3pcs battery

3Pcs E1A1 ABS Battery Box Holder For 4 x 18650 Description: This item is Battery Box Holder DIY power supply Easy installation Battery type: 18650 Connection: soldering Application: You can use this case with your own battery to form power system supply. Case for rechargeable battery. Simple DIY recharge power supply Materil: ABS Color: Black Package included: 3 x E1A1 ABS Battery Box Holder

3Pcs 3V To 5V 1A USB Charger DC-DC Converter Step Up Boost Module Features: Module uses the Taiwan production boost chip, high efficiency (up to 92%), plus built-in over-current protection chip, can be more good to protect the module and use the device after the class. Module with undervoltage protection, undervoltage protection into state below 2.5V, can be more better protect the battery, to avoid excessive discharge. Module can modify the fixed resistor adjusts the output voltage can be adjusted up to 12V output, but to ensure that the output power of less than 5W. This module uses TDK multilayer ceramic capacitors as main filter capacitor, the output ripple can be as low as 20mV (5V1A output case)! This module uses a standard USB interface, you can use all universal USB charging mobile phones, MP3, MP4 and other equipment, the perfect support for IPHONE and other mobile phone. Specification: Module properties: Non-isolated step-up module (BOOST) Input voltage: 2.5-6V Output voltage: 4-12 V(Adjustable, the default 5 v) Output current: 1000mA (Max) Efficiency: 92%(Max) (the higher the input voltage, the higher the efficiency) Switching frequency: 1MHz Output ripple: 20mV (MAX) Operating temperature: Industrial (-40°c to +85°c) Voltage regulation: ±2.5% Short circuit protection: None (please use the lithium battery with protection) Input: IN + postive, IN - negative Output: USB output Size: 3 x 1.3 x 0.8 cm Application: This module can be used for DIY mobile power output, enabling single or two ordinary lithium battery to 5V boost to the mobile phone or PSP device charging. DIY a mobile power supply, only need one battery, you can output 5V voltage for your phone, MP3, MP4, PSP charger, very easy. In order to power your electronic devices when your device needs 5V power supply, when you only have lithium battery, this module can be directly step-up to 5V, solve your problems. Note: This module is a fixed 5V output module Modules indicated above IN - (negative input), IN + (positive input), OUT-(negative output), OUT + (positive output) must be connected correctly, otherwise it may cause damage to the module This module has an LED light, when the charge when the LED lights can be used as indicator Package included: 3 x USB boost module

3pcs 3.7V Lithium Battery Protection Board 18650 Polymer Battery Protection 6-12A 6MOS Package contains 1 X item of the smallest listed variant.

3Pcs DIY 4 Slot 18650 Battery Holder With 8 Leads Feature: Input Voltage 3.7V Output Voltage 14.8V Package included: 3 x DIY 4 Slot 18650 Battery Holder With 8 Leads

3pcs DIY 12V 8 x AA Battery Holder Box Case With Leads Switch Feature:Material: ABS impact resistant materialHardware: Nickel-plated steelSpring: Nickel-plated steelRivet: NoneWire: 1007 # 26AWGColor: BlackPackage included:3 x DIY 12V 8 x AA Battery Holder Case Box With Leads Switch

3Pcs RobotDyn TP4056 MicroUSB 18650 Li-Ion Battery Charger Module

3pcs 4S 14.8V 16.8V Lithium Battery Protection Board For Power Tools Drill Straight Package contains 1 X item of the smallest listed variant.

3pcs 3.7V To 5V 1A 2A Boost Module DIY Power Bank Mainboard Built In 18650 Lithium Battery

3pcs 20mm Shaft Length Green and Black Luminous Hands DIY Quartz Clock Wall Mov Package weight: 0.09 kg Feature: Material: Plastic + Aluminum Color: Green & Black Luminous Hands, Black Case Mode: Silent Mode Easy and simple design Great for repairing, replacing or making a clock Powered by 1 AA battery (not included) Dimension: Host size: About 55 x 55 x 16 mm / 2.16 x 2.16 x 0.63 inch Second hand length: About 133 mm / 5.23 inch Minute hand length: About 96 mm / 3.77 inch Hour hand length: About 68 mm / 2.67 inch Shaft length: 20mm /0.79 inch Package includes: 3 x Quartz clock movement Click here for more deals 3pcs 20mm Shaft Length Green and Black Luminous Hands DIY Quartz Clock Wall Mov 3pcs 20mm Shaft Length Green and Black Luminous Hands DIY Quartz Clock Wall Mov

