3 Series 20A 18650 Lithium Battery Protection Board

7Semi MAX17048 LiPoly - LiIon  Battery Fuel Gauge Breakout Module The 7Semi MAX17048 LiPoly - LiIon  Battery Fuel Gauge Breakout Module is a reliable and easy-to-use battery fuel gauge module built for accurate monitoring of single-cell lithium batteries. Using the MAX17048 IC, this single-cell lithium battery monitor delivers precise state-of-charge and voltage measurements without the need for a current-sense resistor, simplifying circuit design. With its I2C interface, the board integrates smoothly with microcontrollers, making it perfect for real-time battery tracking in portable devices, IoT applications, and DIY electronics projects. Features: MAX17048-based battery fuel gauge module for accurate SoC measurement Supports Li-Ion and Li-Poly single-cell lithium battery monitoring No current-sense resistor required for simplified design I2C communication for easy microcontroller integration Compact breakout board suitable for portable and IoT projects Benefits: Streamline your process: Avoid project delays and time-consuming guesswork with instantaneous battery % monitoring. For seamless and effective operations, know precisely when it's time to recharge. Advanced surveillance without the trouble: These intricate battery calculations are handled by the sophisticated MAX17048 microcontroller, which provides you with extremely precise data without requiring any programming or analysis on your behalf. All-purpose compatibility for every project: Whether you're using Arduino, Raspberry Pi, or other well-known microcontrollers, you can easily incorporate this board into your configurations. For optimal versatility across many systems, it supports both 3.3V and 5.0V logic levels. Optimize battery life by tailoring low-power modes and alarms to your specific project requirements, making the most of your LiPo batteries for extended runtimes. Go beyond simple voltage measurements: The MAX17048 offers a reliable, real-time state-of-charge percentage, so you can learn the truth about the condition of your battery.

7Semi DC Buck Converter Breakout 3.8V 2A Out (AP62301) (BO-10132) The 7Semi DC Buck Converter Breakout 3.8V 2A Out (AP62301) (BO-10132) is a compact power module designed to step down higher DC voltages to a stable 3.8V output with up to 2A current. It supports a wide input voltage range, making it suitable for use with batteries, adapters, and other DC power sources in low-voltage electronics. Built on an efficient synchronous buck converter design, this module delivers reliable power with minimal heat and energy loss. Its small size makes it ideal for space-constrained projects such as IoT devices, embedded systems, and portable electronics. Whether you’re prototyping or building a final product, this buck converter offers a simple and dependable power solution. Features: Provides stable 3.8V output at up to 2A continuous current Accepts a wide DC input range for flexible power sources High-efficiency synchronous buck converter design Low heat generation for efficient power use Compact breakout board for easy integration Ideal for IoT, battery-powered, and embedded electronics Suitable for microcontrollers, sensors, and small devices

AA 4-Cell Battery Holder – Hard Plastic 6V Battery Case with Wire Leads This AA 4-Cell Battery Holder is a durable and reliable power solution designed to securely hold four AA batteries and deliver a stable 6V output. Built from high-quality hard plastic, it ensures long-lasting performance and is ideal for DIY electronics, school projects, robotics, LED circuits, Arduino-based builds, and small hobby devices. Its compact size and lightweight design make it easy to integrate into any enclosure or prototype. The holder includes pre-attached wire leads, making soldering or connecting to breadboards fast and convenient. Whether you're assembling a small electronic project, building battery-powered gadgets, or replacing a damaged battery case in a device, this 4-cell AA battery holder provides a dependable and easy-to-use power source. Its secure cell grip keeps the batteries firmly in place, preventing loose connections during operation. Features: Holds 4 AA batteries, providing a stable 6V DC output for electronics and DIY projects. Built with hard, durable plastic to ensure long-term reliability and secure battery placement. Comes with pre-soldered wire leads for easy connection to Arduino, breadboards, or circuits. Lightweight and compact design makes it suitable for robotics, small appliances, and prototyping. Provides firm battery retention to avoid shaking or disconnection during movement or vibration. Ideal for hobbyists, students, and makers working on low-voltage portable power applications.

