If the battery is good, the reading will be higher than 12 volts. It will hit the 12.8 volts if it is fully charged and 12.1 volts if it is about 50 percent charged. If is it about 11.9 volts … Continue reading →

Batteries are used during preflight to power up the electrical system and to start the Auxiliary Power Unit and/or the engines. Once started, the APU or engine(s) drive generators which then power the electrical circuits and recharge the batteries. What … Continue reading →

Yes, it can. It will work OK if you have no other alternative battery choice. It will last quite a while operating a car. However, the deep cycle battery will not be charged fully by an alternator. Can I use … Continue reading →

How do I know if my 18650 battery is bad? How do I know my 18650 is Dying? The battery will lose a charge on the shelf must faster than normal. The battery gets hot when charging or discharging, warmer … Continue reading →

Short haul, commuter flights for small numbers of passengers are much closer to going electric, especially if battery technologies become somewhat lighter. Smaller all-electric or hybrid regional planes might be available sometime in the 2030s, according to Boeing. Is it … Continue reading →

If you plan on traveling with your computer or mobile devices, you may be concerned about the X-ray security scanners an airport. These machines emit X-ray radiation, and you may wonder if it will damage your hardware. However, X-rays do … Continue reading →

There are many great deep cycle lead acid battery brands, such as US Battery, Interstate Battery, Powertron, Duracell, Deka and many others, but almost everyone will agree Trojan batteries are the best. Trojan batteries provide superior performance, long lifespans and … Continue reading →

In an electrolytic cell, an external source of electricity (such as a battery) is used to drive electron flow from the anode, where oxidation occurs, to the cathode, where reduction occurs. An external source of electrical energy is needed because … Continue reading →

If they are discharged, they will certainly freeze, but when I’ve seen that happen the case will often crack. It would be safest to bring it inside and let it warm up a bit. Some batteries don’t like to be … Continue reading →

In equalization mode, the controller increases the battery voltage to 15.5V and maintains it for 2-3 hours; the battery voltage is then lowered before the charge controller goes into float mode automatically (Stage 3). What is equalization mode in battery … Continue reading →

Ionic compounds conduct electricity when molten (liquid) or in aqueous solution (dissolved in water), because their ions are free to move from place to place. Ionic compounds cannot conduct electricity when solid, as their ions are held in fixed positions … Continue reading →

Your best bet for long-term battery storage is to run the charge down to 50 percent, remove the battery from the device, and keep it cool. But even ideal storage conditions can leave you with a dead battery after three … Continue reading →

Setting a Timer A charger with 15 amps, for instance, will take about two hours to fully charge a battery at a 25-percent discharge value. Chargers with only 5 amps, however, will need a full six hours with the same … Continue reading →

12V is a normal voltage for car electronics because car starting batteries use 6 lead-acid 2V cells in series. That’s a de-facto standard so all the lightbulbs, radios etc. must work on 12V (or between 10–15V depending on whether the … Continue reading →

What is the difference between an ionic compound and a molecular compound? In ionic compounds the atoms (or group of atoms) exist as ions and are held together by electrostatic forces. In molecular compounds the atoms are held together by … Continue reading →