Genuine-spec UK layout keyboard replacement for MacBook Air 13″ (Model A2337, 2020)—featuring Apple’s Magic Keyboard with scissor-switch mechanism, backlighting, and full OEM compatibility for reliable, authentic typing experience. Compatible With: MacBook Air 13-inch (2020, Model A2337) – includes both Intel (Core i3/i5/i7) and Apple M1 chip variants. Layout: UK English (QWERTY) with £ symbol, taller vertical Enter key, and standard UK key labeling—matches Apple’s original regional configuration. Keyboard Type: Apple’s Magic Keyboard with scissor-switch mechanism—offering improved durability, quieter keystrokes, and 1mm key travel compared to older Butterfly designs. Integrated Features: Backlit keys for low-light environments, ambient light sensor support, and original-style ribbon cable connector for direct logic board connection. Build & Fit: Precision-engineered to align perfectly within the MacBook Air’s top case—ensures flush mounting and consistent key feel. Installation Note: The keyboard is factory-glued into the top case and requires full disassembly for replacement. Re-adhesion must be done carefully with proper adhesive. Recommended for experienced repair technicians.
A1989 Battery Replacement, A1964 Battery for MacBook Pro 13″ A1989 (Mid 2018 2019) A2251(2020 Release) EMC 3214 3358 3348 MR9Q2LL/A MR9R2LL/A MR9T2LL/A MR9U2LL/A MR9V2LL/A MV962LL/A MV9A2LL/A 【Specification】Voltage: 11.41V. Capacity: 58Wh/ 5086mAh. Battery Type: Li-ion. Condition: Brand new, from high quality materials, top circuit boards and smart chip. 【Compatible Part Number】A1964 A1989 A1989(EMC 3214) A1989(EMC 3358) A2251(EMC 3348) 020-02497 616-00419. 【Compatible Laptop Models】MacBook Pro 13-Inch model A1989 (Mid 2018, Mid 2019) , A2251(2020 Release), Order No MR9Q2LL/A MR9R2LL/A MR9T2LL/A MR9U2LL/A MR9V2LL/A MV962LL/A MV972LL/A MV982LL/A MV992LL/A MV9A2LL/A MWP72LL/A MWP82LL/A MWP42LL/A MWP52LL/A MWP62LL/A MR9Q2 MR9R2 MR9T2 MR9U2 MR9V2 MV962 MV972 MV982 MV992 MV9A2 MWP62. 【Note】The tools are included. Double-sided tape is attached to the back of the battery, but NO battery installation instruction. The MBP battery is difficult to disassemble, we suggest you search for related installation videos or find a technician for help.
REMAX RT-E601 1200MAH TIME II SERIES EYE-CARING LED LAMP Function— Use the power key to turn on/ off the lamp. Tap the power key to adjust the brightness of the lamp (brightest-normal-dimmest-off) four steps are easy to use. When folding the design lamp holder and arm can rotate the angle within a range of 180 degrees up-down adjustment. Press and hold “Mode” Set” Up” Donkey enter normal time mode, alarm clock and snooze mode, birthday reminder mode timer mode, and temperature mode. Time changes 12 hours/24 hours mode and adjusting the hours, minutes, year, month,t,h, and day. Temperature can change to Celsius or Fahrenheit. The red light will be on when it starts charging, and the red light will go out when it is fully charged. Material—ABS+PC Rated voltage—DC5V /0.5A lighting Mode—Direct glow Key Type—Touch key Luminous flux—250m Color rendering index—>80 Rated power—4W Battery Capacity—1200mAh Weight—346g Charging port—Micro SIZE—87*87*263mmCharging time—4-4:30hour Working time—3:30hour
The Meetion Mini 4000 Black is a compact wireless keyboard and mouse combo designed for clean and convenient everyday use. With a mini-space-saving layout and stable wireless connection, it’s perfect for office work, home setups, and laptop users who want a neat, clutter-free desk. The Meetion Mini 4000 is a stylish and practical wireless keyboard and mouse set made for users who prefer a compact and modern workspace. Its mini keyboard design saves desk space while still offering comfortable typing for daily tasks. The wireless mouse provides smooth control and easy navigation, making this combo ideal for offices, students, and home users. With plug-and-play wireless connectivity, setup is simple—just connect the receiver and start using it instantly. Wireless Keyboard & Mouse Combo for a clean and clutter-free setup Compact Mini Keyboard Design saves space and fits small desks easily Stable Wireless Connection for smooth performance Plug & Play Receiver – quick setup without drivers Smooth Wireless Mouse for accurate control Comfortable Typing Layout for everyday productivity Modern Black Finish suitable for any workspace Ideal for Laptops & Desktops Perfect for office workers, students, and home users needing a compact wireless combo for laptops or desktops. Works with most devices that support USB.
