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B07X1CJC9F Availability: Currently unavailable Score: 1000.000 Category: Electronics Rating: 4.6 Votes: 9 Find similar products USB Power Module, DROK DC-DC 5V to 3.3V 9V 12V 24V Adjustable Buck Boost Converter Battery Voltage Current Tester Meter LCD Step Up Down Power Supply Module Voltmeter Ammeter. 3.5~12V to 1.2~24V Buck Boost Converter & Multimeter Two Working Mode: 1. Power Output Mode (PER) --- convert 3.5V~12V to 1.2V~24V. 2. Multimeter Mode (VAH) --- measure voltage, amperage, power, battery capacity and discharging time. Application: 1. As USB buck converter & boost converter 2. As voltmeter 3. As ammeter 4. As power meter 5. As battery capacity tester meter 6. As battery load capacity detector Using step: 1. Connect to power supply from input terminal; 2. Set work mode by keep pressing 'ON/OFF' for 10s; 3. Connect load or Device Voltage; 4. Rotate potentiometer to change output voltage if work in PER mode; 5. Short press 'ON/OFF' to switch displayed parameter; 6. Test and use. Parameter: Power Output Mode (PER): Input voltage: DC 3.5V~12V Output voltage: DC 1.2V~24V Output power: 3W max. - Max output power within 2W when outputs 1.2V~2V; - Max output power within 3W when outputs 2V~20V; - Max output power within 2.5W when outputs 20V~24V. Output voltage accuracy: +/- (0.5% + 1 digit) Output current accuracy: +/- (1% +2 digits) Multimeter Mode (VAH): Measuring voltage range: 0-35V Measuring current range: 0-3A Measuring power range: 0-110W Measuring battery capacity range: 0-9999Ah Discharging time: 0-100h Work Temperature: -40℃~85℃ Work Humidity: 0%~95%RH Attention: 1. No reverse connection protection. Do not short circuit and reverse. 2. Adjust the working mode before using. 3. USB port can only input DC 5V. Need to input power from 'VIN+' and 'VIN-' if input 3. 5V-12V. Package Included: 1x USB Power Module.	B087QF8N1T Price: $8.89 Score: 8.264 Category: Electronics Rating: 4.7 Votes: 6 Find similar products DAOKI 2Pack USB Buck Boost Converter DC-DC 3.5V-12V to 1.2V-24V Adjustable Step Up/Down Power Supply Module Voltage Regulator. Specifications: Input voltage range: DC 3.5-12V Output voltage range: DC 1.2-24V adjustable Output Power: When output voltage is 1.2v~2v, please use it within 2W; When output voltage is 2v~20v, please use it within 3W; When output voltage is 20v~24v, please use it within 2.5W. Display: 3-Bit digital display Size: 80 x 20 x 14mm / 3.15 x 0.79 x 0.55 Use steps: 1.Input voltage from Standard USB or Micro USB or ‘VIN+’ and ‘VIN-’; 2.Turn ON display screen; 3.Adjust potentiometer to get the required voltage; 4.Connect load. Note: Short press - turn on/off the output. Long press - turn on/off the display. clockwise - increase voltage; counter-clockwise - decrease voltage. Package Included: 2 x USB Buck Boost Converter 2 x Micro USB Cable.
B07PF67T3P Availability: Currently unavailable Score: 7.299 Category: Electronics Rating: 4.1 Votes: 134 Find similar products 150A Watt Meter Power Analyzer High Precision RC with Digital LCD Screen for voltage (V) current (A) Power (W) Charge(Ah) and Energy (Wh) Measurement. Main Feature: Working voltage: 0 to 60 Volts. Easy To Use: Requires no configuration or programming. Digital LCD screen: Easy to read LCD screen provides clear number readings. Real Time Reading: The Watt Meter will continuously provide real time readings of the amps, volts, and watts after connection. (All Measurement screen value are updated every 0.4 second) Specifications: Operates from 4.8-60V 0V, with optional auxiliary battery Measures 0-150 A, resolution 0.01A 0-60 V, resolution 0.01V; 0-6554W,resolution 0. 1W; 0-65 Ah, resolution 0.001AH; 0-6554 Wh, resolution 0.01wh; 16x2, backlit LCD display; Size: 85x42x25mm, Weight 82g; Packing including: 1 * 0-60V 150A Watt Meter and Power Analyzer. 1 * User Manual.	B00LUJQIWY Availability: Currently unavailable Score: 6.897 Category: Electronics Rating: 5 Votes: 5 Find similar products Vktech Mini DC 2.5-30V Yellow LED Panel Voltage Meter 3-Digital Display Voltmeter. •100% Brand new and high quality •Mounting Holes: 28mm •Range: DC 2.5-30V two-wire access •Display: three 0.36 \LED digital tube •Display color: Yellow •Refresh rate: about 500mS / •Measuring accuracy: 1% (+ / - 1 words) •Power Supply: DC 2.5-30V (line) with the input common •Operating temperature: -10 ~ +65℃ •Net Weight: About 5g •Color: As the picture •Dimension: Approx. 23x15x10mm (without mounting ears) •Cord Length: Approx. 150mm •Includes : 1 x Digital Voltmeter.