1200mAh AAA Rechargeable Battery 1.2V (Pack of 2) The OSLETECH AAA Rechargeable Batteries combine efficiency, effectiveness, and environmental friendliness in the ideal balance. This pair of globally recognized and broadly compatible Ni-Mh batteries are fully charged and ready to use right out of the package. Boasting an industry-leading 1200mAh capacity, these batteries offer over 500 charge cycles and feature a no-memory effect, allowing them to be charged and discharged as needed without losing capacity. These batteries also support quick charging via any smart or quick charger. These OSLETECH 1200mAh Rechargeable AAA Batteries are also designed for Rechargeable and reusable with the environment in mind. These batteries are made in India products and the smart choice for sustainable energy. Key Features: Cost-effective with many recharge cycles. NiMH chemistry for balanced performance. Fits various devices. Available in different mAh ratings. Rated at 1.2 volts for broad compatibility. Charging time varies by charger. Applications: Remote controls Digital cameras Wireless computer accessories Compact flashlights Portable audio devices Toys Clocks Calculators Handheld gaming devices Medical devices

Dual Micro USB 18650 LiPo DIY Power Bank Module (3.7V to 5V, 2A Output) The Dual Micro USB 18650 LiPo DIY Power Bank Module is designed to convert a 3.7V 18650 lithium battery into a stable 5V output with up to 2A current, making it perfect for charging smartphones, IoT devices, and other USB-powered gadgets. At its core, this module functions as a compact power management and boost conversion board, allowing you to build a fully customized portable power bank. It features dual Micro USB ports for convenient charging and integrated LED indicators to display charging and power status. Ideal for DIY enthusiasts, makers, and electronics hobbyists, this board gives you the flexibility to create your own reliable mobile power solution—provided you have basic electronic assembly knowledge. When installing items, it is important to keep the following in mind: Batteries can be connected in parallel with a voltage ranging from 3.2 to 4.2V, including 18650 flat and polymer batteries. We can connect the battery to the motherboard B + negative-, which is installed against the burning motherboard. Batteries that are new and old, or that have contradictory model brands, cannot be mixed. Features: Four-level LED bulb displays power, not working situation intelligent automated shutdown. The built-in lithium battery protection IC, overcurrent, overpressure, and undervoltage protection Dual USB output ports. Input requirements: 5V constant voltage power supply can charge input power, the most matching charger for 5V 1A or above. Requirements for rechargeable batteries: Compatible batteries include 18650 batteries, cell phone batteries, flat-panel batteries, MP3 batteries, and polymer lithium batteries ranging from 3.7V to 4.2V.

7Semi DC Buck Converter Breakout 3.3V 2A Out (AP62301) (BO-10131) The 7Semi DC Buck Converter Breakout 3.3V 2A Out (AP62301) is a compact power module that converts higher DC voltages into a stable 3.3V output with up to 2A current. It accepts a wide range of input voltages, making it useful for powering low-voltage electronics from batteries, adapters, and other DC sources. This makes it ideal for projects that require a reliable 3.3V supply. Built using an efficient synchronous buck converter design, this board delivers dependable power with minimal energy loss and low heat output. The small form factor allows easy integration into your electronics builds, especially space-constrained and portable systems. Whether you’re working on IoT devices, embedded controllers, or sensor systems, this converter provides a simple and efficient power solution for your 3.3V needs. Features: Provides a stable 3.3V output with up to 2A continuous current Accepts a wide DC input voltage range for flexible power sources High-efficiency synchronous buck converter design Low heat generation for efficient and safe power delivery Compact breakout board for easy integration and prototyping Ideal for IoT devices, embedded systems, and battery-powered projects Suitable for powering microcontrollers, sensors, and communication modules

