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Electronics, sensors, robotics kits, PC components, peripherals — everything Unik Systems carries, in one place.
Only 1 leftPrecision Screwdriver Set (6 piece)
PH0, PH1, flat 1.4/2/2.4/3mm precision screwdriver set.
Out of stockPrecision Screwdriver Set 115-in-1
Phone/laptop/console repair kit, 115 bits, magnetic, anti-static tweezers + pry tools.
Out of stockRechargeable Electric Precision Screwdriver
USB-C rechargeable mini electric driver, 24 bits, torque-controlled. Phone repair.
5.5 × 2.1mm DC Power Jack Plug with 2-Pin Screw Terminal
[Power Connector] 🔌 5.5 × 2.1mm DC Power Jack Plug with 2-Pin Screw Terminal (Male / Female) Standard DC Barrel Connector • 2-Pin Screw Terminal • Solder-Free Installation • Up to 5A Current Rating The 5.5 × 2.1mm DC Power Jack Plug with 2-Pin Screw Terminal is a convenient and reliable connector designed for quick and secure DC power connections without soldering. Compatible with the industry-standard 5.5mm outer diameter and 2.1mm inner diameter barrel connector, it is widely used in CCTV camera installations, LED lighting, routers, power adapters, and DIY electronics projects. Available in Male and Female variants, this connector features a 2-pin screw terminal that allows wires to be connected easily using a screwdriver. The clearly marked positive (+) and negative (–) terminals help prevent wiring errors, making installation simple for both professionals and hobbyists. Manufactured with a durable ABS plastic housing and nickel-plated metal contacts, this connector provides reliable electrical performance, corrosion resistance, and long service life. Its reusable design makes it ideal for prototyping, repairs, and permanent installations. ⭐ Features Standard 5.5 × 2.1mm DC barrel connector Available in Male and Female versions 2-pin screw terminal for quick wire connection No soldering required Clearly marked positive (+) and negative (–) terminals Supports up to 5A current Durable ABS plastic housing Nickel-plated contacts for improved conductivity Secure and reusable connection Easy plug-and-play installation Suitable for 12V and 24V DC systems Ideal for DIY electronics and repair work 📋 Technical Specifications Product Type: DC Power Jack Plug with Screw Terminal Connector Type: Male / Female Barrel Size: 5.5mm (Outer) × 2.1mm (Inner) Terminal Type: 2-Pin Screw Terminal Rated Voltage: 0–30V DC Recommended Operating Voltage: 12V / 24V DC Maximum Current: Up to 5A Housing Material: ABS Plastic Contact Material: Nickel-Plated Metal Mounting Type: Inline Cable Mount Wire Compatibility: Up to 22 AWG Polarity Marking: Positive (+) / Negative (–) Operating Temperature: -20°C to +80°C 🔧 Applications Suitable for: CCTV Camera Power Connections LED Strip Lighting LED Sign Boards DC Power Adapters Routers and Modems Arduino Projects Raspberry Pi Projects DIY Electronics Battery Packs Power Distribution Systems Industrial Control Equipment Testing and Prototyping Electronic Repairs Low-Voltage DC Power Systems 📦 Package Includes 1 × 5.5 × 2.1mm DC Power Jack Plug with 2-Pin Screw Terminal (Male or Female variant as selected) ⚠️ Note Please select the required Male or Female connector variant before ordering. Verify polarity before connecting power to avoid damage to connected devices. Suitable for low-voltage DC applications only. Product appearance may vary slightly depending on the manufacturing batch.
DMEGC INR18650-29E 3.7V 2900mAh Li-Ion Battery
[Lithium Battery Cell] DMEGC INR18650-29E 3.7V 2900mAh Li-Ion Battery The DMEGC Cylindrical Lithium-ion 18650 Cell is a high-performance, rechargeable lithium-ion battery with a 2900mAh capacity and a 3.65V nominal voltage. Designed for high energy density, long cycle life, and stable performance, this cell is ideal for portable electronics, power tools, electric vehicles (EVs), energy storage systems, and custom battery packs. You can check our others lithium cells click here. Product Data Sheet (INR18650-29E) Key Features High Capacity & Voltage: 3.65V nominal voltage with a 2900mAh capacity for extended usage. Long Cycle Life: Over 1,000 charge cycles, ensuring durability and cost-effectiveness. Fast Charging & Discharging: Supports high charge/discharge currents for high-performance applications. Stable Performance: Low internal resistance for efficient power output. Enhanced Safety: Built-in protection against overcharging, over-discharging, and short circuits. Eco-Friendly: Free from toxic heavy metals like lead and cadmium. Technical Specifications Model: 18650 Nominal Voltage: 3.65V Nominal Capacity: 2900mAh Minimum Capacity: 2750mAh Charge Voltage: 4.2V Discharge Cutoff Voltage: 2.5V Cycle Life: >1,000 cycles (80% DOD) Max Charge Current: 1C (2.6A) Max Discharge Current: 2C (5.2A) Dimensions: 18mm x 65mm Weight: Approximately 47g Applications