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B083DZ7VB7 Price: $11.61 Score: 1000.000 Category: Electronics Rating: 2.9 Votes: 12 Find similar products 6-48V Battery Charging Controller Module, Battery Low Voltage Cut Off Automatic Switch On Protection Undervoltage Controller, for Under Voltage Control Over-discharge Protection. Specifications: Model: YX815 Control voltage: 5V-60V Control current: 20A Control accuracy: 0.1V Voltage error: ±0.1V Scope: storage battery, lithium battery, etc Packing: antistatic bag Size: 7.9 x 4.3 x 2.8cm/3.11 x 1.69 x 1.10inch Installation dimensions: 76 x 39.5mm/2.99 x 1.56inch Weight: 44g Voltage setting method: In setting state(digital tube flashes) S1: up-regulated voltage S2: down-regulated voltage S1 undervoltage setting button (charging startup, load stop): 1.Under normal display voltage, press the S1 button to display the charging start(load stop )voltage value. 2.Long press the s1 button digital lamp tube flashing, and set charging startup voltage（load stop） value through s1 and s2 buttons. S2overvoltage setting button (charging stop, load start): 1.Under normal display voltage, press the S2 button to display the charging stop （load start up）voltage value. 2.Long press s2 button digital lamp tube flashing, through s1 and s2 buttons to set charging stop （load start up）voltage value. Restore factory Settings: Under the state of electricity, press the buttons of s1 and s2 at the same time, and the digital tube displays 888, that is to restore the original factory setting success. (Note: when s1 cannot up regulate the voltage, set s2 first, and s2 cannot down regulate the voltage, set s1 first) Package Included: 1 x Battery Charging Controller.	B07V3PWC23 Price: $6.29 Score: 8.065 Category: Electronics Rating: 4.1 Votes: 10 Find similar products Comimark 1Pcs XH-M609 DC6-60V Battery Low Voltage Disconnect Protect Undervoltage Module. Description: XH-M609 DC6-60V Battery Low Voltage Disconnect Protection Undervoltage Module DC Output Board Feature: 1. ST processing chip. 2. Using environmentally friendly materials, the upper and lower occlusion is more firm, and the power-on performance is good. 3. High-brightness three-digit tube, display accuracy is 0.1. Specification: Supply Voltage: DC 7-80V Output Voltage: DC 7-80V Control accuracy: 0.1V Scope of application: various batteries, lithium batteries Size: 554015mm/2.161.570.59'' Note: Please allow 1-3cm differs due to manual measurement. Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understanding. Package included: 1 x Battery Low Voltage Disconnect Protection Module.
B0B7MBNP4G Price: $14.59 Score: 8.000 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.	B07H3SFXB2 Availability: Currently unavailable Score: 7.692 Category: Electronics Rating: 4.1 Votes: 5 Find similar products Akozon Protection Board, 12V-24V Storage Lithium Battery Charging Control Protection Board Charger Switch Module. .
B081LYCL4T Price: $8.6 Score: 7.576 Category: Electronics Rating: 3.7 Votes: 24 Find similar products LIVISN 3S 30A 12.6V Max Li-ion Lithium 18650 Battery Charger Protection Board PCB BMS Batteries Protecting Module (3S 30A). Operating Current: 15A (natural cooling 10A, additional heat sink 15A, the maximum instantaneous current of 30A). Main features: over charge protection, over-discharge protection, short circuit protection, overcurrent protection. No part design on the back, can be attached to the heat sink to ensure that large currents to work long hours. Lift Condition:Protecting release the auto recovery, without activation. Connection: welding output. Module:3S Li-ion Lithium Battery Protection Board overcharge detection voltage :4.25 ± 0.025V overcharge Lift the voltage:4.15 ± 0.05V over discharge detection voltage :2.50 ± 0.08V over discharge Lift the voltage:3.00 ± 0.1V overcurrent current:20-30A working current:15A(Natural cooling 10.A, add heat sink 15A, the maximum instantaneous current 30A) Remove protection condition automatic recovery, without activation Protections: Short circuit protection Overcharge protection Over-discharge protection Overcurrent protection Operating temperature:-40~+85℃ Size:50224mm(LWH) Package include: 1 x 3S Li-ion Lithium Battery Charger Protection Board.	B07G456MS8 Price: $6.99 Score: 7.463 Category: Electronics Rating: 4.7 Votes: 8 Find similar products NOYITO DC to DC 5A 75W Buck Power Supply Module CC CV DC 5V - 36V Buck to 1.2V - 32V Output ADJ 75W Max Constant Voltage Constant Current Step-Down Power Supply Module LED Driver Board. Module features: 1. High power, high efficiency, 5A, low ripple; 2. Three-in-one: used as a common step-down module with overcurrent protection; used as a charger for various voltage lithium batteries, batteries, nickel-cadmium nickel-hydrogen batteries (batteries), for solar panels, wind power generation Machine and other occasions; used as a high-power LED constant current drive module; 3. There are two modes of constant voltage and constant current, and there are indicators to indicate which mode the module is currently in; 4. When used as a lithium battery charger, you can set the float voltage and charge current, and the indicator light indicates whether it is charging or is full; 5. With current limiting protection, the module will not burn out even if the output is short circuited. Module parameter Input voltage: DC 5V - 36V. Output voltage: DC 1.25V - 32V continuously adjustable. Output current: adjustable, 5A (recommended for use within 4.5A). Output power: 75W (recommended to use within 50W, please reduce power when using large differential pressure). Working temperature: -40~+85 °C. Working frequency: 180KHz. Conversion efficiency: 96%. Short circuit protection: Yes (limit current 8A). Over temperature protection: Yes (automatically turn off the output after over temperature). Input reverse connection protection: None, (If necessary, please input a large current diode in the input string). Installation method: 4 pieces of 3mm twisted wire. Wiring method: terminal block or soldering terminal, V-IN is input, V-OUT is output. Module size: length 68.2mm width 38.8mm height 15mm. Weight: 35g. Note: When using this module for more than 3A, 35W, please strengthen the heat! ! ! Package Included 1Pcs NOYITO DC-DC 5A 75W Buck Power Supply Module.
