VIDEX Universal Chargers with LCD Display

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Universal Chargers (Li-Ion / Ni-MH)

Modern tech users often have a whole "zoo" of different batteries at home - ranging from classic AA cells in children's toys to massive 21700 lithium batteries in smart home sensors or powerful tactical flashlights. Instead of buying, searching for, and storing five different chargers for each battery type in your drawers, smart VIDEX universal chargers combine absolutely everything into one compact and professional device.

Why experts and tech enthusiasts choose universal VIDEX chargers:

Complete automation and information: Premium models are equipped with informative LCD or LED displays that show voltage, precise charging percentages, and selected current in real-time. The device itself "understands" whether you have inserted a 3.7V Li-Ion or a 1.2V Ni-MH cell and acts accordingly.
Integrated Powerbank function: Certain premium models are equipped with a USB output. By inserting charged lithium batteries into them, you can use the charger as an external power source to charge your smartphone or GPS device in emergency situations in the forest or while traveling.
Restoration and fast charging functions: The charger offers the ability to revive deeply discharged (0V) batteries, as well as adjust the charging speed depending on need and time, preserving the chemical composition of the elements.

Optimize your workspace, stop buying unnecessary devices, and entrust all your battery charging to one smart tool. Order reliable quality at open tools!

Q: How do universal chargers automatically recognize 1.2V Ni-MH / Ni-Cd and 3.7V Li-Ion accumulator electrochemistry?

A: Upon inserting an accumulator into a slot, the microprocessor precisely measures the cell's Open Circuit Voltage. An element with a voltage below 1.6V is classified as 1.2V Ni-MH/Ni-Cd, whereas a voltage above 2.0V activates the VIDEX 3.7V Li-Ion (charge up to 4.20V) protocol, eliminating the risk of applying wrong voltage.

Q: Why is it possible to manually or automatically select the charging current (0.5A, 1A, 2A) in universal chargers?

A: Accumulators of different sizes have different maximum charging capacities and C-ratings (charge/discharge rates). Supplying 2A current to a small 10440 Li-Ion element will overheat it, while charging a large 21700 accumulator at 0.5A will take over 10 hours, so adjusting current maintains an optimal charge and heat balance.

Q: How do LCD or LED screens improve charging process monitoring in universal chargers?

A: Precise LCD displays show cell voltage in millivolts (V), charging current (mA), loaded capacity (mAh), and internal resistance (mΩ) in real time. This telemetry data allows engineers or users to evaluate accumulator health and identify degraded elements with heavily increased internal resistance in a timely manner.

Q: Can protected (Protected Button-Top) 18650 Li-Ion accumulators also be charged in universal chargers?

A: Yes, mechanical slider springs are designed with an extended travel capable of accommodating elements up to 72-75 mm long. This ensures reliable mechanical contact with both regular Flat-Top (65 mm) and longer Button-Top models featuring an integrated PCB/BMS microchip.

Q: What should be done if a universal charger fails to recognize a deeply discharged 1.2V Ni-MH accumulator that has dropped below 0.5V?

A: In cases of deep discharge, the smart microchip may mistakenly fail to initiate the charging process due to protection considerations. In this situation, the accumulator should be temporarily connected in parallel with another full 1.2V element or the charger's manual Forced Activation button should be used to raise the voltage slightly above the 0.9V recognition threshold.