9 Best Variable Voltage Batteries of July 2021

  1. Product Highlights
    • 【constant voltage and current operation mode 】variable power supply current are continuously adjustable from 0 to 30v, and the voltage and current are automatically adjusted. easily adjust the voltage knob, so that you can quickly set the required output resolution. as the circuit components are connected and disconnected, it is easy to see the changes of current and vo...
    • 【lightweight design,easy to carry】this bench power supply is small and light, which is widely used in laboratories, schools, electrical maintenance, production line testing, lamp testing, aging testing, battery charging, product development, home diy and other occasions requiring dc power supply. with 5v2a usb interface, it can charge the equipment in need of maintenance.
    • 【high sensitivity and high accuracy】this 30v 10a dc power supply has a high resolution of 0.1v and 0.01a,and can be easily adjusted in the range of 0-30v and 0-10a. the 3 digits led display provides a more accurate readout for the voltage and current value, even be visible easily in the dark environment.
    • 【quality components and safety】this bench power supply has multiple protections. overvoltage, overcurrent, overheating, overload, short circuit protection, effectively extend the service life of the dc power supply.when the working temperature exceeds 50 ℃, the intelligent overheat protection will start the cooling fan to cool down according to the load.
    • 【packaging and after sales】1 x dc power supply, 1 x output power cord, 1 x input power cord, 1 x user manual, 1 x warranty card, providing professional after-sales service and support, please feel free to contact us if you have any concerns, we will reply to you to solve your problem in 24h.
  2. Product Highlights
    • ◆【high quality with essential safety】safety is our priority. grounding wire, the power supply takes the function of limited flow protection, overpower protection, over temperature protection, voltage overload protection. greatly improving its working efficiency and lifespan!
    • ◆【various application】this one weighs less than 2kgs and measures only 2.7*8.6*6.3inches, applies for laboratory, school, home, electronic repair diy, aging test and other requirements thanks to complete test probes and output cable with alligator clips.
    • ◆【high precision, wide range】longwei dc power supply is a professional power supply regulation device that designed with crystal clear, backlit 4-digit led display of voltage, current, and power. precise accuracy: 00.01v and 00.01a. you can easily tune it within 0-30v and 0-10a. very durable and easy to observe even in low light conditions.
    • ◆【excellent heat dissipation】equipped with a big fan controlled by intelligent temperature control sensor and multiple heat radiation grooves on both sides, intelligent fan offers excellent heat dissipation effect, which reduces the noise and prolongs the life of product effectively.
    • ◆【what you get】1 x k3010d dc power supply, 1 x output power cord, 1 x input power cord, 1 x test probes, 1 x user manual. (buy now risk-free with 30 days free of return,we provide 12-month after sale service, lifetime technical support. please feel free to contact us if you have any concerns,we will reply to you to solve your problem in 24h.)
  3. Product Highlights
    • ◆【high quality with essential safety】safety is our priority. grounding wire, the power supply takes the function of limited flow protection, overpower protection, over temperature protection, voltage overload protection. greatly improving its working efficiency and lifespan!
    • ◆【various application】this one weighs less than 2kgs and measures only 2.7*8.6*6.3inches, applies for laboratory, school, home, electronic repair diy, aging test and other requirements thanks to complete test probes and output cable with alligator clips.
    • ◆【high precision, wide range】longwei dc power supply is a professional power supply regulation device that designed with crystal clear, backlit 4-digit led display of voltage, current, and power. precise accuracy: 00.01v and 0.001a. you can easily tune it within 0-60v and 0-5a. very durable and easy to observe even in low light conditions.
    • ◆【excellent heat dissipation】equipped with a big fan controlled by intelligent temperature control sensor and multiple heat radiation grooves on both sides, intelligent fan offers excellent heat dissipation effect, which reduces the noise and prolongs the life of product effectively.
    • ◆【what you get】1 x k605d dc power supply, 1 x output power cord, 1 x input power cord, 1 x test probes, 1 x user manual. (buy now risk-free with 30 days free of return,we provide 12-month after sale service, lifetime technical support. please feel free to contact us if you have any concerns,we will reply to you to solve your problem in 24h.)
  4. Product Highlights
    • ◆【5v/2a usb interface& auto power calculation】what does the usb do? please don't worry about run out of power now, you can charge your phone, repair phones and more through the 5v/2a usb interface. the hot selling point is that this power supply can calculate output voltage and current into power intelligently and displays the value on its large screen accurately. 110v ...
    • ◆【excellent heat dissipation】equipped with a big fan controlled by intelligent temperature control sensor and multiple heat radiation grooves on both sides, intelligent fan offers excellent heat dissipation effect, which reduces the noise and prolongs the life of product effectively.
    • ◆【high precision, wide range】longwei dc power supply is a professional power supply regulation device that designed with crystal clear, backlit 4-digit led display of voltage, current, and power. precise accuracy: 00.01v and 00.01a. you can easily tune it within 0-30v and 0-10a. very durable and easy to observe even in low light conditions.
    • ◆【high quality with essential safety】safety is our priority. grounding wire, the power supply takes the function of limited flow protection, overpower protection, over temperature protection, voltage overload protection. greatly improving its working efficiency and lifespan!
    • ◆【various application】this one weighs less than 3kgs and measures only 11.2 x 5 x 5.7 inches, applies for laboratory, school, home, electronic repair diy, aging test and other requirements thanks to complete test probes and output cable with alligator clips. (buy now risk-free with 30 days free of return,we provide 12-month after sale service, lifetime technical support...
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