3Pcs Logging Recorder Shield Data Logger Module For Arduino UNO SD Card Features: SD card interface works with  FAT16 or FAT32 formatted cards. 3.3V level shifter circuitry prevents damage to your SD card. Real time clock (RTC) keeps the time going even when the Arduino is unplugged. Included libraries and example code for both SD and RTC, means you can get going quickly. Prototyping area for soldering connectors, circuitry or sensors. Onboard 3.3V regulator is both a reliable reference voltage and also reliably runs SD cards that require a lot of power to run. Works with Arduino UNO,  Duemilanove, Diecimila, Leonardo or ADK/Mega R3 or higher. ADK/Mega R2 or lower are not supported. Specification: Size: 68 x 53 x 23mm (approx) Regulator voltage: 3.3V Battery: CR1220 3V Note: This product has red and blue color, the color is random delivery. Package included: 3 x Data logger module 3 x Lithium cell

3Pcs 3.3V 8MHz ATmega328P-AU Pro Mini Microcontroller Board For Arduino Description: The Pro Mini is a microcontroller board based on the ATmega328 for Arduino. With 14 digital input / output pins (of which 6 can be used as PWM outputs), 8 analog inputs, an on-board resonator, a reset button, and holes for mounting pin headers. Six pin header can be connected to an FTDI cable to provide USB power and communication to the board. Feature: Using ATmel Atmega328P-AU MCU TTL level serial port transceiver RX / TX Six PWM ports D3, D5, D6, D9, D10, D11 Supporting serial download Supporting external DC 2.4V ~ 12V power Supporting 12V (or below) battery power Specification: Microcontroller: ATmega328 Operating Voltage: 3.3V Input Voltage: 3.35V ~ 12V Digital I/O Pins: 14 (of which 6 provide PWM output) Analog Input Pins: 8 DC Current Per I/O Pin: 40mA Flash Memory: 32KB (of which 2KB used by bootloader) SRAM: 1KB EEPROM: 512bytes Clock Speed: 8MHz Size: 33.3 x 17.6mm Package included: 3 x 3.3V 8MHz Pro Mini(With Pins)

3Pcs DC-DC 1V-5V To 5V 500mA Boost Converter Step Up Power Module Feature: Input voltage of DC 1V~5V, output 5V DC voltage is stable, the input to the output current of 500~600MA with two AA batteries, a single AA battery power supply output current 200 ma about for mobile phones camera, single-chip, digital products. High conversion efficiency up to 96% Ultra-small size, installed in a variety of small equipment With working lights Specification: Input voltage: DC 1V~5V Output voltage: DC 5V Output Current: 500mA PCB size: 17.55mm*25.22mm*5.85 mm En bloc Size: 17.55*32.53*8.3mm Weight: 14g Note: No USB port. Package included: 3 x Boost Converter Power Module

Buy 3pcs 18650 Battery Box Rechargeable Battery Holder Board with Switch for 2x18650 for R210.00

Buy 3pcs 18650 Battery Box Rechargeable Battery Holder Board with Switch for 2x1865 for R197.37

Buy 3pcs LilyPad Coin Cell Battery Holder CR2032 Battery Mount Module for R191.00

Buy 3pcs 3S Lithium Battery Pack Power Indicator Board Electric Vehicle Battery Power for R210.00

Buy 3pcs 12-60V Car Lead Acid Battery Charge Level Indicator Battery Tester Lithium for R210.75

Buy 3Pcs Waterproof 12-60V Electric Universal Battery Voltage Meter Battery Power I for R351.57

Buy 3pcs 3.7V Lithium Battery Protection Board 18650 Polymer Battery Protection 6-12A 6MOS for R190.91

Buy 3pcs Dual USB 12V To 5V Step-down Module Battery Indicator Battery Voltage Display Meter for R359.57