WiWU Durable USB C to Type C PD 60W Fast Charging Cable for Mobile Phone Laptop Tablet
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)
Genuine-spec Touch Bar assembly with integrated flex cable for 2020 MacBook Pro 13″ models (A2251, A2289, A2338)—restores full Touch ID and Touch Bar functionality with OEM-level fit and performance. Compatible With: MacBook Pro 13″ (2020): A2251 (Intel Core i5/i7, two Thunderbolt ports) A2289 (Intel Core i5/i7, four Thunderbolt ports) A2338 (Apple M1 chip, two Thunderbolt ports) MacBook Pro 13″ (2020): A2251 (Intel Core i5/i7, two Thunderbolt ports) A2289 (Intel Core i5/i7, four Thunderbolt ports) A2338 (Apple M1 chip, two Thunderbolt ports) A2251 (Intel Core i5/i7, two Thunderbolt ports) A2289 (Intel Core i5/i7, four Thunderbolt ports) A2338 (Apple M1 chip, two Thunderbolt ports) Includes: Complete Touch Bar module with integrated flex cable, Touch ID sensor, and ambient light sensor—ready for direct connection to the logic board. Functionality: Fully restores dynamic Touch Bar controls, system functions, app shortcuts, and Touch ID (fingerprint authentication and power button). OEM-Quality Build: Matches Apple’s original design in responsiveness, finish, and sensor alignment—ensures seamless integration with macOS. Color Options: Available in Space Gray and Silver to match your MacBook’s top case (confirm your model’s color before ordering). Installation Note: Requires full top case disassembly and careful handling of adhesive and connectors. The flex cable routes under the speakers and connects near the logic board—precision is essential. Recommended for experienced technicians.
Genuine Apple MagSafe 3 charging cable (2-meter length), originally shipped with MacBook Pro 14"/16" (2021, M1 Pro/Max) and MacBook Pro 16" (2023, M2/M3 Max). Used but fully functional, tested for safe power delivery and data handshake with Apple laptops. Compatibility: MacBook Pro 14″ (2021–2023, M1 Pro/Max, M2 Pro/Max, M3 Pro/Max) MacBook Pro 16″ (2021–2023, M1 Max, M2 Max, M3 Max) Works with Apple 67W, 96W, and 140W USB-C Power Adapters (sold separately) MacBook Pro 14″ (2021–2023, M1 Pro/Max, M2 Pro/Max, M3 Pro/Max) MacBook Pro 16″ (2021–2023, M1 Max, M2 Max, M3 Max) Works with Apple 67W, 96W, and 140W USB-C Power Adapters (sold separately) Connector Type: MagSafe 3 (magnetic, tri-oval tip) on laptop end USB-C on power adapter end MagSafe 3 (magnetic, tri-oval tip) on laptop end USB-C on power adapter end Cable Length: 2 meters (≈6.6 feet) – longer than the standard 1.8m cable, ideal for flexible desk or bedside setups. Condition: Original Apple cable, previously used but fully tested: No fraying, kinks, or exposed wires MagSafe 3 connector intact with strong magnetic hold Charges MacBook at full rated speed (supports up to 140W with compatible adapter) Passes Apple’s authentication handshake (no “Not Supported” warnings) No fraying, kinks, or exposed wires MagSafe 3 connector intact with strong magnetic hold Charges MacBook at full rated speed (supports up to 140W with compatible adapter) Passes Apple’s authentication handshake (no “Not Supported” warnings) What’s Included: MagSafe 3 to USB-C cable only Power adapter NOT included MagSafe 3 to USB-C cable only Power adapter NOT included Why Choose This: Cost-effective alternative to buying new 100% genuine Apple—no third-party risks (overheating, slow charging, compatibility errors) Ideal for backup, travel, or replacing a damaged original cable Cost-effective alternative to buying new 100% genuine Apple—no third-party risks (overheating, slow charging, compatibility errors) Ideal for backup, travel, or replacing a damaged original cable
SanDisk 2TB Portable SSD - Up to 800MB/s, USB-C, USB 3.2 Gen 2, Updated Firmware - External Solid State Drive - SDSSDE30-2T00-G26 SanDisk 2TB Portable SSD – Up to 800MB/s, USB-C, USB 3.2 Gen 2, Updated Firmware – External Solid State Drive – SDSSDE30-2T00-G26 About this item Solid state performance with up to 800MB/s read speeds in a portable drive. (Based on internal testing; performance may be lower depending on host device, interface, usage conditions and other factors. 1MB=1,000,000 bytes.) Back up your content and memories on a storage solution that fits seamlessly into your mobile lifestyle. Take it with you on your adventures—up to two-meter drop protection means this durable drive can take a beating. (Based on internal testing.) Secure it to your belt loop or backpack for extra peace of mind thanks to the tough rubber hook. From SanDisk, a brand professional photographers trust to take on assignments.
