Ni-MH / Ni-Cd chargers (AA/AAA)
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Ni-MH / Ni-Cd chargers (AA/AAA)
In almost every family, factory, and office, there is a constant need for standard AA and AAA batteries—they power remote controls, wireless mice, wall clocks, Xbox controllers, and noisy children's toys. By switching to rechargeable Ni-MH (nickel-metal hydride) batteries, you gain massive TCO savings. However, for these batteries to actually last their promised 500 to 1000 charging cycles, they require a specialized, boil-proof VIDEX Ni-MH charger.
Why professionals choose the specialized VIDEX Ni-MH / Ni-Cd charger:
- Precise -dV (Delta-V) control technology: Unlike cheap market chargers that brutally charge batteries with a timer and boil them, VIDEX detects the precise and microscopic moment of voltage drop. This indicates when the cell is full and immediately stops charging, saving the battery from death.
- Completely independent channels: Most VIDEX chargers offer 4 independent charging slots. This means you can simultaneously charge one, two, or three differently discharged batteries, and each will receive exactly the dose of current it needs, without waiting for the others to be full.
- Temperature control and peace of mind: The smart microchip prevents battery overheating, which is the main cause of Ni-MH cell degradation. It is an absolutely safe solution for daily use, even if you forget and leave it plugged into the socket overnight.
Invest smartly, stop polluting nature with hundreds of disposable batteries, and buy a reliable charger that will actually protect them! Find your charger in our e-shop!
Q: How does the -ΔV (Negative Delta V) charge termination mechanism work in Ni-MH / Ni-Cd battery chargers?
Q: Why is it recommended to use a pulsating current with a Trickle Charge function for charging Mignon (AA) and Micro (AAA) Ni-MH batteries?
Q: What is the difference between Ni-Cd and Ni-MH battery charging modes and preventing the Memory Effect?
Q: How long is the working life of Ni-MH battery chargers and their safe indoor operation?
Q: Why do some Ni-MH chargers refuse damaged or heavily worn AA/AAA accumulators?
A: When a Ni-MH cell reaches 100% capacity, its terminal voltage momentarily drops by -5 mV to -10 mV. The microprocessor registers this voltage drop (-ΔV) and instantly terminates the fast charge, switching to a maintenance pulse mode (Trickle Charge). This precise measurement method prevents overheating and electrolyte evaporation in 1.2V Ni-MH cells.
Q: Why is it recommended to use a pulsating current with a Trickle Charge function for charging Mignon (AA) and Micro (AAA) Ni-MH batteries?
A: The pulsating Trickle Charge current compensates for the natural self-discharge of Ni-MH electrochemistry after the main charging phase ends. The micro-current supply integrated into VIDEX Ni-MH chargers keeps the accumulators 100% ready for use without raising the cell temperature above +30°C.
Q: What is the difference between Ni-Cd and Ni-MH battery charging modes and preventing the Memory Effect?
A: Ni-Cd accumulators have a pronounced memory effect, requiring a complete discharge down to 1.0V before charging, whereas in the latest Ni-MH elements, this problem is virtually eliminated. Therefore, specialized Ni-MH/Ni-Cd chargers include an automatic Discharge function that ensures cell voltage equalization prior to the charging cycle.
Q: How long is the working life of Ni-MH battery chargers and their safe indoor operation?
A: Integrated protection circuits against overvoltage and short circuits ensure the charger electronics' resource lasts for more than 5 years. The chargers' plastic casing is made of fire-resistant polycarbonate (UL94 V-0 standard), ensuring safe operation from a 230V AC mains supply.
Q: Why do some Ni-MH chargers refuse damaged or heavily worn AA/AAA accumulators?
A: If the battery's internal resistance exceeds 500 mΩ due to wear or its voltage fails to rise above 0.5V, the microprocessor classifies the cell as defective. The charger stops the current supply and displays an error message (DEF / Err) on the screen or via an LED indicator, preventing dangerous cell heating.
