TP4056 Battery Charger C Type Module with Protection The TP4056 1A Li-Ion Battery Charging Board Type C with Current safety is a small module designed for charging single-cell 3.7V lithium-ion batteries, such as 16550s, that do not have their own safety circuit. Using the TP4056 charger IC and the DW01 battery protection IC, this lithium battery charger produces a 1A charging current and will automatically stop charging once completed. Also, if the battery voltage goes below 2.4V, the safety IC will cut off the load to save the cell from functioning at an unacceptably low voltage. The TP4056 charging module also protects against overvoltage and reverse polarity connections, often sacrificing itself to preserve the battery. Just remember to double-check your connections the first time you put it up. Your batteries can be safely and easily charged with TP4056 lithium-ion battery charger. All you need to do is connect it correctly, and it will do the rest. Use the Module Through the Following Steps: To supply power, either plug in a Type C cable or attach a 5V DC source to the IN+ and IN-labeled pads on the module's left side. Fasten the battery that has to be charged to the B+/B- pads on the module's right side. The OUT+/OUT- pads on the right side can also be used to attach a load, or an object that the battery will power. Keep in mind that while the battery is charging, unplug the load. When the charging process is finished, the green LED will turn on, while the red LED will illuminate to signify that the charge is ongoing. Be careful to never charge your battery at a rate exceeding 1C Note: Please remember the following crucial information: The module's 5V input side is the only one to which the ampere meter should be attached. A charging current of around 37% of the battery's capacity is advised. A 400mAh charging current is adequate for a 1000mAh battery. Make use of reasonably thin connecting cables. Verify the security of the connecting point. It is usual for the current to decrease below 1000mA if the input voltage is greater than 5.2V. In order to shield the chip from harm, this protective function immediately lowers the charging current. Reverse polarity should be avoided at all costs. Features It features a modern USB Type-C port that provides convenient and universal power. This module includes integrated protection against over-charge, over-discharge, and short-circuits. It utilizes an intelligent CC/CV algorithm to ensure a fast, safe, and efficient charging cycle. It is equipped with clear dual-LED indicators for at-a-glance monitoring of the charging status. This module is perfectly designed for charging single-cell 3.7V Li-Ion and Li-Po batteries. Its compact and high-precision design allows for seamless integration into any electronics project.

Mornsun LMF75-23B15 AC/DC 75W Enclosed Switching Power Supply The LMF75-23B15 is a 75W enclosed AC-DC switching power supply from Mornsun. It features a universal AC input voltage of 85-305VAC or DC input voltage of 120-430VDC, built-in active PFC function, high efficiency, and high reliability. It also has output short circuit, over-current, over-voltage, and over-temperature protection. The LMF75-23B15 is designed to meet IEC/EN/UL62368, EN60335, GB4943 standards and is widely used in areas of industrial, LED, street light control, electricity, security, telecommunications, smart home, etc. Features: Universal AC input voltage of 85-305VAC or DC input voltage of 120-430VDC Built-in active PFC function High efficiency (up to 87%) High reliability Output short circuit, over-current, over-voltage, and over-temperature protection Designed to meet IEC/EN/UL62368, EN60335, GB4943 standards Widely used in areas of industrial, LED, street light control, electricity, security, telecommunications, smart home, etc. check out : Mornsun LMF75-23B05 AC/DC 75W Enclosed Switching Power Supply Note: Unless otherwise specified, parameters in this datasheet were measured under the conditions of Ta=25?, humidity<75%RH with nominal input voltage and rated output load The room temperature derating of 5?/1000m is needed for operating altitude greater than 2000m All index testing methods in this datasheet are based on our company's corporate standards In order to improve the efficiency at high input voltage, there will be audible noise generated, but it does not affect product performance and reliability The out case needs to be connected to the earth ( )of system when the terminal equipment in operating The output voltage can be adjusted by the ADJ, clockwise to increase Our products shall be classified according to ISO14001 and related environmental laws and regulations and shall be handled by qualified units The power supply is considered a component which will be installed into the final equipment. All EMC tests should be confirmed with the final equipment