The DMEGC 2900mAh 18650 cell is widely used in various applications: Portable Electronics & Power Banks Perfect for laptops, flashlights, power banks, and other consumer electronics, ensuring long-lasting power. Power Tools & DIY Battery Packs Provides consistent high power output, making it ideal for cordless drills, electric screwdrivers, and other tools. Electric Vehicles (EVs) & E-Bikes Offers a stable and high-energy output for electric bicycles, scooters, and lightweight electric vehicles. Energy Storage Systems Can be used in solar energy storage systems, home battery banks, and off-grid applications. Why Choose DMEGC Cylindrical Lithium-ion Cell 2900mAh 3.65V 18650? Superior Lifespan: Long cycle life compared to standard lithium-ion cells. Enhanced Safety: No risk of thermal runaway, explosion, or fire. Energy Efficient: Low self-discharge rate and high efficiency. Environmentally Friendly: 100% recyclable and non-toxic materials. Discharge Cut-off Voltage: 2.5V Package Includes: 1 x DMEGC INR18650-29E 3.7V 2900mAh Li-Ion Battery
DMEGC INR21700-45E 3.7V 4500mAh Li-Ion Battery
[Lithium Battery Cell] DMEGC Cylindrical Lithium-ion Cell 4500mAh 3.7V 21700 – High Capacity & Reliable Power The DMEGC Cylindrical Lithium-ion 21700 Cell is a high-performance, rechargeable lithium-ion battery with a 4500mAh capacity and a 3.7V nominal voltage. Designed for high energy density, long cycle life, and stable performance, this cell is ideal for portable electronics, power tools, electric vehicles (EVs), energy storage systems, and custom battery packs. You can check our others lithium cells click here. Product Data Sheet (INR 21700-45E) Key Features High Capacity & Voltage: 3.7V nominal voltage with a 4500mAh capacity for extended usage. Long Cycle Life: Over 1,000 charge cycles, ensuring durability and cost-effectiveness. Fast Charging & Discharging: Supports high charge/discharge currents for high-performance applications. Stable Performance: Low internal resistance for efficient power output. Enhanced Safety: Built-in protection against overcharging, over-discharging, and short circuits. Eco-Friendly: Free from toxic heavy metals like lead and cadmium. Technical Specifications Model: 21700 Nominal Voltage: 3.7V Nominal Capacity: 4500mAh Minimum Capacity: 4400mAh Charge Voltage: 4.2V Discharge Cut-off Voltage: 2.5V Cycle Life: >1,000 cycles (80% DOD) Max Charge Current: 1C (4.5A) Maximum Discharge Current: 2C (9.0A) Dimensions: Diameter: 21mm x 70mm Weight: Approximately 70g Applications The DMEGC 4500mAh 21700 cell is widely used in various applications: Portable Electronics & Power Banks Perfect for laptops, flashlights, power banks, and other consumer electronics, ensuring long-lasting power. Power Tools & DIY Battery Packs Provides consistent high power output, making it ideal for cordless drills, electric screwdrivers, and other tools. Electric Vehicles (EVs) & E-Bikes Offers a stable and high-energy output for electric bicycles, scooters, and lightweight electric vehicles. Energy Storage Systems Can be used in solar energy storage systems, home battery banks, and off-grid applications. Why Choose DMEGC Cylindrical Lithium-ion Cell 4500mAh 3.7V 21700? Superior Lifespan: Long cycle life compared to standard lithium-ion cells. Enhanced Safety: No risk of thermal runaway, explosion, or fire. Energy Efficient: Low self-discharge rate and high efficiency. Environmentally Friendly: 100% recyclable and non-toxic materials. Package Includes: 1 x DMEGC INR21700-45E 3.7V 4500mAh Li-Ion Battery
DMEGC INR18650-32E 3.7V 3200mAh 3C Li-Ion Battery
[Lithium Battery Cell] DMEGC Cylindrical Lithium-ion Cell 3200mAh 3.7V 18650 – High Performance & Reliable Power The DMEGC Cylindrical Lithium-ion 18650 Cell is a high-performance, rechargeable lithium-ion battery with a 3200mAh capacity and a 3.7V nominal voltage. Designed for high energy density, long cycle life, and stable performance, this cell is ideal for portable electronics, power tools, electric vehicles (EVs), energy storage systems, and custom battery packs. You can check our others lithium cells click here. Product Data Sheet (INR18650-32E) Key Features High Capacity & Voltage: 3.7V nominal voltage with a 3200mAh capacity for extended usage. Long Cycle Life: Over 1,000 charge cycles, ensuring durability and cost-effectiveness. Fast Charging & Discharging: Supports high charge/discharge currents for high-performance applications. Stable Performance: Low internal resistance for efficient power output. Enhanced Safety: Built-in protection against overcharging, over-discharging, and short circuits. Eco-Friendly: Free from toxic heavy metals like lead and cadmium. Technical Specifications Model: 18650 Nominal Voltage: 3.7V Nominal Capacity: 3200mAh Minimum Capacity: 3100mAh Charge Voltage: 4.2V Discharge Cut-off Voltage: 2.5V Cycle Life >1,000 cycles (80% DOD) Maximum Discharge Current: 1C (3.2A) Maximum Discharge Current: 2C (6.4A Dimensions: 18mm x 65mm Weight: Approximately 48g Applications The DMEGC 3200mAh 18650 cell is widely used in various applications: Portable Electronics & Power Banks Perfect for laptops, flashlights, power banks, and other consumer electronics, ensuring long-lasting power. Power Tools & DIY Battery Packs Provides consistent high power output, making it ideal for cordless drills, electric screwdrivers, and other tools. Electric Vehicles (EVs) & E-Bikes Offers a stable and high-energy output for electric bicycles, scooters, and lightweight electric vehicles. Energy Storage Systems Can be used in solar energy storage systems, home battery banks, and off-grid applications. Why Choose DMEGC Cylindrical Lithium-ion Cell 3200mAh 3.7V 18650? Superior Lifespan: Long cycle life compared to standard lithium-ion cells. Enhanced Safety: No risk of thermal runaway, explosion, or fire. Energy Efficient: Low self-discharge rate and high efficiency. Environmentally Friendly: 100% recyclable and non-toxic materials. Package Includes : 1 x DMEGC INR18650-32E 3.7V 3200mAh 3C Li-Ion Battery
2600mAh DMEGC INR18650-26E 3.7V Li-ion Battery
[Lithium Battery Cell] DMEGC Cylindrical Lithium-ion 18650 Cell 2600mAh DMEGC INR18650-26E 3.7V Li-ion Battery, The DMEGC Cylindrical Lithium-ion 18650 Cell is a high-performance, rechargeable lithium-ion battery with a 2600mAh capacity and a 3.65V nominal voltage. Designed for high energy density, long cycle life, and stable performance, this cell is ideal for portable electronics, power tools, electric vehicles (EVs), energy storage systems, and custom battery packs. You can check our others lithium cells click here. Product Data Sheet (INR18650-26E) Key Features High Capacity & Voltage: 3.65V nominal voltage with a 2600mAh capacity for extended usage. Long Cycle Life: Over 1,000 charge cycles, ensuring durability and cost-effectiveness. Fast Charging & Discharging: Supports high charge/discharge currents for high-performance applications. Stable Performance: Low internal resistance for efficient power output. Enhanced Safety: Built-in protection against overcharging, over-discharging, and short circuits. Eco-Friendly: Free from toxic heavy metals like lead and cadmium. Technical Specifications Model: 18650 Nominal Voltage: 3.65V Nominal Capacity: 2600mAh Minimum Capacity: 2500mAh Charge Voltage: 4.2V Discharge Cutoff Voltage: 2.5V Cycle Life: >1,000 cycles (80% DOD) Max Charge Current: 1C (2.6A) Max Discharge Current: 2C (5.2A) Dimensions: 18mm x 65mm Weight: Approximately 45g Applications The DMEGC 2600mAh 18650 cell is widely used in various applications: Portable Electronics & Power Banks Perfect for laptops, flashlights, power banks, and other consumer electronics, ensuring long-lasting power. Power Tools & DIY Battery Packs Provides consistent high power output, making it ideal for cordless drills, electric screwdrivers, and other tools. Electric Vehicles (EVs) & E-Bikes Offers a stable and high-energy output for electric bicycles, scooters, and lightweight electric vehicles. Energy Storage Systems Can be used in solar energy storage systems, home battery banks, and off-grid applications. Why Choose DMEGC Cylindrical Lithium-ion Cell 2600mAh 3.65V 18650? Superior Lifespan: Long cycle life compared to standard lithium-ion cells. Enhanced Safety: No risk of thermal runaway, explosion, or fire. Energy Efficient: Low self-discharge rate and high efficiency. Environmentally Friendly: 100% recyclable and non-toxic materials. Package Includes:- 1x DMEGC INR 18650-26E lithium-ion rechargeable battery.
Out of stockMale + Female 2.1*5.5mm for DC Power Jack Adapter Connector Plug For CCTV Camera
[Power Connector] This is Male + Female 2.1*5.5mm for DC Power Jack Adapter Connector Plug For CCTV Camera. Simple & Professional appearance for power cabling. Easier for camera installation saves time and assures secure cable connection. No electrical tap, No splicing, no crimping, but only a small screwdriver. Features: It is a perfect solution for those who want to make custom power cable. This CCTV Camera DC Power Connector will provide a great connection. Female Jack Description: 5.5mm x 2.1mm Female power plug connector. The external diameter of the plug: 5.5mm. The internal diameter of the plug: 2.1mm. Dimension: 38mm(L) x 14mm(W) x 13mm(H). Male jack Description: 2.1 x 5.5mm CCTV Camera DC Power Plug Connector. DC Power Plug with plastic construction and strain relief. This 2.1 x 5.5mm Power Plug features one power connector end DC plug male to another end terminal for CCTV camera connected. The internal diameter of the plug: 2.1mm The external diameter of the plug: 5.5mm Package Includes : 1 x Male + Female 2.1*5.5mm for DC Power Jack Adapter Connector Plug For CCTV Camera