Electronics

Find Electronics from the best B2B online marketplace. Find a reliable Electronics supplier, vendor, manufacturer or distributor to get free quote on HKTDC Sourcing.

Electronics Suppliers and Manufacturers

Consumer Electronics

elec

Find Consumer Electronics from the best B2B online marketplace. Find a reliable Consumer Electronics supplier, vendor, manufacturer or distributor to get free quote on HKTDC Sourcing.

Consumer Electronics Suppliers and Manufacturers

MGM Industries & Company

3G GSM GPS SIM WIFI for Android and IOS Heart Rate Pedometer Monitor Bluetooth&nbsp; Leather Band Smart Watch 	 【3G and WIFI Connection Supported】Android 5.1 OS, it with thousands of apps at the Google Play store. This smart watch support 3G WCDMA850/2100 frequency band, and 2G GSM850/900/1800/1900 frequency band. The word is on your hand, easy communication makes people closer. You have the best way to experience the net work. This is also support WIFI connection. Just like you android smart phone. 	 【Compact and Fashionable Design】2017 New design smart watch with fashionable and compact watch face and high quality leather band, it makes your wrist comfortable. It is quiet suitable for business man. 	 【GPS Navigation】Your smart navigation assistant, this smartwatche can support Google map with high accurate GPS components. So you can know the location of nearby hotel , restaurant, hospital, school anywhere you want to know easily. Voice navigation is available. 	 【Smart Health and Message Assistant】This smart watch can automatically record your daily steps and consuming calories. It can also help you to know your heart rate anytime and anywhere. Keep you healthy all the time. Smartwatches can support information pushing. After you connect the phone and watch by Bluetooth, you will never miss your incoming calls, SMS, Facebook, Whatsapp, emails, Twitter and other APPS notifications. Go your smart life now! 	 【World Famous Guarantee and Packing List】Our product has high quality, we have CE, Rohs and MSDS professional certifications. If there is anything, please feel free to contact us. We will provide easy to touch service. Packing list: 1x smart watch; 1x user manual; 1x charging cable; 1x packing box.  

Pedometer Bluetooth Leather Band Smart Watch

Microtech Technology Co Ltd

   The front panel aluminum magnesium alloy powder processing.   Housing plating zinc strong oxidation corrosion resistant properties.   Installation: 8.4 inch upside-down.   I/O interface: VGA 12V DC power input COM/USB(only touch screen version).   Housing color: industrial black(black sand grain).   Total weight: 1.5kg.   TP type: 5 wire resistive touch panel.   Operating pressure: 30-45g strength electronic shock&lt;10ms.   Click lifetime: 250g strength 10 million times.   Relative illuminance: &gt;81% outline dimension: 264mm x 165mm x 40mm.   Communication interface: RS232 serial/USB.   Power: external48W power adapter AC 100V-240V input.   OS support: Windows Me/Ce/98/2000/XP/Vista Linux etc.   Product standard: complying with CE, FCC, BSMI, CCC standard.   Signal characteristics: multi-scanning function, automatic recognition the resolution of input signal.   Display type: 8.4&quot; VGA TFT LCD.   Operating temperature: 0-55.   Storage temperature: -20-60.   Storage humidity: 5-95 no condensation.   Display color: 262K.   Vibration test: 5-17Hz,full width replacement 17-500Hz, 1.0G peak value.   Input signal: XGA/AV.   Viewing angle: (H)1w0/(V)110.   Brightness: 350Cd/m2.   Contrast: 300:01:00.   Backlight performance: 2 CCFL.   Lamp lifetime: 50,000h.   Response time: 25ms.   Active area: 170.4 x 127.8mm.   DY-84IPF: 84&quot;industrial flat display monitor VGA input toughened glass.   DY-84IPF-TC/U: 84&quot;industrial flat display monitor VGA input touch panel.   DY-84-IPF-AV: 84''industrial flat display monitor.   DY-84-IPF-D (customize): adjustable range color outline logo size etc.  