B01LX1Z17Z Availability: Currently unavailable Score: 6.803 Category: Electronics Rating: 3.5 Votes: 3 Find similar products Fengfang Electronic Battery Tester, 60W Constant Current Circuit DC 12V TE553 Load Battery Discharge Capacity Testing Detection Meter. Specifications: Operating modes: Single mode constant current (CC) Power: 60W Power supply voltage: DC 12V Power supply current: 0.5-5A Discharge current: 0.20 - 9.99A stepper 0.1A or 0.01A Discharge current maximum error: 0.01A - 0.7% The maximum capacity test error: 0.5A - 2.5%, 2A - 1.5%, more than 5A - 1.2% Offline/Termination Voltage Range: 1.0-25.0V stepping 1V or 0.1V Discharge voltage : 1.00-30.00V Maximum voltage measurement error: 1% ¡À0.02V Maximum power: 60W (Automatically limits the maximum current. For example, when input is 12V, the current will be below 5A.) Maximum battery test statistic: 999.9Ah or 9999Wh (stops when one of them achieve the value) Fan control : Intelligent Control Board Dimension: 100 x 70 x 57mm (the Fan protrudes about 12mm) Positioning hole position: 60 x 88mm Positioning hole diameter: 3.2mm with 5mm brass pedestal already installed Notes: 1. The wires and cables are not included. 2. During the Battery capacity testing, the discharge current can adjust at any time. If you want to reset the terminal voltage, please press Start-Stop switch to stop discharging.(It will go back to setting, the data will not be losing. If you want to delete all the data, please press and hold Start-Stop switch until it shows 0.000Ah) 3. The tester features an automatic power-down save function, it will automatically save the pre-set data and the operating status, restore them after the circuit recovery. Package includes: 1 x Constant Current Electronic Load 60W Battery Discharge Capacity Tester.	B0B7MBNP4G Price: $14.59 Score: 6.757 Category: Electronics Rating: 4.7 Votes: 4 Find similar products JESSINIE ZK-4KX DC-DC Buck Boost Converter Regulator CNC Adjustable CC CV 0.5-30V Voltage Converter DIY Solar Battery Charging Power Supply Module LCD Display with Shell. Anti-reverse connection protection at the input end, reverse connection will not burn; The output terminal prevents backflow, and there is no need to add a backflow prevention diode when charging the battery; The module can be set to turn on/off by default; Has a variety of software protection mechanisms, and the protection threshold is adjustable. After the module operating parameters exceed the protection threshold, the output is automatically turned off. The output ripple is small, with π-type filtering; Thickened heat sink Product parameters Input voltage: 5.0-30V Output voltage: 0.5-30V Output current: It can work stably at 3A for a long time and reach 4A under enhanced heat dissipation. Output power: 35W for natural heat dissipation and 50W for enhanced heat dissipation Voltage display resolution: 0.01V Current display resolution: 0.001A Operating frequency: 180KHZ Conversion efficiency: about 88% Soft start: Yes (very high power with load module may fail when starting) Protection mechanisms: Input anti-reverse connection; Output backflow prevention; Input undervoltage protection (4.8-30V adjustable, default 4.8V) Output overvoltage protection (0.5-31V adjustable, default 31V) Output overcurrent protection (0 -4.1A adjustable, default 4.1A) Output over-power protection (0-50W adjustable, default 50W) Over-temperature protection (80-110 ℃ adjustable, default 110 ℃) Timeout protection (0-100h adjustable, closed by default) Super capacity protection (0-60Ah adjustable, closed by default) Note: After the product triggers the protection mechanism, the output will automatically turn off, the LCD screen will display the protection code, press any key to exit the protection interface.
