3 Series 40A 11.1V 12.6V 18650 Lithium Battery Protection Board with Balance The 3 Series 40A Lithium Battery Protection Board (11.1V to 12.6V) with a Balance function is designed for drill motors, sprayers, LED lights, and low-power inverters. It supports auto recovery and features an integrated 10 low load resistance MOS tube. This board delivers a continuous discharge of 40A and a balanced current of 100mA. It is compatible with 3.6V and 3.7V lithium batteries (such as 18650, 26650, and polymer lithium types) with a charging voltage range of 16.8V to 18.1V. The board can handle a continuous charge current up to 20A and is ideal for devices with a start current below 80A and power requirements under 135W. Compact in size (46 x 60 x 3.4 mm), it can be easily installed on a battery pack or in tight spaces. Features 3S 11.1V to 12.6V 40A lithium battery protection board with auto recovery function. Compatible with 3.6V and 3.7V lithium batteries (including 18650, 26650, and polymer lithium batteries). Maximum continuous discharge current: 40A (reduce load current if cooling is inadequate). Maximum continuous charge current: 20A. Ideal for drills with a starting current under 80A and power requirements below 135W. Note For successful drill startup, use three 15C-20C power batteries or six 10C-15C power batteries (ordinary 18650 batteries cannot start the drill). Follow the wiring diagram carefully: 0V, 4.2V, 8.4V, 12.6V, 16.8V. Avoid intentional short circuits. When using a brush motor, connect a non-polar capacitor (withstand voltage >25V, capacity 10uF-100uF) across the motor’s positive and negative terminals to prevent damage from reverse spikes. For 4 battery groups in series, ensure each group has the same voltage. If not, charge each battery individually before using them in series. If any battery in the group drops voltage faster during discharge, it may be defective.

3-24V Active Piezo Electronic Buzzer with Continuous Sound Alarm Tone 3-24V Active Piezo Buzzer is a compact and reliable sound device designed for stable performance across a wide range of electronic applications. With a working voltage of 3–24V DC and a rated voltage of 12V DC, this piezo electronic buzzer delivers a loud 85–95dB continuous sound while consuming just 10mA of current. Built with an integrated design of a multivibrator, piezoelectric chip, and resonator, it ensures long service life and consistent operation. Lightweight and easy to install with a simple 2-wire connection, this piezo buzzer is ideal for both DIY and professional projects. It is widely used in computers, printers, alarms, copiers, timers, automotive electronics, telephones, and electronic toys, making it a versatile and dependable choice wherever a clear audio alert is needed. Features: Durable & Reliable – Built with stable construction for long service life and consistent performance. Wide Voltage Range – Operates smoothly on DC 3–24V with low power consumption (only 10mA). Loud & Clear Sound – Produces a strong 85–95 dB continuous alarm tone for effective alerts. Easy to Use – Features a complete drive circuit, works directly from a DC power source. Simple Installation – Comes with 2 mounting holes and 2-wire pigtails for quick setup. Versatile Applications – Suitable for alarms, computers, printers, copiers, electronic toys, automotive devices, timers, and DIY electronics.

3.3V Small Piezo Buzzer This is a 3.3V buzzer - a piezoelectric audio signalling device. It can be easily used with 9v Battery or any other Microcontroller. The items Listed here are for Hobby Electronics /DIY activities. The product is really good quality at all working and of high stability. The shell is of great strength and can protect the internal structure well. read our blog explaining How to use a Buzzer with Arduino , which provides a comprehensive guide on incorporating a buzzer into Arduino projects. It covers the basics of what a buzzer is, and how it works with Arduino. Features: Voltage: Operates at 3.3 volts. Type: Piezo buzzer. Sound Output: Produces a loud sound, ideal for alarms and notifications. Power Consumption: Low power consumption, making it efficient for battery-operated projects. Size: Compact and small, easy to integrate into various projects. Durability: Designed to be durable and reliable for long-term use. Applications: Suitable for electronic projects, alarms, timers, and other devices requiring an audible alert. Applications: Alarms: Used in security systems, fire alarms, and other alert systems. Timers: Integrated into kitchen timers, countdown timers, and other timing devices. Electronic Projects: Ideal for DIY electronics, Arduino projects, and educational kits. Notifications: Used in devices that require audible alerts, such as doorbells and reminder systems. Toys: Incorporated into electronic toys to produce sound effects. Medical Devices: Used in medical equipment for alerts and notifications. Automotive: Employed in car alarms and other vehicle alert systems.

3.6/3.7V Dual 18650 Rechargeable Lithium Battery Charger The Dual 18650 Rechargeable Lithium Battery Charger is an easy way to charge your 18650 batteries for cameras, camcorders, radios, and more. It’s wireless, has a U.S. plug, and can charge two batteries at the same time.