8.4 Inch TFT

ShenZhen FeelStorm Technology Co Ltd

                        Features: Wireless &amp; Portable Baby MonitoringConvenient, Reliable, SecureBuilt-in Microphones &amp; SpeakersTwo Way Communication EnabledExtended Wireless Range, 2.4Ghz Video Transmission3.2’’ inch Color Digital LCD Display ScreenUser Friendly Control InterfaceNight Vision IlluminationBaby Monitor Features Built-in Rechargeable BatterySimple Setup &amp; Hassle Free OperationAdjustable Camera Viewing Angle, 360° Degree RotationBuilt-in Thermometer for Room Temperature MonitoringButton Activated Musical Melodies &amp; Lullabies for Soothing ComfortUsed for Monitoring Your Child in Any Room of the House  About Us: Feelstorm works in the baby monitors field since 2012 with a strict quality control system, we own a strong R&amp;D team, all models with our own solution, design and patents. Products are always of high quality, the same is true for our service. OEM is welcome.    

Video Baby Monitor

Redot Technology Company Limited

1.FIFINE AM6 Gaming Microphone, a powerful and multifunctional product designed to elevate your gaming and recording experience. 2.Our latest design features double-layer RGB lights, crafted to elevate your gaming setup to new heights. 3.With fourteen vibrant RGB lighting effects, this innovative addition will transform your space into a dynamic, immersive atmosphere that's sure to make a statement. 4.Innovative monitor mixing control allows you to take charge of your gaming and communication audio with the ability to adjust the monitoring volume ratio. 5.Strike the perfect balance for your unique needs. Immerse yourself in crystal-clear sound with ENC Smart Environmental Noise Cancellation technology, effectively eliminating unwanted background noise and enhancing your voice. 6.Enjoy hassle-free communication with the convenient one-touch mute control. Experience seamless integration with USB plug-and-play functionality. 7.No complex setups – just plug in your AM6, and you're ready to showcase your voice. 

FIFINE AM6

Features Wireless &amp; Portable Baby MonitoringConvenient, Reliable, SecureBuilt-in Microphones &amp; SpeakersTwo Way Communication EnabledExtended Wireless Range, 2.4Ghz Video Transmission2.0’’ inch Color Digital LCD Display ScreenUser Friendly Control InterfaceNight Vision IlluminationBaby Monitor Features Built-in Rechargeable BatterySimple Setup &amp; Hassle Free OperationAdjustable Camera Viewing Angle, 360° Degree RotationBuilt-in Thermometer for Room Temperature MonitoringButton Activated Musical Melodies &amp; Lullabies for Soothing ComfortUsed for Monitoring Your Child in Any Room of the HouseProduct Description     Related Products   About Us Feelstorm works in the baby monitors field since 2012 with a strict quality control system, we own a strong R&amp;D team, all models with our own solution, design and patents. Products are always of high quality, the same is true for our service. OEM is welcome.     

Video Baby Monitor with Camera and Audio

RFeatures Wireless &amp; Portable Baby MonitoringConvenient, Reliable, SecureBuilt-in Microphones &amp; SpeakersTwo Way Communication EnabledExtended Wireless Range, 2.4Ghz Video Transmission3.2’’ inch Color Digital LCD Display ScreenUser Friendly Control InterfaceNight Vision IlluminationBaby Monitor Features Built-in Rechargeable BatterySimple Setup &amp; Hassle Free OperationAdjustable Camera Viewing Angle, 360° Degree RotationBuilt-in Thermometer for Room Temperature MonitoringButton Activated Musical Melodies &amp; Lullabies for Soothing ComfortUsed for Monitoring Your Child in Any Room of the HouseProduct Description     Related Products   About Us Feelstorm works in the baby monitors field since 2012 with a strict quality control system, we own a strong R&amp;D team, all models with our own solution, design and patents. Products are always of high quality, the same is true for our service. OEM is welcome.      

Smart All in One Babyphone Baby Monitor

  Features: Wireless &amp; Portable Baby MonitoringConvenient, Reliable, SecureBuilt-in Microphones &amp; SpeakersTwo Way Communication EnabledExtended Wireless Range, 2.4Ghz Video TransmissionColor Digital LCD Display ScreenUser Friendly Control InterfaceNight Vision IlluminationBaby Monitor Features Built-in Rechargeable BatterySimple Setup &amp; Hassle Free OperationAdjustable Camera Viewing Angle, 360° Degree RotationBuilt-in Thermometer for Room Temperature MonitoringButton Activated Musical Melodies &amp; Lullabies for Soothing ComfortUsed for Monitoring Your Child in Any Room of the House  About Us: Feelstorm works in the baby monitors field since 2012 with a strict quality control system, we own a strong R&amp;D team, all models with our own solution, design and patents. Products are always of high quality, the same is true for our service. OEM is welcome.       