B07SD5LC9Q Availability: Currently unavailable Score: 6.757 Category: Electronics Rating: 5 Votes: 3 Find similar products DC-DC Boost Converter, Power Supply Step Up Module with Voltmeter, Adjustable Boost Converter 4.5V-32V Input 5V-35V Output. Specifications : Input Voltage: 4.5V-32V Output Voltage: 5V-35V (adjustable) Max. Output Current: 4A Efficiency: <92% Output Ripple: <30mV Switch Frequency: 400kHz Operating Temperature: -40℃~+85℃ Size: 663614mm/2.591.410.55 Instruction : 1. For the first time powering on, the default display is input voltage, and the input indicator IN lights up.Press the button, then it displays output voltage, and the output indicator OUT lights up.The last setting will be saved, even if power off and restart. 2. Input output voltage measurement error calibration:Press and hold button switch for more than 4 seconds then release to enter voltage measurement error calibration function, indicator IN lights up(input voltage calibration), and display flickeringly shows calibration value (default is 0.0). Press button to change this value (range of -0.5V to 0.5V)After adjustment of the input voltage calibration value, press and hold button for more than 2 second then release to enter the output voltage error calibration function, indicator OUT lights up (output voltage calibration), and display calibration value. Adjustment method is the same as the input adjustment. 1. If input voltage is lower than 4.5V, the voltmeter will not work and display. 2. Input voltage must be at least 1V higher than output voltage. 3. When power is over 20W, a heat sink is recommended to enhance heat dissipation. 4. If output voltage is always equals to input voltage and cannot be adjusted,turn potentiometer more than 10 circles counterclockwise please, then voltage can be adjusted normally. Package Includes: 1 x Boost Converter Module.	B07CYQKCW4 Price: $29 Score: 6.667 Category: Electronics Rating: 3.5 Votes: 11 Find similar products DC Programmable Meter Controller 0-200V 0-300A Volt Amp Power Ah Auto Shut Down. The DCM9040 Battery Monitor The unit is designed to monitor performance most kind of battery systems, it continuously monitors voltage, discharge current, number of power, consumed amp hours, these information leads to more efficient use of the battery, which can enhance battery life and reduce the risk of failure. Combines many functions in one, Dual display. Voltage (V), Power (W), Current (A), Ampere-hour (Ah), Working Hours (H). Equipped with programmable alarm, to run a generator when needed or to turn off devices when the reading reaches a set threshold (relay required). An alarm is acknowledged when a button is pressed. On most of the DCM9040's readings an alarm can be triggered when the value reaches a set threshold. [OVP] Over Voltage protection [LOP] Low Voltage protection [OCP] Over Current protection [OAH] Over Charge protection [OPP] Over Power protection *[OFT] Over Time protection Flexible On-line calibration function, calibrate Voltage and amps reading easily. 4 digits LED, High accuracy Measure currents up to 400 amps, capacity up 999 amp hours. No need isolated power. Technical Specification Power Supply: 5~40V Measuring range: 0-200V/0-1000A (external power), 5-40V/0-1000A (internal power) Display Type: 7 segment 4 digits Red LED Sampling rate: 5 readings per second Accuracy: Volt ± 0.1% + 2byte / Amp ± 0.5% + 3byte Resolution: 0.01V, 0.01A, 0.01W, 0.01Ah, 0.01H Dimensions: 79.0mm x 43.0mm x 25.0mm Package including 1x Combo Meter 1x Expansion board with cable 1x Shunt 1x Installation instruction.
B07L5KVYHD Availability: Currently unavailable Score: 6.536 Category: Electronics Rating: 5 Votes: 9 Find similar products 12A Power Supply Module DC-DC Buck Converter LCD Display, 5. 3V-32V to 1. 2V-32V Step Down Power Supply Module Adjustable Buck Adapter CVCC Constant Voltage Constant Current Converter with Shell. .	B07TCF26NT Price: $10.83 Score: 6.536 Category: Electronics Rating: 4.8 Votes: 3 Find similar products DC-DC Buck Converter Step Down Voltage Regulator DC 4.5V-30V to 0.8V-12V Buck Converter Constant Voltage Constant Current Adjustable Power Supply Module. DC-DC Buck Converter Step Down Voltage Regulator DC 4.5V-30V to 0.8V-12V Buck Converter Constant Voltage Constant Current Adjustable Power Supply Module.