Replacement cable for MacBook Pro A2794, designed to restore proper connection and functionality for damaged or faulty internal cables. Ideal for technicians and repair shops, ensuring reliable performance and correct fit for A2794 models. Type: USB-C to USB-C charging/data cable Model: A2794 Length: 2 meters (≈ 6.6 ft) Color: White Design: Woven braided cable for durability Connectors: USB-C (Male) on both ends Power Delivery: Supports up to 240 W high-power charging when used with a compatible USB-C PD adapter Data Transfer: USB 2.0 transfer speeds Designed for fast charging and syncing between USB-C devices
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.
Keyboard Compatible for MacBook PRO Retina 15″ A1398 (Late 2013-MID 2015) US Layout Compatibility: MacBook Pro Retina 15″ A1398 Late 2013 (IG): ME293LL/A (2.0 Core i7) Late 2013 (IG): ME293LL/A (2.3 Core i7) Late 2013 (IG): ME293LL/A (2.6 Core i7) Mid 2014 (IG): MGXA2LL/A (2.2 Core i7) Mid 2014 (IG): MGXA2LL/A (2.5 Core i7) Mid 2014 (IG): MGXA2LL/A (2.8 Core i7) Late 2013 (DG): ME294LL/A (2.3 Core i7) Late 2013 (DG): ME294LL/A (2.6 Core i7) Compatibility: Mid 2014 (DG): MGXC2LL/A (2.5 Core i7) Mid 2014 (DG): MGXC2LL/A (2.8 Core i7) Mid 2015 (IG): MJLQ2LL/A (2.2 GHz Core i7) Mid 2015 (IG): MJLQ2LL/A BTO (2.5 GHz Core i7) Mid 2015 (IG): MJLQ2LL/A BTO (2.8 GHz Core i7) Mid 2015 (DG): MJLT2LL/A (2.5 GHz Core i7) Mid 2015 (DG): MJLT2LL/A BTO (2.8 GHz Core i7) Identifying Numbers APN: 661-6532, 661-8311,661-02536 Specification】The keyboard is without frame! pls see detail compatible model in descrirption. Safe】Easy for you replace your faulty,cracked or broken keyboard ,seller remind that you should replace the keyboard in the off state. All pictures are taken from the real item, please check carefully before biddingReplacement and high quality,Replace your faulty, cracked or broken keyboard Replacement and high quality,Replace your faulty, cracked or broken keyboard Each keyboard is tested before shipping Please contact us if you have any question or problems.