Digital Baby Monitor Nanny Camera

Shenzhen Cadoch Technology Co., Limited

FIFINE AM6 Gaming Microphone

Shenzhen Viatom Technology Co Ltd

Product DescriptionBabyO2™ S2 Baby Oxygen MonitorRemind You of Baby's Sleeping SafetyContinuously monitor your baby's SpO2 &amp; Pulse Rate to check for breathAlarms for abnormalities in the base station Continuously Monitor What Matters: SpO2 &amp; Pulse Rate The baby monitor with medical-grade pulse oximetry sensor plugged into its main device unit at one full charge can continuously track biometrics like Oxygen levels, Pulse rate, and body movement for up to 16 hours.All the accurate readings are clear at a glance on the main device, base station and cellphone.Know When Your Baby Needs Your AttentionAudio alerts from the base station or cell phone will be triggered by low oxygen levels, too low or too high pulse rate, unusual motions.No more late night checking, so you could sleep better. Even when you're away from the nursery, it can keep insight into infants' breathing problems. Once there is amiss, you will receive the audible notifications and make an instant response.Never Miss Your Newborn's Danger SignalsBabyO2 S2 Gives Piece of Mind to ParentsAny possible risk for your newborns should not be overlooked. As new parents, anxieties within those first few months can take your toll. The newborn period can be overwhelming, giving all the responsibility of keeping your baby safe and healthy. Parents are always concerned about babies' respiratory or cardiac problems, especially premature babies in sleep condition. Read Q&amp;As of baby oxygen for new parents. Wellue created its baby oxygen monitor to give vital piece of mind to new parents. Detailed Sleep Reports as FilesUnlimited storage of history records is available. Detailed PDF/CSV format oximetry reports are supported by free PC Windows software and Mac APP.Exporting, printing and sharing the detailed sleep report help you better manage your baby's health data and communicate with doctors more conveniently.Relieve Stress and Sleep BetterThe responsibility of caring for a little one doesn't exactly disappear when the lights go out — in some cases, the times whenyour baby is asleep maybe when you feel the most anxious. Use Viatom baby breathing monitors to ease worried minds!* Real-time breathing tracking: SpO2 &amp; PR, motion* Audio reminders alert parents for abnormalities of the baby* Safe &amp; comfortable wearing* Free App &amp; sleep reports* Easy to use* Ultra long battery life* Perfect pick for traveling due to its light weightProduct advantagesFeature Comparison of Baby Monitors 

Viatom BabyO2 S2 Digital Spo2 Oxygen Blood Measurer

YUSUR Technology Co., Ltd.

YUSUR’s SWIFT-NDPP™(NDPP: Nano-latency Data Processing Platform) is an FPGA development platform for customers to implement their low latency applications. With this platform, users can focus on the development of their business logic without understanding low latency network communication technology. This product is based on YUSUR's ultra-low latency accelerator card and HADOS® software platform. It offers a network offloading engine NOE and integrates ultra-low latency MAC LightningMAC and ultra-low latency PCIe/DMA technology LightningDMA. NDPP also provides a convenient FDK (Firmware Development Kit) compatible with HLS/RTL development, all features are stable and easy to use, is a low-latency and high-performance infrastructure for financial trading, artificial intelligence, industrial Internet, and edge computing. TARGET USERSFinancial TradingIn financial securities and futures trading markets, SWIFT-NDPP™ provides hardware development platform with ultra-low latency capabilities. Helps financial customers achieve rapid transactions through standard interface in various scenarios, such as nanosecond-level market decoding, real-time risk control and trading strategy acceleration. Customers could quickly respond to market change and make decision, with higher profit and lower risk. Artificial IntelligenceIn the field of artificial intelligence, SWIFT-NDPP™ provides high-performance computing processing at the hardware layer, which can help customers quickly realize real-time analysis and prediction of massive data. It can also accelerate the training and inference of deep learning and neural network models, thereby improving response speed and efficiency of AI systems. Industrial InternetSWIFT-NDPP™ provides high-performance computing and ultra-low latency communication to meet the needs of the industrial Internet industry for real-time monitoring and production process control; it supports large-scale data processing and real-time analysis, and provides refined production predictions and optimization decisions through hardware acceleration, thereby reducing costs and improving production efficiency. Edge ComputingThe edge server based on SWIFT-NDPP™ can improve real-time data processing and decision-making capabilities of edge nodes. Significantly reduce network transmission delay between edge nodes and data centers, bringing applications and services closer to users, and providing ultimate business experience with high throughput and low latency. 