18650 1 Cell Holder This is a 1x battery cell holder for a rechargeable 18650 Lithium-Ion Cell. These battery holders are used to add single lithium cells and have clearly marked with polarity identification to assure proper orientation. It has shrapnel screens to hold the batteries, making the installation and replacement of the battery safe, easy, and reliable. Features Holds a single 18650 battery. Easy install, convenient to use. High-quality plastic material. Applications: Robotics: The 18650 Single Battery Cell Case Holder allows for easy incorporation of 18650 cells into robotics applications by providing a simple way to connect and power devices Prototyping: It is ideal for prototyping projects where a single 18650 Lithium-Ion Cell needs to be securely held and connected, ensuring proper orientation and easy installation DIY Electronics: Commonly used in do-it-yourself electronics projects, the holder facilitates experimentation and modification of circuits by providing a flexible and removable power source Automotive Electronics: In automotive applications, such as key fobs and portable navigation devices, the cell holder enables convenient battery replacement, ensuring uninterrupted operation of electronic components

NOVEL Li-ion Single Battery Charger Plug in Type NOVEL Li-ion Single Battery Charger, a reliable and efficient solution for powering your lithium-ion batteries. Designed with convenience in mind, this plug-in charger offers a straightforward charging experience. Its compact design ensures easy portability, making it an ideal choice for both home and travel use. Crafted from durable plastic, the NVL-006 charger is built to withstand everyday wear and tear. With an output voltage of 9V, it provides the necessary power to charge your batteries effectively. Whether you're at home or on the go, this charger ensures your devices stay powered and ready for use.

Mornsun LI30-20B48PR2 AC/DC 30W DIN-Rail Power Supply The LI30-20B48PR2 is a cost-effective and energy-efficient AC/DC power supply with 48VDC output. It has an extremely compact design that saves space on your DIN-Rail and is ideal for applications like industrial control and building automation. Features: Compact design Energy-efficient Standard DIN-Rail mounting 48VDC output Wide input voltage range (85-264VAC or 120-370VDC) High current output (0.75A) High isolation voltage (4000VAC) Overvoltage, undervoltage, overcurrent, and overload protection Note: Unless otherwise specified, parameters in this datasheet were measured under the conditions of Ta=25?, humidity<75%RH with nominal input voltage and rated output load The room temperature derating of 5?/1000m is needed for operating altitude greater than 2000m All index testing methods in this datasheet are based on our company's corporate standards In order to improve the efficiency at high input voltage, there will be audible noise generated, but it does not affect product performance and reliability The out case needs to be connected to the earth ( )of system when the terminal equipment in operating The output voltage can be adjusted by the ADJ, clockwise to increase Our products shall be classified according to ISO14001 and related environmental laws and regulations and shall be handled by qualified units The power supply is considered a component which will be installed into the final equipment. All EMC tests should be confirmed with the final equipment

11.1V 5200mAh 35C 3S1P Bonka Lipo Battery Lithium Polymer (AKA “LiPo”) batteries are a type of battery now used in many consumer electronics devices. They have been gaining in popularity in the radio control industry over the last few years and are now the most popular choice for anyone looking for long run times and high-power The 5200 mAh 35C 3S1P Bonka Lipo battery is a great choice which is specially designed for high power output such as for Quadcopters, Airplanes, RC Boat, RC Cars, etc. Extend your battery life with the iMax B6AC 80W Balance Charger . Safety Precautions: In order to maintain the efficiency and battery life of the batteries, avoid overcharging or over-discharging them. Batteries must not be kept near hot devices, surfaces, or substances. This can lead to severe damage and/or fire. To avoid environmental damage, do not throw the Lithium Polymer batteries into water or fire. Never leave this battery on charge unattended. Check out the best collection of Lipo Batteries . Also, read our blog on Li-ion vs Li polymer to understand Li-po vs Li-ion battery Which One to Choose? Features: Type: Lithium Polymer (LiPo) Battery Voltage: 11.1V Capacity: 5200mAh Discharge Rate: 35C (continuous), 70C (burst) Cell Configuration: 3S1P (3 cells in series, 1 cell in parallel) Connectors: JST-XH balance plug, JST 4Pin connector And XT60 Female connector High Power Output: Designed for quadcopters, RC cars, RC airplanes, and other demanding applications. Heavy Duty Discharge Leads: Minimizes resistance and handles high current loads Applications for this product: The Bonka 5200 mAh LiPo battery can be used in RC Cars Quadcopters RC airplanes Power various small low-powered embedded devices. Also, check 22.2v 22000mAh 25C/50 6S1P DJI S1000 Bonka Lipo Battery Pack .

