all with your voice. Even get answers, control smart home devices, and more. Just say “Ok Google” or press the Google Assistant button on the remote to get started. 360° Bluetooth & IR Remote Control: The intuitive button layout and Bluetooth allows you to access your favorite content much quicker from any angle. With the built-in IR, you can also control power and volume on your TV or soundbar, all with a single remote. Wireless Projection: Upgraded viewing angle. Chromecast Built-in makes it easier to project content from smart devices onto the TV, which allows for a wider viewing angle. Mainstream Ports: Enable more possibilities. Abundant options of mainstream ports that allow easy expansion without restrictions. Get up and running in 3 simple steps: 1. Attach Xiaomi TV Box S (2nd Gen) to your TV HDMI port. 2. Connect to the Internet. 3. Start streaming. (Xaomi Quality Trustworthy. “TechFuture US” Store provides 13 months warranty for this product(ASIN: B0BZC43HX8).) Show less
Logitech MK120 Wired USB Keyboard Mouse Desktop Combo Height: 6.10 in (155 mm) Width: 17.72 in (450 mm) Depth: 0.93 in (23.5 mm) Weight: 19.4 oz (550 g) Cable length: 4.9 ft (150 cm) Height: 4.45 in (113 mm) Width: 2.44 in (62 mm) Depth: 1.50 in (38 mm) Weight: 3.17 oz (90 g) Cable length: 70.87 in (180 cm) Spill-resistant design 1Tested under limited conditions (maximum of 60 ml liquid spillage). Do not immerse the keyboard in liquid. Adjustable keyboard height 10-Key Number pad Caps lock indicator light Num lock indicator light Up to 10 million keystrokes (excludes number lock key) Key type: Deep profile Sensor Technology: Optical tracking Number of Buttons: 3 (Left/Right-click, Middle click) Scrolling: line-by-line Scroll Wheel: Yes, optical Mouse plastics: 72% post-consumer recycled material 2Excludes plastic in cable assembly, printed wiring assembly (PWA) and packaging. Keyboard plastics: 54% post-consumer recycled material 3Excludes plastic in cable assembly, printed wiring assembly (PWA) and packaging. Windows® 10,11 or later Two available USB ports
Brand Crucial Computer Memory Size 8 GB RAM Memory Technology DDR4 Memory Speed 2666 MHz Compatible Devices Laptop, PC Improve your system's responsiveness, run apps faster and multitask with ease Install with ease; no computer skills required How-to guides available at Crucial Compatibility assurance when using the Crucial System Scanner or Crucial Advisor Tool Micron quality and reliability is backed by superior component and module level testing and 42 years of memory expertise ECC Type = Non-ECC, Form Factor = SODIMM, Pin Count = 260-pin, PC Speed = PC4-21300, Voltage = 1.2V, Rank and Configuration = 1Rx16, 1Rx8 or 2Rx8 Brand Crucial Computer Memory Size 8 GB RAM Memory Technology DDR4 Memory Speed 2666 MHz Compatible Devices Laptop, PC Improve your system’s responsiveness, run apps faster and multitask with ease Install with ease; no computer skills required How-to guides available at Crucial Compatibility assurance when using the Crucial System Scanner or Crucial Advisor Tool Micron quality and reliability is backed by superior component and module level testing and 42 years of memory expertise ECC Type = Non-ECC, Form Factor = SODIMM, Pin Count = 260-pin, PC Speed = PC4-21300, Voltage = 1.2V, Rank and Configuration = 1Rx16, 1Rx8 or 2Rx8
WiWU Linker 721HD Hub – Compact USB-C hub with 7 ports including 100W PD, dual USB-A, USB-C data, HDMI 4K60, and dual SD/TF slots.Aluminum body, plug‑and‑play compatibility with MacBooks and modern USB‑C devices—ideal for laptop expansion. Model: Linker 721HD (WiWU) Material: Aluminum-alloy shell Ports: 2 × USB‑A 3.1 1 × USB‑C 3.1 (data) 1 × USB‑C PD power delivery (up to 100 W) 1 × HDMI (4K @ 60 Hz) SD card slot + micro‑SD (TF) slot (USB 3.0 speed) Ports: 2 × USB‑A 3.1 1 × USB‑C 3.1 (data) 1 × USB‑C PD power delivery (up to 100 W) 1 × HDMI (4K @ 60 Hz) SD card slot + micro‑SD (TF) slot (USB 3.0 speed) Cable: Fixed USB‑C male cable (approx. 15 cm) Compatibility: Plug-and-play with USB-C/Thunderbolt 3/4 devices (MacBook, XPS, Chromebooks, mobile devices with DP-Alt Mode) Design: Compact, space gray finish optimized for travel/work setups Weight: ~150 g
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.
