A smart alternator, also referred to as a variable voltage or ECU controlled charging system, runs at a lower voltage to a traditional alternator and then increases the voltage dramatically when the driver lifts off, this high voltage (around 17VDC) … Continue reading →

If batteries are of the same voltage and chemistry, there should be no problem in connecting them in parallel. Older battery will probably have lower capacity than the new one, but voltages will have the same. Can I parallel two … Continue reading →

Most battery fairy lights use either 2 or 3 AA batteries to light up to 40 LEDs comfortably. The beauty of having a battery light is the ease of use. Most AA batteries are 1.5 volts. The more batteries a … Continue reading →

How do I check if my battery is bad? How Do I Know if My Car Battery is Bad? Battery light illuminated on the dashboard. Engine cranks slowly when starting. Vehicle requires frequent jump starts. Clicking when you turn the … Continue reading →

No, it will not drain your battery, the circuit is not complete with a burnt out bulb. Can a blown fuse drain a car battery? The fuse by itself cannot drain the battery. It’s just a place in a circuit, … Continue reading →

For this chemistry type, 9Vs are given the designator “6LR61.” To use actual data, let’s look at this Energizer datasheet on their 522-style. It says that Alkaline batteries provide their longest life when current draw is less than 25mA. Which, … Continue reading →

These batteries also contain cadmium, cadmium hydroxide and nickel hydroxide all of which are toxic. If the user comes into contact with potassium hydroxide then the effected area should be washed with a copious supply of water. Potassium hydroxide is … Continue reading →

Distinguished. many portable car battery chargers are designed to also be a supplemental source of 12VDC power, same with those portable air compressors. As long as the polarities match and the power ratings are within the device parameters, technically, it … Continue reading →

A modern 500W PSU from a reputable brand will provide ample stable power at full load. You only need to go to above 500W if you plan on overclocking, using a more powerful CPU or GPU, and want to add … Continue reading →

The voltage drop across one resistor can be calculated using the formula: Voltage = Current * Resistor. 3 divided by the current. So if there is 2 amps, inserting a 1.5 ohm resistor will cause a 3 volt drop. It … Continue reading →

Devices that are often compatible with proprietary 12V DC adapters include: Cellphones. Laptop computers. GPS units. What devices use 12 volts? Most small DC appliances are made for 12 volt power. Many are also available for 24 volt, particularly solar … Continue reading →

Many drag racers and circle track racers have opted to run 16-volt batteries to give their ignition system and other components a boost. The extra voltage from these batteries creates a hotter spark, allowing you to run a larger spark … Continue reading →

As a rule, most computers’ USB 2.0 ports provide 0.5 amps (the minimum power for the USB standard). USB 3.0 ports provide 0.9 amps. Wall chargers are all over the map. Start by looking at your charger’s max amperage. Are … Continue reading →

The Android devices can face this Android black screen of death due to a certain number of circumstances like: Installing incompatible app or apps with bugs and virus. Keep mobile charged for long after it’s fully charged. Using a non-compatible … Continue reading →

How do I know if my converter is bad? First, if the cooling fan, internal vents, or interior lights aren’t working properly, there may be an issue. Second, if you see abnormal flickering or dimming of lights on the dashboard … Continue reading →