First ultra-low latency data processing development platform in China SWIFT-NDPP™

LUISUAN TECHNOLOGY (HONG KONG) CO., LIMITED

LightBoat 2300 series FPGA Card  Based on AMD UltraScale+™ structure, the product can be applied in network acceleration in data centres, AI inference and industrial marginal calculations. It excels at having a high throughput, low power dissipation and being flexible to expand. LightBoat 2300 series FPGA Card is built based on AMD UltraScale+™ structure with integrated VU23P chip, provides 2.252 million arithmetic logic units, 1,320 DSP slices and 99MB UltraRAM while supporting computing power of 4.1 TOPS. Each QSFP28 port supports up to 100Gbps, equals to the power and throughput of two 100Gbps adapters in a single PCIe 4.0 x16 slot. With 34 paths of GTY transmitter-receiver sets (32.75GB/s) and 4 paths of GTM pathways (58GB/s), low latency communications are ensured while being compatible with industrial environments. Efficiency and stable capacity are determined by 75W PCIe power supply plus an outer design of 120W power supply. The product possesses major advantages such as high throughput, being flexibly expandable and low power dissipation, applicable in network acceleration in data centres, AI inference and industrial marginal calculations.  LightBoat 2300 series FPGA Card is specially designed for intelligent networking and acceleration in data centres, carrying 58 high speed transmitter-receiver sets, supporting 200G SmartNIC, meanwhile, significantly reducing the loading capacity of CPU and optimising TCO. Regarding the characteristics of the product, three main advantages stand out. First, it's based on 16nm UltraScale+™ design and 3D piling technology, achieving super high logic density and balanced efficiency, hence an overall high efficiency structural design. Secondly, it's flexible for expansion, being compatible with marginal calculations and cloud calculations evolving protocols. Thirdly, full coverage rate. It empowers processing work of 5G stations, acceleration of AI inference, high frequency financial transactions and other scenarios. Also, the product supports a heterogeneous collaboration framework between Vitis developing platform and Arm processor, and provides a full flow acceleration solution from hardwares to algorithms, assisting in building intelligent infrastructures. Several aspects of values are embodied in the said product. High efficiency calculations: supports multiple high-speed ports such as dual-path 100G Ethernet, PCIe 4.0 etc., achieving large scale parallel calculations Low latency design: suitable for applications that require super high instantaneity, e.g. data analysis, data packet monitoring, high frequency transactions etc. Flexible and programmable: users can customise FPGA logic according to their needs and preferences; able to quickly adapt to different applications and scenarios High energy efficiency ratio (EER): has a significant rise in EER compared with traditional CPU and GPU Convenient: able to be deployed and run on both cloud and local, easy to install  

LightBoat 2300 series FPGA Card

Hangzhou AFSON Cable Co., Ltd.

   Wireless IR motion detector is a new product based on ZigBee HA standard design.   In normal condition, human body infrared ray can be detected in real time if someone illegally breaks in within the range of 6 meters from the detector, then detector can send out wireless alarm signal to the host to realize detection task.   Wireless IR motion detector applies wireless communication technology and does not need any wiring.   Moreover, it has powerful hidden ability and is not easy to be damaged when used in monitoring sites.  