Genuine-spec touchpad flex cable for MacBook Air 13″ (Model A1534, Early 2015)—essential for restoring full trackpad functionality, including precise cursor control and physical click response, during repair or replacement. Compatible With: MacBook Air 13-inch (Early 2015, Model A1534, Model Identifier MacBookAir7,2). Part Type: Touchpad flex cable only—does not include the trackpad housing, button mechanism, or mounting brackets. This is the ribbon cable that connects the trackpad to the logic board. Function: Carries input signals from the trackpad to the logic board—critical for cursor movement, tap-to-click, and primary/secondary physical click functionality. (Note: This model uses a physical click mechanism, not Force Touch—so no haptic feedback or pressure-sensing.) OEM-Quality Construction: Matches Apple’s original cable in length, connector type, and shielding—ensures reliable signal transmission and long-term durability. Common Use Cases: Replacing a torn, frayed, or damaged original flex cable Completing a trackpad replacement when the original cable is compromised Fixing erratic cursor movement, unresponsive trackpad, or loss of click function Replacing a torn, frayed, or damaged original flex cable Completing a trackpad replacement when the original cable is compromised Fixing erratic cursor movement, unresponsive trackpad, or loss of click function Installation Note: Requires bottom case removal and careful disconnect/reconnect of the ZIF (Zero Insertion Force) connector on the logic board. The cable routes under the battery—handle with care. Suitable for intermediate to advanced DIYers or technicians.
Genuine Apple MacBook Pro 16″ (A2141) Retina display assembly—professionally removed from original units and tested for full functionality. Ideal for high-quality repairs with true OEM performance and clarity. Model Compatibility: Fits MacBook Pro 16-inch (2019 model, A2141) only. 100% Original Apple Display: Not a copy or aftermarket part—this is an authentic Apple Retina display assembly carefully pulled from used or refurbished MacBook Pro units. Stunning Retina Display: 16-inch LED-backlit screen with 3072 x 1920 resolution, P3 wide color, True Tone technology, and high brightness for crisp, lifelike visuals. Complete Assembly Included: Comes with front glass, LCD panel, integrated 720p FaceTime HD camera, ambient light sensor, and full bezel—ready for installation. Rigorously Inspected: Each unit is tested for dead pixels, backlight uniformity, color accuracy, and physical condition to ensure reliable performance. “Pulled” Condition: Removed from a genuine MacBook Pro—fully functional with OEM quality, but shows signs of prior use (no cracks or major blemishes). Perfect for Professional Repairs: Trusted by technicians and refurbishers who demand factory-level display quality and compatibility.
Upgrade your workspace with a massive 27-inch Full HD canvas. Combining a high-speed 100Hz refresh rate with a stunning frameless IPS display, the B27M1 delivers an expansive, fluid viewing experience for professionals and creators alike. Model: Buerotika B27M1 Primary Specs: 27-inch Wide-Screen Display Display/Performance: IPS (In-Plane Switching) for 178° ultra-wide viewing angles Visual/Build Quality: 1920 x 1080 (Full HD) with vibrant color reproduction Aesthetic: 3-sided frameless “infinity” design for a sleek, modern desk setup Build: Lightweight, ultra-slim chassis with a space-saving minimalist stand Adjustability: Ergonomic tilt adjustment to match your eye level Input/Output: HDMI (High-Speed) and VGA ports Compatibility: Fully compatible with desktop PCs, laptops, and gaming consoles Smooth Motion: 100Hz Refresh Rate – 66% faster than standard monitors for reduced motion blur and lag. Eye Care: Integrated Flicker-Free technology and Low Blue Light filters for comfortable all-day use. Panel Quality: IPS technology ensures colors stay accurate even when viewed from the side. Enhanced Productivity: Large 27-inch screen allows for comfortable side-by-side window multitasking. Home Entertainment: Great for streaming and movies where a larger screen provides more impact. Education & Research: Easy-to-read text and large display area for students and writers. Casual Gaming: The 100Hz boost provides a competitive edge in smoothness over 60Hz displays.
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