Smooth, precise, and completely wireless. The Apple Magic Trackpad brings the best laptop navigation to your desktop. Available in both White and Black, it features a large glass surface, Force Touch technology for deeper control, and a modern USB-C port for easy charging. It connects instantly to your Mac or iPad and keeps running for a month or more on a single charge. Make navigating your computer effortless with the Apple Magic Trackpad (A3120). Designed with a wide, smooth glass surface, it lets you swipe, scroll, and zoom using the same natural hand gestures you use on a laptop. It is the perfect tool to keep your desk clean and your workflow productive. Key Features: Force Touch: Built-in sensors know how hard you press, letting you click deeper to open previews, look up definitions, and reveal hidden menus. Large Glass Surface: The spacious edge-to-edge design gives you plenty of room to scroll through large documents or edit photos comfortably. Updated with USB-C: Now features a universal USB-C port for charging and pairing, matching all your modern cables. Long Battery Life: The built-in rechargeable battery lasts about a month or more before needing a quick recharge. Easy Setup: Pairs automatically with your Mac via Bluetooth right out of the box, with no complicated configuration needed. Sleek Colors: Choose between classic White or premium Black to perfectly match your desktop setup. Specifications at a Glance: Model: A3120 Colors: White / Black Connection: Wireless / Bluetooth / USB-C Surface: Premium Edge-to-Edge Glass Compatibility: Mac and iPad
The HyperX Pulsefire Haste 2 Core Wireless is an ultra-lightweight, high-performance gaming mouse designed for speed, precision, and long-lasting comfort. Featuring dual-mode wireless connectivity and an operating weight of just 70 grams, it delivers low-latency competitive gaming powered by a single AAA battery. ✅ Full Specifications: Model: HyperX Pulsefire Haste 2 Core Wireless (White Edition / 8R2E7AA) Interface / Connection: Dual Wireless Connection Modes: High-speed 2.4GHz Wireless (via included USB-A nano receiver) Bluetooth 5.2 (Power-efficient mode for casual use and multi-device pairing) Interface / Connection: Dual Wireless Connection Modes: High-speed 2.4GHz Wireless (via included USB-A nano receiver) Bluetooth 5.2 (Power-efficient mode for casual use and multi-device pairing) Performance & Sensor: Sensor Type: HyperX Custom Core Optical Sensor Max Resolution: Up to 12,000 DPI DPI Presets: 400 / 800 / 1600 / 3200 DPI Tracking Speed: 300 IPS Acceleration: 35G Polling Rate: Up to 1,000Hz (1ms response time) Performance & Sensor: Sensor Type: HyperX Custom Core Optical Sensor Max Resolution: Up to 12,000 DPI DPI Presets: 400 / 800 / 1600 / 3200 DPI Tracking Speed: 300 IPS Acceleration: 35G Polling Rate: Up to 1,000Hz (1ms response time) Switches & Durability: Main Left/Right Switches: Tactile TTC Gold Switches Switch Lifespan: Rated for up to 20 million clicks Total Buttons: 6 programmable buttons (including 2 thumb side buttons) Switches & Durability: Main Left/Right Switches: Tactile TTC Gold Switches Switch Lifespan: Rated for up to 20 million clicks Total Buttons: 6 programmable buttons (including 2 thumb side buttons) Material & Build: Durable solid-upper shell with low-friction PTFE skates for seamless gliding across cloth mouse pads Design & Form Factor: Lightweight, symmetrical ergonomic frame suitable for various grip styles (palm, claw, fingertip) Lighting Effects: Customizable onboard LED RGB lighting Battery & Power: Battery Type: User-replaceable, 1x AAA Alkaline Battery Battery Life: Up to 100 hours (on 2.4GHz mode) or up to 200 hours (on Bluetooth mode) Battery & Power: Battery Type: User-replaceable, 1x AAA Alkaline Battery Battery Life: Up to 100 hours (on 2.4GHz mode) or up to 200 hours (on Bluetooth mode) Security & Software: Fully compatible with HyperX NGENUITY software for button remapping, macro recording, and custom RGB profile management Compatibility: PC, Xbox Series X|S, Xbox One, PlayStation 5 (PS5), PlayStation 4 (PS4), and Mac Dimensions: Approx. 124.3 x 66.8 x 38.2 mm Weight: Mouse Only: Approx. 60 grams Operating Weight (with AAA battery): Approx. 70 grams Weight: Mouse Only: Approx. 60 grams Operating Weight (with AAA battery): Approx. 70 grams
TPLINK 300Mbps Wireless N ADSL2+ Modem Router TD-W8961N
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.
Genuine-spec US layout (QWERTY) keyboard replacement in Midnight Blue for MacBook Air 13.6″ (Model A2681, M2, 2022)—featuring Apple’s Magic Keyboard with scissor-switch mechanism, backlighting, and precise OEM fit. Compatible With: MacBook Air 13.6-inch (2022, Model A2681) with Apple M2 chip – specifically designed for the Midnight color variant. Layout: Standard US English (QWERTY) with wide Enter key, inverted-T arrow keys, and full function row—matches Apple’s original US configuration. Design: Apple’s Magic Keyboard with scissor-switch mechanism—offering quiet, stable keystrokes, 1mm key travel, and enhanced durability over older Butterfly designs. Color: Midnight Blue keycaps—specially matched to the Midnight finish of the A2681 MacBook Air for seamless visual integration. (Note: This keyboard is not recommended for Silver, Space Gray, or Starlight models due to color mismatch.) Features: Integrated backlighting, ambient light sensor compatibility, and OEM-style flex cable connector for direct logic board connection. Precision Fit: Engineered to exact Apple specifications for alignment, key spacing, and mounting—ensures a flush, secure fit within the original top case. Installation Note: The keyboard is factory-glued into the top case. Replacement requires full disassembly and professional-grade re-adhesion. Recommended for experienced technicians only.