Wireless IR Motion Detector

GOODAY INTERNATIONAL

Features：
   eRobot is a multi-functional product including video call function, remote monitor function, local recording function and wireless alarm function, which can satisfies your different needs.   It introduces advanced Cloudlink P2P network transmission technology, so that it can switch bitrates intelligently and adapt to any network environment.   Uilt-in 3C smart card, it is so easy to realize remote monitor and video call.   It introduces 3Dvoice sound engine technology, which can thoroughly improve the quality of network sound call.   H.264 Main Profile compression, which can make clearer and smoother image.   It has intuitive and user-friendly operation interface, you can start it without training.   It can support these two APP programs---IOS and Android, through APP program.   You can care family anytime and anywhere.  Functions:
   3C smart card is a cloud communication intelligent card that we specially design for eRobot. It can transmit bulky data among different LANS. Through 3C smart card, you don&rsquo;t need domain name or set port in router,you can easily realize remote monitor and video call,It won&rsquo;t charge you any fees except flows generated by network.   After install a free APP offered by us in IOS or Android device, then start APP program, you can directly dial eRobot&rsquo;s 3C number to make free video call with your family or friend.   Through APP program to remote control eRobot, you also can know everything happen at home, and care family always.   If no one at home, eRobot can help to monitor your house. If someone break into your house or accidentally catch fire, eRobot will alarm immediately, at the same time it will captures pictures and send the pictures to you by e-mail, so that you can know what happen at home.   eRobot can make continual recording in 24 hours, it can record everything happen at home, it won&rsquo;t miss any wonderful pictures.   If we launch new software version, eRobot will update online, so that you can try the newest function.  

Network Phone Camera

On Board Marine Group Limited

 	 Mass battery chargers are designed for the toughest conditions for professional, semi-professional and recreational purposes. Even under the most extreme conditions the products from the Mass series operate faultlessly, giving you round-the-clock output when necessary. The sustainability and technologies that underpin the Mass concept have long been proven in practice. With an MTBF of 180,000 hours at full capacity and 24/7 use, the Mass products are ideal for the toughest tasks and any situation that requires a reliable power supply.&nbsp; 	 Powerful&nbsp;selling points 	 Designed for the most difficult conditions. 	 Lightweight, stainless steel, anodized aluminum casing. 	 Coating of internal components prevents damage from damp or condensation to ensure a longer lifespan. 	 Insensitive to electromagnetic effects from other devices. 	 Suitable for every type of battery, also charges entirely empty batteries. 	 Delivered as standard with temperature sensor. 	 Full power at temperatures of up to 45˚C. 	 Load capacities from 80 to 1000 Ah or more. 	 Stable power supply of 24 and 48 V, even without batteries. 	 The Current Control function allows you to reduce the battery charger power to prevent blowing the fuse, even when the voltage drops. 	 Parallel switching possible using multiple battery chargers. 	 Connections in accordance&nbsp;with CE, ABYC A-31 and IEC60945. 	 Certified by&nbsp;RRR, RS,&nbsp;DNV (24/25, 24/50, 24/75, 24/100&nbsp;models) and&nbsp;Germanisch Lloyd, Lloyd (24/75, 24/100 models).&nbsp; 	 Type approval for application in safety zones A, B and C. 	 For professional use: GMDSS 	 Professional users will benefit from a front display with GMDSS alarm functions GMDSS stands for Global Maritime Distress and Safety System, an internationally agreed-upon set of safety procedures, types of equipment, and communication protocols that is a requirement for the SOLAS (Safety Of Life At Sea) convention and uses DSC and satellite communication. 	 This front display is only available for Mass 24/25-2 DNV, Mass 24/50-2, Mass 24/75,&nbsp;Mass&nbsp;24/100 and Mass 24/100-3ph. 	 Charging Lithium Ion batteries 	 Although Lithium Ion batteries are increasingly popular, there can be a lack of clarity when it comes to the charging process. This is not a problem with Mastervolt as the Mastervolt battery chargers communicate directly with the Lithium Ion battery via the integrated MasterBus (or have been adapted to the required charging voltages). 	 MasterBus compatible 	 Mass battery chargers can be easily connected to a MasterBus network with only one cable and one connection. You can also choose central, local or remote monitoring, configuration and control of your system.  

