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Electronics, sensors, robotics kits, PC components, peripherals — everything Unik Systems carries, in one place.
Only 1 leftIOT Health Kit
MCU: ESP32 (good ADC/BLE). Sensors: pulse sensor/PPG module, body temp sensor, SpO2 module optional. Data logging: serial/cloud. Power: 5V USB. Educational use, non-clinical.
TC4056 Type-C 1A Lithium Battery Charging Module 5V USB-C 3.7V Li-ion LiPo Charger Board
[Li-ion Rechargeable Battery Charger, Lithium Battery Protection Board] Product Description The TC4056 Type-C Lithium Battery Charging Module is a compact, efficient, and reliable solution for charging 3.7V lithium-ion and lithium polymer batteries. Designed with a modern USB Type-C input, this module ensures easy compatibility with standard chargers and power sources. It uses a proven CC/CV (Constant Current / Constant Voltage) charging algorithm, which ensures safe charging, longer battery life, and stable performance. The module is ideal for DIY electronics, power banks, portable devices, and embedded systems. With intelligent charging management, automatic cut-off, and pre-charge functionality, the TC4056 module provides complete protection and efficient charging for your batteries. ⚡ Key Features 🔋 Safe & Efficient CC/CV ChargingProvides stable and optimized charging for lithium batteries. 🔌 Type-C USB InputEasy to use with mobile chargers, USB adapters, and power banks. ⚡ Stable 1A Charging CurrentDefault charging current of 1A for fast and reliable performance. 🔴🔵 LED Charging Indicators Red LED: Charging Blue LED: Fully Charged 🧩 Compact & Lightweight DesignPerfect for space-constrained and portable applications. 🛠️ Easy IntegrationSimple connections make it beginner-friendly and ideal for DIY use. 🔄 Smart Charging Features 🔋 Automatic Charge TerminationStops charging when current drops to 100mA after full charge, protecting battery health. 🔄 Auto Recharge FunctionCharging restarts automatically when battery voltage falls below 4.05V. 🪫 Pre-Charge ModeWhen battery voltage is below 2.9V, the module charges safely at 100mA. 📊 Specifications Specification Description Charging IC TC4056 Input Voltage 5V DC (Type-C USB) Charging Current 1A (default, adjustable) Battery Type 3.7V Li-ion / Li-Po Cut-off Voltage 4.2V Charging Method CC/CV Indicators Red (Charging), Blue (Full) 🔧 Applications 🔋 18650 Battery Charging🔌 DIY Power Banks🔧 Arduino / ESP32 Projects🎮 Portable Electronics💡 Rechargeable LED Projects📦 Backup Power Systems 📦 Package Includes 1 × TC4056 Type-C Lithium Battery Charging Module
R385 Pump 6-12V DC Mini Aquarium Water Pump
[DC Water Pump] Overview of this 6-12V DC Min R385 Mini Aquarium Pump Introducing the R385 Mini Aquarium Water Pump, your ideal solution for efficient water circulation in small tanks. With its compact design and versatile 6-12V DC power compatibility, this pump fits seamlessly into any aquarium setup. Enjoy steady water flow and maintain optimal conditions for your aquatic pets with ease. Designed with reliability in mind, the R385 Mini Water Pump ensures quiet operation while providing sufficient water movement. Its diaphragm base design delivers high performance & ensure your aquarium inhabitants thrive in a healthy environment. Say goodbye to stagnant water and hello to a dynamic aquatic eco system with this dependable mini pump. Whether you’re a seasoned hobbyist or a beginner, the R385 Mini Aquarium Pump offers comfort and peace of mind. Its user friendly design allows for easy installation and operation. And make it the perfect choice for aquarium enthusiasts of all levels. Enhance the beauty of your under water world with the reliable performance of the R385 Mini Water Pump. Features 6-12V DC power compatibility: The R385 Mini Aquarium Water Pump easily adapts to power sources from 6-12 volts. And also provide flexibility in setup options for your aquarium system. Compact design: With its sleek and space saving design, the R385 pump is perfect for mini aquarium setups. And also optimize space with smooth water circulation. Reliable diaphragm based design: Featuring a durable diaphragm based design. This R385 water pump also ensure smooth and trusted water flow & provide a healthy aquatic