3V CR2025 Lithium Coin Battery The CR2032 3V Lithium Coin Battery is widely utilized due to its dependable and long-lasting power supply for a variety of small electronic devices. This cr2032 battery includes calculators, wristwatches, remote controls, various medical devices, fitness gadgets, machines, toys, and others. Featuring a flat top and a 225mAh capacity, the cr2032 battery is a 3V lithium coin battery that's specifically designed for use in miniaturized products. Its plus terminal utilizes manganese dioxide, which is chemically stable, resulting in 90% capacity retention even after a decade of proper storage. Additionally, The battery organic electrolytes are resistant to leakage when exposed to environmental changes. Features High and Stable voltage (3V) A full lineup for use in a wide variety of applications No mercury added Useful in a wide range of temperatures (-30°C to +60°C) The very high weight-to-power ratio Manganese dioxide material High capacity Long Lasting life. Low self-degradation rate and superior storability 0.2mA continuous standard drain High leak protection and hence no oxidation damage in devices, so it can be used in any expensive Gadget with superior safety. Resistance to continuous discharge and hence Very low self-discharge; Note: These batteries are Non-Rechargeable. ?Also check 24mm Coin type battery holder available on the Iotcart website. The holder is versatile, accommodating various sizes and shapes of coin cells, with a secure design to withstand shock and vibration. It operates at a voltage rating of 3.3V and finds applications in portable devices, computers, consumer electronics, power management, commercial, and security.

7Semi DC-DC Buck Converter 7V-40V Input to 5V 5A Output- AP64500 (BO-10188) The 7Semi DC-DC Buck Converter 7V–40V Input to 5V 5A Output – AP64500 (BO-10188) is a high-power voltage regulator module designed to convert higher DC input voltages into a stable 5V output with up to 5A current. Its wide input range makes it suitable for many power sources, including batteries and industrial supplies, where reliable 5V power is needed. Built around the efficient AP64500 synchronous buck converter, this module delivers stable output with low heat and high efficiency, even under heavy load. It is well suited for powering microcontrollers, single-board computers, sensors, and communication modules. Whether you’re building robotics, automation systems, or advanced electronics projects, this buck converter provides dependable and efficient power management. Features: Wide input voltage range: 7V to 40V DC Stable 5V output with up to 5A continuous current High-efficiency synchronous buck converter using AP64500 Low thermal loss and reliable performance under load Compact breakout module for easy project integration Built-in power protection features for safe operation Ideal for microcontrollers, SBCs, IoT and embedded systems Suitable for robotics, automation, and power supply projects

7Semi DC Buck Converter Breakout 5V 2A Out (AP62301) (BO-10133) The 7Semi DC Buck Converter Breakout 5V 2A Out (AP62301) is a small power module that converts higher DC input voltages into a steady 5V output with up to 2A current. It allows you to power 5V-based electronics from a wide range of DC power sources such as batteries and adapters. This makes it perfect for projects that need a reliable 5V supply. Built with an efficient synchronous buck converter design, this module delivers stable power while keeping energy loss and heat to a minimum. Its compact size makes it easy to add to space-limited electronics projects like IoT devices, microcontroller boards, and portable systems. Whether you’re building sensors, development boards, or embedded systems, this buck converter gives you a simple and dependable way to get 5V power. Features: Provides a stable 5V output with up to 2A continuous current Accepts a wide range of DC input voltages for flexible power sources Efficient synchronous buck converter design for low power loss Low heat generation for cool and reliable operation Compact breakout board for easy integration and prototyping Ideal for powering 5V microcontrollers, sensors, and IoT devices Perfect for embedded systems, portable electronics, and hobby projects