This replacement touchpad for MacBook Air A2179 comes in Rose Gold and is sold without the flex cable. Perfect for restoring smooth trackpad performance, it’s ideal for repair technicians and users replacing a damaged or non-working touchpad. The MacBook Air A2179 Touchpad (Rose Gold) is a high-quality replacement part designed to restore full trackpad functionality to your laptop. Whether your original touchpad is unresponsive, physically damaged, or experiencing tracking issues, this replacement provides a reliable solution. Please note that this unit is without the flex cable, meaning it requires the original flex or a separate replacement flex for installation. Ideal for repair shops and technicians, it ensures smooth navigation and precise control. Compatible with MacBook Air A2179 Rose Gold Color Match for original look and finish Replacement Touchpad Only (without flex cable) Restores Smooth Trackpad Functionality Precision Tracking & Gesture Support (when installed correctly) Ideal for Repairs & Replacements High-Quality Build designed for durability and long use Designed specifically for Apple MacBook Air A2179 models. Recommended for technicians and repair shops or users replacing a faulty touchpad. Ensure compatibility before purchase and note that a flex cable is required for installation.
Apple Magic Mouse: Wireless, Bluetooth, Rechargeable. Works with Mac or iPad; Multi-Touch Surface - White (Pre-Owned) Apple Magic Mouse: Wireless, Bluetooth, Rechargeable. Works with Mac or iPad; Multi-Touch Surface – White (Pre-Owned) About this item WIRELESS, RECHARGEABLE CONVENIENCE — Magic Mouse connects wirelessly to your device via Bluetooth. And the rechargeable internal battery means no loose batteries to replace. WORKS WITH MAC OR IPAD — It’s ready to go right out of the box and pairs quickly with your Mac or iPad so you can get to work right away. SWIPE AND SCROLL ON THE MULTI-TOUCH SURFACE — The Multi-Touch surface allows you to perform simple gestures such as swiping and scrolling. And an optimized foot design lets Magic Mouse glide smoothly across your desk. GO WEEKS WITHOUT CHARGING — The incredibly long-lasting internal battery will power your Magic Mouse for about a month or more between charges. Comes with a woven USB-C to Lightning Cable that lets you pair and charge by connecting to a USB-C port on your Mac or iPad. SYSTEM REQUIREMENTS — Requires a Bluetooth-enabled Mac with OS X 10.11 or later or an iPad with iPadOS 13.4 or later.
A1953 A1990 Battery Replacement for MacBook Pro 15″ Mid 2018 2019 EMC 3215 EMC 3359 Touch Bar MV902LL/A MV912LL/A MV922LL/A MV932LL/A MV942LL/A MV952LL/A MV962LL/A MV972LL/A MV902B/A MR962LL/A 【Specification】Voltage: 11.4V. Capacity: 83.6Wh 7336mAh. Battery Type: Li-ion. Condition:100% New from Manufacturer. Condition: Brand new, from high quality materials, top circuit boards and smart chip. 【Compatible Part Number】A1953 A1990 (EMC 3215) A1990 (EMC 3359) 020-02391 820-01095 080-333-400 2217-2548 MacBookPro15,1 MacBookPro15,3. 【Compatible Laptop Models】Battery replacement for MacBook Pro (15-inch, Model A1990, Mid 2018, Mid 2019) : MR962LL/A, MR972LL/A, MR932LL/A, MR942LL/A, MV922LL/A, MV932LL/A, MV902LL/A, MV912LL/A, MV942LL/A, MV952LL/A, MV962LL/A, MV972LL/A, MR952LL/A, MV902xx/A, MV912, MV922, MV932, MV942, MV952, MR932, MR942, MR952, MR962, MR972, MUQH2. 【ANTIEE Promise】Everyone of our replacement batteries has tested with strict quality control standards to ensure the true capacity, stable current and low self-discharge. All ANTIEE batteries are UL / CE / FCC / RoHS Certified for safety, we are confident in the performance of the replacement battery.