environment for fish and plants alike. Quiet operation: Engineered for quiet operation, this mini water pump decrease noise. And create a serene atmosphere for your aquatic companions to thrive without disturbance. User-friendly design: Whether you’re a beginner or an experienced hobbyist. This R385 Mini Aquarium Pump is also built for easy installation and operation. And also save you time and allow you to focus to create the perfect under water landscape. Specification Specification Details Model R385 Rated Voltage DC 6V to 12V Working Current 0.5A to 0.7A (Max) Power 4W-7W Max Lift 3m Max Suction 2m Max Water Temperature 80°C Pump Size 90mm x 40mm x 35mm (approx) Fluid 0-100°C Input/Output Tube Diameter Outer: 8.5mm, Inner: 6mm (approx) Max Current (Startup) Up to 2 Amps Life Up to 2500 Hours Maximum Flow Rate 1 – 3L/min Package Includes: 1 x R385 Pump 6-12V DC Mini Aquarium Water Pump
Type-C USB Input High Current 3A Polymer Ternary Lithium Battery Quick Fast Charging Board IP2312 CC/CV Mode 5V To 4.2V
[Lithium Battery Protection Board] Power your projects with the Type-C USB Input 3A Lithium Battery Fast Charging Board (IP2312) — a compact, high-efficiency charging solution designed for 3.7V lithium-ion and lithium polymer batteries. Built around the advanced IP2312 main control chip, this module delivers fast, stable, and intelligent charging using a full CC/CV (Constant Current / Constant Voltage) charging algorithm. It ensures optimal battery health, safety, and performance while supporting high current charging up to 3A, making it ideal for modern DIY electronics and portable power applications. The Type-C input interface provides universal compatibility with standard 5V USB power sources, while onboard indicator LEDs clearly display charging status. ⚠️ Note: Not suitable for 3.2V LiFePO4 (Lithium Iron Phosphate) batteries Key Features ⚡ High Current Fast Charging (Up to 3A)Supports rapid charging for lithium-ion/polymer batteries, reducing charging time significantly. 🔋 Advanced CC/CV Charging TechnologyEnsures safe and efficient charging with automatic switching between charging stages. 🔌 Type-C USB InputModern and widely compatible input interface (4.5V–5.5V), easy to power from adapters, power banks, or USB ports. 🧠 Smart Charging Management (IP2312 Chip)Automatically adjusts charging mode based on battery voltage for maximum safety and efficiency. 🔴🔵 LED Status Indicators Red LED: Charging in progress Blue LED: Fully charged 🛠️ Compact & Easy IntegrationSmall size makes it perfect for embedded systems, DIY battery packs, and portable devices. Charging Working Principle 🔹 Trickle Charging Mode (< 3V)When battery voltage is below 3V, the module charges with a safe low current (~100mA). 🔹 Constant Current Mode (> 3V)Once voltage exceeds 3V, it switches to constant current charging (up to 3A). 🔹 Constant Voltage Mode (~4.2V)As the battery approaches full charge, it maintains voltage while gradually reducing current. 🔹 Auto Cut-Off & Recharge Charging stops when current drops below 300mA Automatically resumes charging if voltage drops below 4.1V Specifications Specification Description Main Chip IP2312 Charging Mode CC/CV (Constant Current / Voltage) Input Voltage 4.5V – 5.5V (Type-C USB) Charging Current Up to 3A Battery Type 3.7V Li-ion / Li-Po Cut-off Voltage 4.2V / 4.35V Indicator LEDs Red (Charging), Blue (Full) Dimensions 34.5mm × 15mm Applications 🔋 DIY lithium battery packs🔌 Power bank projects🚗 Portable electronics & gadgets🔧 Arduino / ESP32 battery systems🔦 Rechargeable lighting systems📦 Embedded battery charging modules Package Includes 1 × Type-C USB 3A Lithium Battery Fast Charging Board (IP2312)
1S 2A 18650 (NMC) Lithium Battery BMS Round Shape With Nickel Strip