Holybro PM07 Power Module (14S) The Holybro PM07 Power Module (14S) is a robust and reliable power module designed to deliver clean, regulated power to your drone’s flight controller and onboard electronics, supporting up to 14-cell LiPo battery configurations. Engineered for high-current UAV applications, this module provides accurate real-time voltage and current monitoring, helping ensure safe operation while protecting sensitive components from electrical faults. Its efficient power delivery and dependable performance make it an essential component for advanced drone builds and professional UAV platforms. Built to simplify wiring and enhance system reliability, the Holybro PM07 Power Module integrates seamlessly with popular flight controllers, reducing clutter and improving overall power management. Whether you’re developing high-performance multirotor drones, autonomous platforms, or research UAVs, this power module offers consistent energy supply, precise monitoring, and improved safety for extended flight operations, giving you confidence in both performance and durability. Please Note: The XT60 Plug and 12AWG wire that are pre-soldered on the board is rating for 30A continuous current and 60A burst current (< 60 Seconds). If a higher current is being used, the plug type and wire size should be changed accordingly. You can refer to this chart for reference. This PM02 Power Module uses analog data output and is not compatible to the Pixhawk 5X & 6X (Requires a digital PM like PM02D). Features: High-capacity power module designed to support up to 14S LiPo batteries for advanced UAV applications. Delivers clean and stable power to flight controllers and onboard electronics. Provides accurate real-time voltage and current sensing for improved flight safety. Built for high-current handling in professional and heavy-lift drone platforms. Reduces wiring complexity with an integrated power and monitoring solution. Ideal for multirotor drones, autonomous UAVs, and research-grade aerial systems.

CHAM CMINR14500F2 1000mAh 2C 3.6V AA Rechargeable Li-ion Battery Introducing the CHAM CMINR14500F2 rechargeable Li-ion battery – a compact, single-cell AA-sized power source delivering 3.6 volts at 1000mAh. Designed for projects that require a reliable 3.76V high-capacity supply, this battery is perfect for powering portable devices such as flashlights, hobby transmitters, and receivers. This Li-ion battery also serves as an excellent replacement for standard non-rechargeable AA batteries, making it a cost-effective and efficient option for applications like RC transmitter/receiver remotes. The versatile lithium ion battery terminals are compatible with many adapters or holders, or they can be permanently soldered to your device’s wiring for seamless integration. Important Guidelines: Avoid Deep Discharge: Do not let the Li-ion battery drop below 2.5V under load. Initial Charge: Fully charge to 4.2V before the first use. Metal and Magnets: Keep any metal moving parts or magnets away from both the positive (top) and negative (bottom) contacts. Proper Installation: Never force the battery into its compartment. Battery Pairing: Do not mix old and new battery cells. Charger Quality: Always use a reliable, high-quality battery charger. Heat Exposure: Keep the battery away from high temperatures. Prevent Short-Circuiting: Avoid connecting the positive (top) and negative (bottom) terminals directly. Safe Storage: When not in use, store the battery in its plastic holder or another insulating container. Charging Voltage: Do not exceed 4.22V during charging—this is another reason to choose a quality charger. Supervised Charging: Never leave the battery charging unattended. Long-Term Storage: Do not store the battery fully charged for extended periods. Optimal Storage Conditions: Store in a cool, dry place at about 3.7V (the recommended storage charge). Post-Discharge Care: Recharge the battery as soon as possible after it has been discharged. User Knowledge: Ensure you are well-informed about proper Li-ion battery discharging, charging, assembly, handling, and storage before use. Features Form Factor: Cylindrical Battery Type: Lithium-Ion Performance: High efficiency with substantial capacity Design Feature: Flat top for compatibility with a wide range of devices

AA Zinc Panasonic Special Battery The Panasonic AA Zinc Special Battery is an affordable and dependable power source designed for everyday low-drain devices. Made with Panasonic’s trusted build quality, this zinc-carbon AA cell delivers consistent output for home and office essentials like wall clocks, TV remotes, torches, toys, and basic electronic gadgets. Perfect for users who need a cost-effective battery for regular use, it provides stable performance, a good shelf life, and easy installation. This makes it a practical choice for households, students, small businesses, and hobby enthusiasts who want reliable power without the high cost of premium batteries. Features: Zinc-carbon chemistry for economical, everyday use Designed for low-drain household and office devices Stable power output for clocks, remotes, toys, and torches Lightweight and easy to install in AA-compatible gadgets Reliable build quality from Panasonic for consistent performance Long shelf life for storage and backup power needs

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