XL6019 DC-DC 5A Adjustable Boost Power Supply Module(RED) DC to DC step up module based on the upgraded XL-Semi XL-6019, offering up to 5A switching current and conversion efficiency of up to 97%. This XL6019 boost converter has two input pins for VCC and GND on the left side of the module. It has two output pins on the right side of the module. To get the desired output voltage you have to rotate the trimpot screw. It changes the feedback resistance value and thus the output voltage with respect to the input voltage. As this module is a step-up converter, therefore, the output current is always smaller than the input current. If the output power is greater than 10W then add the heat sink with the module otherwise it may damage the module. Features With reverse connect protection, output 5V / 12V / 24V adjustable, beyond LM2577 performance. The built-in thermal protection, over-current protection reliability. Wide input voltage range, the input voltage up to 35V. Adjustable output voltage, maximum support 40V. The built-in thermal protection, over-current protection full reliability protection circuit, high reliability. System conversion efficiency can achieve 90% above, convenient thermal design. TO263-5 l standard packaging, suitable for booster application within 30W. Also check the LM2596 Mini 360 Aircraft Power Supply Step-down Module . It is a non-isolated BUCK module with synchronous rectification. The module features an integrally molded power inductor and a synchronous rectifier control chip. It includes built-in 160°C thermal shutdown for safety and boasts low output ripple of 30mV (no-load).

Witty Fox 130mAh Rechargeable 3.7V LiPo Battery The Witty Fox 130mAh Rechargeable 3.7V LiPo Battery is a compact and lightweight lithium polymer battery designed for applications requiring a reliable and rechargeable power source. With a nominal voltage of 3.7 volts and a capacity of 130mAh, this 1S battery cell configuration offers a stable and consistent power output suitable for small electronic devices such as drones, wearables, and portable gadgets. It operates efficiently within a temperature range of 0? to 50?, ensuring dependable performance in typical consumer environments. The battery supports up to 500 charge-discharge cycles, providing a durable and long-lasting energy solution for repeated use. It is important to note that not all 3.7V batteries are rechargeable; some are primary batteries intended for single use only. The Witty Fox battery, however, is a rechargeable lithium polymer (LiPo) type, which uses a polymer electrolyte allowing for a flexible and lightweight design. LiPo batteries like this one are favored for their high energy density and customizable form factor, making them ideal for compact devices. Proper charging and maintenance can maximize the battery’s lifespan and performance, making it a practical choice for users seeking a balance of power, size, and longevity in a rechargeable 3.7V battery. Features: Rechargeable lithium polymer (LiPo) battery technology Lightweight and flexible design ideal for portable devices Stable voltage output ensures reliable performance Wide operating temperature range for versatile applications High cycle life enhances durability and cost-effectiveness Suitable for drones, wearables, and other compact gadgets

Arduino UNO R3 SMD Board Compatible with Arduino One of the new ways into the world of electronic innovation is the SMD Arduino UNO R3 Development Board with Cable. This board is totally different from the Arduino Uno R3. Uno R3 and Uno R3 SMD both boards are based on the ATmega328P Microcontroller but the difference is that the UNO R3 is through-hole version, and this is an SMD version or Surface Mount Device version. A SMD or surface-mount device is an electronic component that is mounted directly onto the surface of a printed circuit board (PCB), rather than being inserted through holes. The board has dimensions of 7 x 5 x 1cm and comes to the fore as a compact and reliable choice for both beginners and experienced electronics enthusiasts. It is designed with 14 digital input/output pins, 6 analog inputs, a 16MHz crystal oscillator, a USB connection, and the CH340G USB to UART Converter Chip, this development board is a perfect match for the electronic prototypes that you want to build with Arduino. This Arduino programming board is a must-have if you're into robotics, IoT, home automation, and security system projects. If your projects are large or small, this Arduino UNO R3 ATmega328P SMD microcontroller brings to you a whole lot of potential and creativity. Buy Genuine Arduino Uno R3 – Best Price! Pin Diagram Comparison of Uno Boards: Specification UNO Wifi UNO SMD UNO R3 Microcontroller ATmega4809 ATmega328P (SMD) ATmega328P (Through hole) USB connector Micro-USB USB-B USB-B Digital I/O Pins 14 14 14 Analog input pins 6 6 6 PWM pins 5 6 6 UART Yes Yes Yes I2C Yes Yes Yes SPI Yes Yes Yes I/O Voltage 5V 5V 5V Input voltage (nominal) 7-12V 7-12V 7-12V DC Current per I/O Pin 20mA 20 mA 20 mA Power Supply Connector Barrel Plug Barrel Plug Barrel Plug clock speed 16 MHz 16 MHz 16 MHz USB-Serial chip ATmega16U2 CH340 ATmega16U2 SRAM 6.144KB 2KB 2KB Flash Memory 48KB 32KB 32KB EEPROM 256 Bytes 1KB 1KB Dimensions 68.6 mm x 53.4 mm 68.6 mm x 53.4 mm 68.6 mm x 53.4 mm RADIO MODULE u-blox NINA-W102 - - Inertial Measurement Unit LSM6DS3TR (3D accelerometer) - - LED_BUILTIN 25 13 13 Wi-Fi Microprocessor Yes - - Why Choose the SMD Version? Compact design allows smaller, space-efficient circuits. Cost-effective due to automated manufacturing and minimal material use. High reliability with better resistance to vibration and mechanical stress. Improved electrical performance with reduced signal loss and interference. Lightweight and ideal for modern compact electronics. Faster production and easier large-scale assembly. Comparison: Original Arduino UNO vs Compatible SMD UNO Feature Original Arduino UNO Compatible SMD UNO Microcontroller ATmega328P (DIP) ATmega328P (SMD) Build Type Through-hole components Surface-mount components Chip Replaceability Removable and replaceable Fixed (non-removable) Size Slightly larger More compact Performance Same processing power Same processing power USB Interface ATmega16U2 CH340 or similar USB-to-Serial chip Ease of Repair Easier (replaceable chip) Harder to repair Cost Slightly higher More affordable Durability Very robust Slightly less robust mechanically Best For Learners who want to experiment with hardware Budget-friendly, compact projects Beginner Project Ideas with Arduino UNO SMD LED Blink Project Temperature Sensor Monitoring Light Sensor (LDR) Based Automation DC Motor Speed Control Ultrasonic Distance Measurement RGB LED Color Mixing Servo Motor Angle Control Sound Sensor Activation IR Remote Controlled LED Push Button Counter Display Applications: Arduino Music Instrument Robot Car Fingerprint door lock Home Automation Security systems