[Lithium Battery Protection Board] JLGW BMS NMC 1S 2A ROUND Hardware Product Data Sheet The BMS NMC 1S 2A ROUND (JLGW) is a high-precision, compact Battery Management System specially designed for single-cell NMC (Li-ion 3.7V) battery protection. This module is uniquely built in a round PCB layout, allowing it to seamlessly integrate into compact cylindrical battery designs or battery packs with limited space. Technical Specifications Parameter Specification Configuration 1S (Single 3.7V Li-ion Cell) Battery Chemistry NMC / Li-ion Nominal Voltage 3.7V Continuous Current 2A Overcharge Protection 4.25V ± 0.05V Over-discharge Protection 2.75V ± 0.05V Short Circuit Protection Yes (Instant cut-off) Overcurrent Protection Yes (~3A threshold) Working Temperature Range -20°C to +60°C PCB Shape & Size Round mini-PCBA with dual nickel strips Mounting Style Spot-Weld Tabs Key Features Space-Saving Round Design: Engineered for cylindrical cells and compact builds. Intelligent Safety Circuitry: Built-in MOSFETs and ICs protect against all common faults. 2A Output: Suited for low-drain applications like wearables and IoT gadgets. Nickel Strips Included: Pre-attached nickel makes welding and integration seamless. Single Cell Protection: Manages charge-discharge cycles efficiently for 1S packs. Ideal Applications LED Flashlights Cylindrical Battery Packs DIY Battery Projects Bluetooth Audio Devices Small IoT Systems Mini Power Banks The PCM NMC 01S/2A ROUND is a Battery Protection Circuit Module (PCM) designed for 1 series Nickel Manganese Cobalt (NMC) battery packs, supporting a 2A continuous discharge current. This module is suitable for low-power applications such as small energy storage systems, backup power solutions, and portable devices. The round designation indicates that the PCM is designed for round-cell configurations, which are commonly used in battery packs for various consumer electronics. It offers essential protection features, including overcharge, over-discharge, overcurrent, short circuit, and temperature protection, ensuring the safe and reliable operation of the battery. The PCM helps maintain the health of the cells by balancing the voltage across them, optimizing performance and extending the battery's lifespan. Package Includes: 1 x 1S 2A 18650 (NMC) Lithium Battery BMS Round Shape With Nickel Strip
1S 5A 18650 Lithium Battery Protection Board with Nickel Strip
[Lithium Battery Protection Board] JLGW BMS NMC 1S 5A Hardware Product Data Sheet The BMS NMC 1S 5A ROUND (JLGW) is a precision-built, space-saving single-cell protection circuit designed for NMC Lithium-ion 3.7V batteries. It features a compact round design with pre-attached nickel strips, making it the ideal choice for integrating into cylindrical and tightly packed battery modules. Technical Specifications Parameter Specification Cell Configuration 1S (3.7V Li-ion/NMC) Output Current 5A Overcharge Protection 4.25V ± 0.05V Over-discharge Protection 2.75V ± 0.05V Overcurrent Threshold ~6A Short Circuit Protection Yes (Auto recovery / Cut-off) PCB Format Round with Nickel Strip Connection Method Spot Welding Operating Temp -20°C to +60°C Dimensions (approx) Ultra compact for 18650/21700 formats Key Features Compact Round PCB: Optimized for cylindrical cell integration and small enclosures. 5A Rated Discharge: Perfect for devices needing higher current without bulky BMS. Comprehensive Protection: Prevents over-voltage, under-voltage, short circuits, and overcurrent. Pre-welded Nickel Strips: Enables faster and safer battery pack assembly. Plug-and-Play Design: Simple installation without extra connectors. Applications Digital Cameras Handheld Medical Instruments GPS Modules Custom Battery Packs Tactical Flashlights Portable Gadgets The PCM NMC 01S/5A (JLGW) is a Battery Protection Circuit Module (PCM) designed for 1 series Nickel Manganese Cobalt (NMC) battery packs, supporting a 5A continuous discharge current. This module is suitable for low to moderate power applications, such as small energy storage systems, backup power solutions, and portable electronics. It provides essential protection features, including overcharge, over-discharge, overcurrent, short circuit, and temperature protection, ensuring the safe and reliable operation of the battery. The JLGW designation refers to the specific manufacturer or design. The PCM helps maintain battery health by balancing the voltage across cells, optimizing performance, and extending the battery pack’s lifespan. Wiring Instructions: B+ : Connected to the battery positive. B- : Connected battery negative. P+ : For the battery pack output-input positive P- : For the battery pack output-input negative Package Includes: 1 x 1S 5A 18650 Lithium Battery Protection Board