Buy 3pcs Solar Charge Controller Module Lithium Battery Lead Acid Battery Charger B for R438.67

Buy 3pcs DC 9V Battery Button Power Plug Mega 2560 1280 UNO R3 132 9V Battery Buckl for R190.00

Buy 3pcs GY-6H 12V 24V 36V 48V Lead Acid Battery 2-15S Lithium Battery Capacity Indicator Voltmeter for R333.31

Buy 3pcs Wemos Battery Shield V1.2.0 For Wemos D1 Mini Single Lithium Battery Charging & Boost Module for R252.00

Buy 3pcs DC 9V Battery Button Power Plug Mega 2560 1280 UNO R3 132 9V Battery Buckle T Type for R177.00

Buy 3Pcs DC 24V 48V 72V Car Lead Acid Battery Capacity Indicator 10 Segment Digital Lithium Battery Char for R208.00

Scope: Mainly used in battery (9V or 12V) voltage monitoring, simple and practical, support sound and light alarm. Features: When the buzzer low voltage will "DiDiDi" sounds and the red LED lights up, when the battery voltage rise above to the set value, buzzer will stop alarm. Size: 2.9 x 3 cm The main chip: LM358 9V Battery: When a battery over-discharge (battery voltage drops below about 8V), the red lights and the buzzer calling to achieve sound and light alarm, to achieve control battery discharge status, prevent over-discharge battery, and damage battery; 12V Battery: When a battery over-discharge (battery voltage less than 10.4V), the red lights and the buzzer calling to achieve sound and light alarm, to achieve control battery discharge status, prevent over-discharge battery, and damage battery; Advantages: With a sound and light alarm, simple and practical. The module input with reverse protection, if reverse polarity power input will not burn. But without overvoltage protection, if the input exceeds 15V, the chip above the module will burn out. Adjustment method: 9V Battery: Input 9V, the LM358 voltage adjustment between 2 feet and 4 feet to about 5.78V, the alarm voltage is 8V (we has set it before shipment, so you don't need to adjust it again). Clockwise adjustment, 2 feet and 4 feet voltage is reduced, the sensitivity increased. 12V Battery: Input 12V, The LM358 voltage adjustment between 2 feet and 4 feet to about 6.05V, the alarm voltage is 10.4V (we has set it before shipment, so you don't need to adjust it again). Clockwise adjustment, 2 and 4 feet voltage is reduced, the sensitivity increased. Package includes: 3 x Battery Over-discharge Protection Module