3.7v 2000mah 18650 Li-Ion Battery 18650 lithium-ion battery is a Li-ion rechargeable battery with a 2000 mAh Battery Capacity. This is not a standard AA or AAA battery but is very useful for applications that require continuous high current or high current in short bursts like in cameras, DVD players, iPod, etc. These 3.7v 18650 li-ion battery 2000mah are safe to use, environment friendly and have long battery life. This li ion battery comes with high energy density and provides excellent continuous power sources to your device. It should be used with a protection circuit board that guards the 18650 battery against over-charge, over-discharge of the pack, and avoid over-current drawn. It is very easy to use the cell in any circuit just solder the wires on the terminals or use 18650 li-ion battery holders to easily replace the used cells. Care must be taken while handling Li-ion batteries as they are volatile and inflammable and should not be handled roughly and punctured. Also, don’t overcharge and discharge beyond a certain point as gases accumulated inside might result in explosions and fire. So always use the Protection board while using Li-Ion cells. Note: We do not recommend using this 3.7v 18650 lithium ion rechargeable battery for critical applications. The capacity and performance of the cell might vary based on charging and discharging parameters. Please note that we do NOT provide any guarantee/warranty on this product. Read our blog about Battery AH means , It covers all the details of batteries. Features: Safe to use, environment-friendly, and with long battery life High energy density for excellent continuous power sources Use with a protection circuit board to guard against over-charge, over-discharge, and over-current Easy to use in any circuit by soldering wires on the terminals or using battery holders Applications: Cordless Phones Tablet PC GPS iPod, DVD, MP4 Player, etc. Mobiles backup power supply/Power bank

0.9V-5V to 5V 600MA USB Output charger step up Mini DC-DC Boost Converter This Step-up Module is highly beneficial as it allows for an input range of 0.9-5V and an output of 5V, which is compatible with a variety of digital devices. As a result, it is an excellent choice for creating a portable charger and can prove useful in USB charger projects and onboard USB device supply solutions, such as GoPro cameras. Moreover, This boost converter offers versatility in terms of power supply options. It can be powered by a single-cell LiPO or AA size battery, or other similar options. When powered by two AA batteries, it can output a current of 500-600mA. On the other hand, a single AA battery power supply can provide an output of 200 mA current supply, making it ideal for mobile phones, cameras, single-chip, and digital products supply. Applications USB voltage regulator for USB-powered device. This module will bring the USB voltage required for your application at regulated 5V output. Various USB devices need 5V from low voltage batteries. Charge mobile phone/MP4/MP3 from AA battery when traveling Features The module adopts a high-performance imported chip, performance is superior to the common module. Work with indicator light. Take the USB female, a wide range of Uses. A single AA battery power supply can output current up to 200-300 mA. Two AA batteries to the output current of 500-600 mA. Work from battery voltage as low as 0.9V, allowing you to maximize battery use. If your USB device is critical on 5V operation you can use this module.