B07CYQKCW4 Price: $29 Score: 7.194 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.	B07L4XCC8W Price: $179.99 Score: 7.143 Category: Electronics Rating: 4.5 Votes: 685 Find similar products Cllena DC/DC 12V to 24V Boost Converter 50A 1200W Step Up Voltage Regulator Module Car Power Supply Voltage Transformer (Input 10V-16V). Wiring: INPUT+ to BAT+, GND to BAT-; OUTPUT+ to LOAD+, GND to LOAD- Note: * Never connect to solar panel, PWM/MPPT charge controller, inverter or wind turbine. * Never charge the battery. Keep good air convection. * Never reverse the polarity. * Use the enough big cable to avoid the voltage drop. Application: 12V DC battery as input power to 24V DC appliances as output load. Specifications: Input Rated Voltage: 12V DC Input Voltage Range: 10V-16 DC Output voltage: 24V DC Output Current: 50 Amp Output Rated Power: 1200W Efficiency: 97% (half load); 95% (full load) Ripple: 200mVp Line Regulation: ±0.2% Load Regulation: ±0.2% Voltage Accuracy: ±1.5% Enclosures: IP68 Case Operating Temperature: -40~85°C Total Size: 22012763mm(LWH) Weight: 2200g Features: 1. 100% full power and stable current output, non-isolated module. 2. Industry grade DC 12V to DC 24V step up converter, efficiency up to 95%. 3. Die-cast aluminum shell, epoxy potting, cooling by free air convection; Waterproof level IP68 and anti-shock protection. 4. Protections: Over-current, Over-voltage, Over-temperature, Over-load and Short-circuit, auto-recovery when device is back to normal operating. 5. Certificates: CE/RoHS, 1 year warranty, lifetime up to 100,000 hours. Package included: 1 x DC 12V-24V 50A Step up Converter Questions: How to choose the correct current for loads? For example, if the max current of your load device is 10A, then choose 10A/0.8=12.5A at least for resistive loads according to international standard. If the load device is motor or compressor, then you may choose 10A/0.5=20A according to real testing result since the motor and compressor starting current may be 2-3 times than nominal current.
B00RYJ3P8E Availability: Currently unavailable Score: 7.143 Category: Electronics Rating: 3 Votes: 2 Find similar products SMAKN 4.5-30V to 0.8-30V DC Converter Constant Current Solar Battery Charger PWM LED Buck Driver IC Power Supply. Module properties: non-isolated step-down module (BUCK) Input Voltage: DC 4.5-30V Output Voltage: DC 0.8-30V Output Constant Current Range: 0.1-5A Operating temperature: -40°c to +85°c Working frequency: 300KHz PWM control frequency range: 100-300Hz Conversion efficiency: up to 95% Short circuit protection: YES ( the Limit current is the Setting constant current value) Over-temperature protection: Yes (Over-temperature Automatically shuts down the output) Input reverse polarity protection: None ( please install diode at input port ) Output anti irrigation protection: None ( please follow the picture to install the Anti-irrigation diode ) Charging indication: charging Red light, full charged Green light Installation: four 3mm screws Wiring: Connection: V-IN input, V-OUT output Dimensions: 60x26x20mm Some Application: DIY voltage Regulator, with constant current, can protect the load. The power supply for electronic equipment. For a variety of battery charging, Setting the charging voltage and charging current according to the different voltage and battery capacity, with charging indicator, convenient to observe the state of charge. solar panels power supply for battery charging, With constant current, which prevents battery overcharge. Driver high-power LED, Free series-parallel combination, With PWM control input, Available SCM to Control the LED brightness (PWM control frequency range 100-300Hz). Use as a car power supply, Power supply for electronic equipment. Package Include: 1x DC Converter.	B07NZNLRLT Availability: Currently unavailable Score: 6.803 Category: Electronics Rating: 4.9 Votes: 13 Find similar products KNACRO 24V to 13.8V 30A 414W Power Buck Module Car Step Down DC DC Converter Voltage Regulator Reducer. Wiring: INPUT+ to BAT+, INPUT- to BAT-, OUTPUT+ to LOAD+, OUTPUT- to LOAD- Reminder: Never reverse the polarity. Use the enough big cable to avoid the voltage drop. Never connect to solar panel or wind turbine. Never charge the battery. Efficiency: 95% Input Voltage:DC 24V (18-36V) Output Voltage: DC 13.8V Output Current: 30A Ripple: 130mVp Line Regulation: ±0.2% Load Regulation: ±0.2% Voltage Accuracy: ±1.5% Enclosures: IP67 Dimension: 747432mm Net Weight: 0.32kg Case Operating Temperature: -40~85°C Warranty: 1 year MTBF: 100,000 hours Application: 24V DC battery of vehicles as input power to 13.8V DC appliances as output load. Questions How to choose the correct current for loads? For example, if the max current of your load device is 10A, then choose 10A/0.8=12.5A at least for resistive loads according to international standard. If the load device is motor or compressor, then you may choose 10A/0.5=20A according to real testing result since the motor and compressor starting current may be 2-3 times than nominal current.