Specifications: · 300W 8A 7-32V to 0.8-28V DC CC CV Buck Step-Down Converter Power Supply Step Down Module Adjustable Voltage Regulator LED Driver · High-power, constant current LED driver · Battery charger · Vehicle-mounted power supply · Low voltage system power supply · Non-isolated step-down CC CV Buck module with on-board LED load indicator · Input voltage: DC 7-32 V · Output Voltage: DC 0.8-28 V (Adjustable) · Output Current: 8A (MAX), more than 60Deg please strengthen heatsink · Continuous Current Range: 0.2-8A Adjustable · Output Power: 300W (MAX) · Conversion efficiency: 95% (more input voltage, more efficiency) · Output ripple: 50mV · Working Temperature: industrial (- 40 ° c to +85 °c) (environmental temperature, more than 40 degrees, please reduce power to use, or - enhance cooling) · No-load current: 20mA (input 24V,Output 12V for reference) · Voltage regulation: ± 1% · Load regulation: ± 1% · Dynamic response speed: 200uS 5% · Short circuit protection: YES · Input Reverse protection: No (please comply with a reverse protection or connect a diode at input parts.) · Size: 65 x 47 x 22 mm · On-board LED load indications: red = load present (eg. 'battery charging'), green = no load (eg. 'battery charged' or output disconnected) Features: 1. Fixed turn lamp current is 0.1 times the current value(Used to identify whether the battery is fully charged When charging). 2. Made from a dedicated benchmark IC and high-precision current sensing resistor, proving a more stable constant current, (when 20°C to 100°C constant current 1A, temperature drift less than 1%). Particularly suitable for LED driver. 3. High output current, the max output current can reach 8A. 4. Four high frequency capacitance, can lower output ripple, enhance the work stabilization. 5. Double heat sink design. MOS schottky diode independent heat sink,which heat dissipation is good, and won't affect each other. 6. Using large size Sendust Core and double pure copper wiring, improve working efficiency, reduce fever. 7. 3296 multiturn potentiometer,high accuracy voltage and current regulation, good stability. 8. Double color lamp, working condition be clear at a glance 9. Voltage and current are adjustable,wich effect is good. Applications: 1. High-power LED driver. 2. Lithium battery(or lead accumulator) charge. 3. Vehicle-mounted power supply. 4. Low voltage system power supply. 5. 6V, 12V, 14V, 24V battery charge. 6. On-board laptop power supply. 7. regulated power supply. 8.Low voltage power supply system. Module adjustment: ￢ﾀﾋ 1. When the module output voltage can not be adjusted (the output voltage is always equal to the input voltage) Please adjust the potentiometer counterclockwise 20 laps (20 turns) or more till it works.￢ﾀﾋ 2. Turn trimmers CLOCKWISE to INCREASE, ANTICLOCKWISE to DECREASE. 3. When adjust the blue potentiometer,please use a multimeter to monitor the voltage 4. The trimmer nearest the voltage output adjusts the output CURRENT (CC) 5. The trimmer nearest the voltage input adjusts the output VOLTAGE (CV) Charger application - intructions: 1. First determine the float voltage and charging current required by the battery to be charged (the ‘target battery'). The target battery disconnected from the module output, apply a voltage of 7V - 32V to the module input, being sure to observe correct polarity. 2. Using the CV trimmer, adjust the output voltage to about 5V. 3. Switch your multimeter into its 10A current scale and measure the module's short-circuit output current. Turn the CC trimmer to adjust the current to the charging current required by target battery. 4. Using the CV trimmer, adjust the module's output voltage to the float voltage required by the target battery. 5. Connect the target battery to the module output, observing correct polarity. Charging of the battery should commence ￢ﾀﾋ Constant current LED Driver Application - Instructions: 1. First determine the operating current and maximum operating voltage of the LED you need to drive. 2. With the CV trimmer, adjust the output voltage to about 5V. 3. Switch your multimeter into its 10A current scale and measure the module's short-circuit output current. Turn the CC trimmer to adjust the current to the operating current of your LED. 4. Adjust the CV trimmer to make the output voltage reach the maximum LED operating voltage. 5. Connect LED, test. Package included: 3 x 8A 300W buck adjustable power supply module