Witty Fox 3.7V 2600mAh Li-Ion Battery - Cylindrical The rechargeable Witty Fox 3.7V 2600mAh Li-Ion battery finds wide usage across various electronic devices, ranging from GPS systems and DVD players to MP4 players and tablet PCs. Additionally, it is commonly used as a power source for mobile backup supplies, power banks, Bluetooth speakers, IOT devices, and industrial applications. Charge your LiPo, LiFe, and NiMH batteries with the iMax B6AC 80W . Also, read our blog on Li ion vs Li polymer detailing the Comparison between Li po vs Li ion battery. FEATURES: Pack over-voltage Protection Pack under-voltage Protection Over voltage Protection, CELL Under-voltage Protection, CELL Over Load Protection Over current Protection Short circuit protection Reverse Polarity Protection

1800mAh AA Rechargeable Battery 1.2V Introducing the OSLETECH 1.2V 1800mAh AA Rechargeable Batteries the ultimate choice for long-lasting power and reliability. Designed to be the longest-lasting batteries per charge, these high-performance AA batteries can be recharged hundreds of times which makes it a cost-effective and eco-friendly choice. These batteries deliver impressive energy density and exceptional performance, even across varying temperature conditions. These proudly made in India, OSLETECH’s 1.2V 1800mAh AA Rechargeable Batteries provide both extended lifespan and elevated power and ensure your gadgets stay powered longer.

DFRobot Bluetooth 5.0 Audio Receiver Board The Bluetooth 5.0 Audio Receiver Board is a compact and cost-effective solution for adding wireless capabilities to your existing speakers. This versatile Bluetooth audio receiver allows you to easily transform any old speaker system into a modern wireless setup without complicated wiring or expensive replacements. The module features the latest Bluetooth 5.0 technology, ensuring stable connections and quality audio transmission up to 15 meters in visible range. With its automatic reconnect function, you won't need to repeatedly pair your devices - once connected, the module remembers your device for future use. The board can be powered either through a micro-USB connection or a 3.7V lithium battery, giving you flexibility in how you install and use this wireless speaker converter. What makes this Bluetooth 5.0 adapter particularly valuable is its dual functionality. Beyond serving as a wireless audio receiver, it can also function as a computer sound card. By simply short-circuiting the Sound Card pads on the back of the module and connecting it to a computer via USB cable, you can use it as a USB sound card module - perfect for computers with damaged audio outputs or for adding an extra audio interface. The operation is straightforward: after powering on, the blue indicator flashes as the module enters Bluetooth mode and plays an audio prompt while waiting for pairing. Your phone will detect the module as "BT5.0-Audio," and once connected, the indicator remains solid when idle and blinks slowly during music playback. Features: Power supply options: micro-USB or 3.7V lithium battery for flexible installation. Bluetooth version: 5.0 with automatic reconnect function for stable connections. Transmission distance: 15 meters in visible range for wide coverage. Audio decoding support: WAV, APE, FLAC, and MP3 formats. Dual functionality: works as both Bluetooth receiver and computer sound card. Clear connection status indication through LED light patterns. Compact size for easy integration into existing audio systems.

Witty Fox 200mAh Rechargeable 3.7V LiPo Battery The Witty Fox 200mAh Rechargeable 3.7V LiPo Battery is a compact and efficient power source designed for devices requiring a nominal voltage of 3.7 volts and a capacity of 200mAh. Featuring a 1S battery cell configuration, this lithium polymer battery offers reliable energy density and lightweight performance, making it ideal for small electronics, drones, and other portable gadgets. Its rechargeable nature ensures long-term usability, reducing the need for frequent replacements and supporting sustainable use. LiPo batteries, including the Witty Fox 200mAh model, are generally safe when handled correctly but require careful use due to their chemical composition. Proper safety measures include inspecting the battery for any signs of damage or swelling before use, charging only with compatible chargers on non-flammable surfaces, and avoiding overcharging or discharging below recommended voltages. Storing the battery in cool, dry conditions and never puncturing or exposing it to extreme heat are crucial to prevent risks of fire or explosion. Following these guidelines ensures safe operation and maximizes battery life. Features: Nominal 3.7V suitable for a wide range of gadgets Lithium Polymer (LiPo) for high energy density 1S (single cell) for simplicity and efficiency Supports multiple charge cycles for sustainability Requires proper handling and compatible chargers to prevent risks Fits easily into small devices without adding bulk