3.7V 1200mAh 18650 Battery The 18650 battery is a rechargeable lithium-ion battery with a capacity of 1200mAh and a voltage of 3.7V. It measures 18mm in diameter and 65mm in length and is commonly used in a variety of electronic devices such as flashlights, headlamps, doorbells, RC cars, and cameras. When selecting a 18650 battery, it is essential to ensure that it is compatible with your device and that it comes from a trustworthy brand to ensure safety and quality. This attention to detail guarantees both safety and quality. check out : 3.7V 2600mAh 18650 Battery Features: Small size and easy to use Great capacity and discharge rate Long life High energy density Long battery life Compact and powerful check out : Rechargeable 9 Volt battery MP 9v battery 300mAh Applications: Flashlights: The 3.7V 1200mAh 18650 Battery is commonly used in flashlights for reliable and long-lasting power. Headlamps: It provides a dependable power source for headlamps, ensuring consistent performance. Doorbells: The battery is suitable for powering electronic doorbells, offering a compact and powerful energy solution. RC Cars: It is commonly used in remote-controlled cars (RC cars) for efficient and reliable performance. Cameras: The battery is compatible with cameras, providing a stable power supply for photography equipment. Also check the 18650 2 CELL HOLDER available on the Iotcart website. It is a battery holder designed to accommodate two 18650 batteries, providing a total output voltage of 7.2v.

3.7V 1500mAh 18650 Battery This 3.7V cylindrical Li-ion rechargeable battery, known as the 18650 battery, offers a power current capacity of 1500mAh. With its reliable performance and long service life, it can be recharged repeatedly. The battery features plastic insulation on its outer part, while its inner part is constructed from high-carbon steel to provide protection against bursting and overheating. These characteristics make the 18650 li ion battery highly sought after due to its affordability and low maintenance requirements. If you seek a strong, reliable, and cost-effective battery with a capacity of 1500mAh, this option may be the ideal choice for you. Features: Pollution-free Long service life No memory effect High energy density Lightweight, small size Good consistency and low self-discharge. High working voltage for single battery cells. High energy density Low self-discharge rate

3.7V 1500mAH LiPo Rechargeable Battery Model UK-523450P Hey! Check out our 3.7V 1500mAh LiPo Rechargeable Battery Model UK-523450P. It's thin, light, and powerful, with a 1500mAh capacity. Perfect for all your gadgets like GPS devices, DVD players, iPods, tablets, MP4 players, and Bluetooth speakers. Whether you're working on DIY projects or need a reliable battery for industrial uses, mobile backups, or IoT devices, this battery is a great choice. Give it a try and keep your projects running smoothly!

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

3.7v 2500mah 18650 Li-Ion Battery 18650 battery is a Li-ion rechargeable battery with a 2500 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. This 3.7V 2500mAh 18650 lithium ion battery is safe to use, environment friendly and has long battery life. 18650 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 battery against overcharge, over-discharge of the pack, and to avoid over-current draw. This product is compatible with 18650 lithium battery Power Mobile Bank . You can use this battery with development boards like arduino , BBC Micro:Bit and M5 Stack Development Kits It is very easy to use the cell in any circuit, just solder the wires on the terminals or use 18650 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 gasses 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 product 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. Application: Can be used in Cordless Phones Can be used with Tablet, PC, GPS , iPod, DVD, MP4 Player, IoT etc. Mobiles backup power supply/Power bank

3.7V 2600mAh 18650 Battery - Any Colour The 18650 battery, with its original design and a capacity of 2600mAh, is a remarkable power source. It offers the convenience of being able to charge and discharge up to 1000 cycles without significant loss in battery capacity. With an emphasis on safety and environmental friendliness, this battery ensures a long-lasting lifespan. Featuring high energy density, the 18650 battery delivers continuous power to your device, making it an excellent choice for various applications. To ensure optimal performance and protection, it is recommended to use the battery with a dedicated protection circuit board. This circuit board safeguards the battery against overcharging, over-discharging, and excessive current draw. Incorporating the 18650 battery into your circuit is a straightforward process. You can easily solder wires onto the terminals or employ 18650 battery holders for effortless replacement of used cells. It is crucial to handle Li-ion batteries with care due to their volatility and flammability. Avoid rough handling and puncturing, as mishandling can lead to potential explosions and fires. Additionally, it is important not to overcharge or discharge the battery beyond its specified limits to prevent the accumulation of gases inside. Utilizing a protection board when utilizing Li-Ion cells is always advised. check out : 3.7V 1800mAh 18650 Battery Features: High energy density Excellent discharge characteristics Low internal resistance High flat voltage characteristics during strong current discharge Long-lasting standby charge Applications Cordless Phones Small DRONES Tablet PC GPS iPod, DVD, MP4 Player, etc. Mobiles backup power supply/Power bank Also check the 3.7V 1500mAh 18650 Battery , The battery is known for its reliable performance, long service life, and the ability to be recharged repeatedly. Also check 3.7V 2900mAh 18650 Battery . The battery is made with high-quality materials and boasts a long lifespan. It is also compatible with a variety of devices.