Specifications: · 300W 8A 7-32V to 0.8-28V DC CC CV Buck Step-Down Converter Power Supply Step Down Module Adjustable Voltage Regulator LED Driver · High-power, constant current LED driver · Battery charger · Vehicle-mounted power supply · Low voltage system power supply · Non-isolated step-down CC CV Buck module with on-board LED load indicator · Input voltage: DC 7-32 V · Output Voltage: DC 0.8-28 V (Adjustable) · Output Current: 8A (MAX), more than 60Deg please strengthen heatsink · Continuous Current Range: 0.2-8A Adjustable · Output Power: 300W (MAX) · Conversion efficiency: 95% (more input voltage, more efficiency) · Output ripple: 50mV · Working Temperature: industrial (- 40 ° c to +85 °c) (environmental temperature, more than 40 degrees, please reduce power to use, or - enhance cooling) · No-load current: 20mA (input 24V,Output 12V for reference) · Voltage regulation: ± 1% · Load regulation: ± 1% · Dynamic response speed: 200uS 5% · Short circuit protection: YES · Input Reverse protection: No (please comply with a reverse protection or connect a diode at input parts.) · Size: 65 x 47 x 22 mm · On-board LED load indications: red = load present (eg. 'battery charging'), green = no load (eg. 'battery charged' or output disconnected) Features: 1. Fixed turn lamp current is 0.1 times the current value(Used to identify whether the battery is fully charged When charging). 2. Made from a dedicated benchmark IC and high-precision current sensing resistor, proving a more stable constant current, (when 20°C to 100°C constant current 1A, temperature drift less than 1%). Particularly suitable for LED driver. 3. High output current, the max output current can reach 8A. 4. Four high frequency capacitance, can lower output ripple, enhance the work stabilization. 5. Double heat sink design. MOS schottky diode independent heat sink,which heat dissipation is good, and won't affect each other. 6. Using large size Sendust Core and double pure copper wiring, improve working efficiency, reduce fever. 7. 3296 multiturn potentiometer,high accuracy voltage and current regulation, good stability. 8. Double color lamp, working condition be clear at a glance 9. Voltage and current are adjustable,wich effect is good. Applications: 1. High-power LED driver. 2. Lithium battery(or lead accumulator) charge. 3. Vehicle-mounted power supply. 4. Low voltage system power supply. 5. 6V, 12V, 14V, 24V battery charge. 6. On-board laptop power supply. 7. regulated power supply. 8.Low voltage power supply system. Module adjustment: ??br /> 1. When the module output voltage can not be adjusted (the output voltage is always equal to the input voltage) Please adjust the potentiometer counterclockwise 20 laps (20 turns) or more till it works.??br />2. Turn trimmers CLOCKWISE to INCREASE, ANTICLOCKWISE to DECREASE. 3. When adjust the blue potentiometer,please use a multimeter to monitor the voltage 4. The trimmer nearest the voltage output adjusts the output CURRENT (CC) 5. The trimmer nearest the voltage input adjusts the output VOLTAGE (CV) Charger application - intructions: 1. First determine the float voltage and charging current required by the battery to be charged (the ‘target battery'). The target battery disconnected from the module output, apply a voltage of 7V - 32V to the module input, being sure to observe correct polarity. 2. Using the CV trimmer, adjust the output voltage to about 5V. 3. Switch your multimeter into its 10A current scale and measure the module's short-circuit output current. Turn the CC trimmer to adjust the current to the charging current required by target battery. 4. Using the CV trimmer, adjust the module's output voltage to the float voltage required by the target battery. 5. Connect the target battery to the module output, observing correct polarity. Charging of the battery should commence ??br /> Constant current LED Driver Application - Instructions: 1. First determine the operating current and maximum operating voltage of the LED you need to drive. 2. With the CV trimmer, adjust the output voltage to about 5V. 3. Switch your multimeter into its 10A current scale and measure the module's short-circuit output current. Turn the CC trimmer to adjust the current to the operating current of your LED. 4. Adjust the CV trimmer to make the output voltage reach the maximum LED operating voltage. 5. Connect LED, test. Package included: 3 x 8A 300W buck adjustable power supply module

Features: Voltage: 2.8-30.0V Current: 0-10.0A 18350/18650/26650 Resolution: 0.1 Accuracy: 2% Measure: Voltage/current/capacity/the load resistance All in one meter Suitable for: 18350 18650 26650 lithium li-ion battery and other battery for DIY project Function description: Measure the battery voltage Range: 2.8~3.0V Resolution: 0.1V Accuracy: 2% Measure the battery capacity Battery capacity is the battery grid form on the LCD display, a total of five girds. Battery capacity is distinguished by the battery voltage Displaying X0 grids stand for full capacity, X1 girds for 4/5 capacity, X2 grids for 3/5 capacity, X3 grids for 2/5 capacity, X4 grid for 1/5 capacity, X5 grid for 0/5 capacity. (default:  3.7V full capacity, 2.8V is exhausted) Can be set the full capacity 2.9v-30.0V, the exhausted 2.8V-29.9V Measure the current: Range: 0.0~10.0A Resolution: 0.1A Accuracy: 2% Measure the resistance of the current: Range: 0.0~10.0A Resolution: 0.1A Accuracy: 2% Measure the resistance of the load: Range: 0~999, when over 999 display OL Resolution: when less than 10, resolution is 0.01 When less than 100, resolution is 0.1 When less than 1000, resolution is 1 Accuracy: 2% With Backlight, default off-backlight, you can turn on/off the backlight by button Specifications: Size: 42 x 19 x 12mm Display size: 25 x 12mm Note: battery: 2.8V Working temperature: -10 to 40 Package included: 3 x Lithium Li-ion battery tester module