Mastervolt Battery Charger

Anpo Zhineng (HK) Technology Limited

Product Details:	CPU: Cortex-A7 Quad-Core @1.3GHZ	OS: Built-in Android 5.1	Screen: 98" Virtual screen, 2 LCD display	Resolution: WVGA (854 x 480 pix), Full HD 1080P	Memory: RAM: 1G,  ROM: 16G, support 128G TF card	Support WiFi &amp; Bluetooth	Video Format: Support 2D &amp; 3D (side by side)	Support download and install applications	Battery: 1800mAh, continuously working 3.5 hours	Product Size: 176 x 45 x 46(mm)	Product Weight: 128gFeatures:	Built-in Android 5.1 operation system	Comfortable video through two pannels	Enjoy virtual 98" huge screen with high resolution virtual image at 4 meters away privately	Lightweight design with only 128g, comfortable to wear, and will not make you pressed.	Built-in 1800mAh battery up to 3 hours	Individual adjustable interpupillary distance and myopia focus	Support miracast, connect to your mobile phone wirelessly	Experience all the stunning 3D immersive stereoscopic visualsApplication:	Wearable computers are a new concept of personal mobile devices. Because fixed computer networks can't solve the convenience of mobile, wearable computers are accompanied by computers that are constantly developing applications for ultra-micro. Now, it is developing rapidly all over the world.	Wearable computers are the inevitable product of the concept that "computers should be people-oriented". They are portableto carry and easy to operate. These characteristics make them widely used, such as forest fire prevention, river flood control, public security fire, telemedicine, baby monitoring,	Industrial production, equipment maintenance, geological survey, camera, military applications, personal entertainment and communications.FAQ:	Q1: How long is your Warranty of 3D Video Glasses?  A1: Usually we offer 12 Months Warranty for 3D Video Glasses(    details please ask by email )	Q2: Can I get samples ?  A2: Yes! You can! You are welcome to place a sample order to    check our superior quality and service!	Q3: What’s the delivery time?  A3: 1-2 days for sample orders,3-10 days for bulk order (based    on different quantities).	Q4: Can you print my brand name (logo) on these video glasses?  A4: Yes! We can provide professional OEM services to make it    your brand even for your trial sample order

Wifi Bluetooth 3D VR Video Glasses

Egoman Technology Corp Ltd

 This portable heart rate monitor is also a pocket GPS tracker. The 1.6&rdquo; FSTN display comes with high-contrast backlight for easy viewing of data. It supports KML and GPX file formats. 
 
  GPS accuracy: 4 meters. 
  Waypoint: 2,500; tracking: 25,000; POI: 50. 
  Guiding by preloaded route plan. 
  Supports Google Map and Google Earth. 
  Homing function by latest tracking information. 
  Supports information interface, cyclic display and display time interval setting (2S/4S/6S). 
  Multi-language supported. 
  Speed, altitude, longitude, latitude and other GPS information can be obtained by the AP. 
  IP rating: Ipx6. 
  Li-polymer battery. 
  Operation time: 17 hours (backlight off). 
  4GHz/ ANT + sports wireless communications protocol. 
  Training instant information display. 
  Real-time heart rate. 
  Training interval indication. 
  32mb flash memory. 
  Cold start: 35s. 
  Warm start: 35s. 
  Hot start: 1s. 
  Weight: 56g. 
 

Heart Rate Monitor

   1.6&quot; FSTN display with high contrast back light.   GPS accuracy: 4 meters of less in normal GPS mode.   Way point: 2, 500, tracking: 25,000, POI:50.   Guiding by preloaded route plan.   Support Google Map and Google Earth.   Homing function by latest tracking information.   Trip information: ODD/DIST/SPEED/CLOCK/ALTI/AVE-SPD/MAX-SPD/COMPASS/CALORIMETER/GPS INFO.   Support KML and GPX file format.   Support information interface cyclic display and display time interval setting (2S/4S/6S).   Users can be installed freely display information.   Support multi-languages.   Multi-point, multi-path navigation.   Speed, altitude, longitude, latitude and other GPS information can be obtained by the AP.   IPX6 waterproof.   Li-polymer battery, operation time 17 hours (back light off).   Heart rate monitor: 2.4GHz/ANT + sports wireless communications protocol.   Training instant information display.   Real-time heart rate shows.   Training interval indication (users can choose different train interval).   Alert when HR is not in specified zone.   Available PC show your instant HR and HR waveform.   32MB flash memory.   Cold start: 35s; warm start: 35s; hot start: 1s.   Operating temperature: -10&deg;C-60&deg;C.   Storage temperature: -45&deg;C-85&deg;C.  

Pocket Sports GPS with Heart Rate Monitor

eBon Technologies Inc.

This is a personal tracker with a built-in 3-axis G-sensor. It give a 12-hour period report in every 1, 5, 10 or 30 minutes.
    GPS engine:M-Star P2 GPS engine board  Standby time: 72 hours  Battery: 3.7V, 800mAh, rechargeable lithium battery  

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