It's what happens when a battery is about to expire.
Assuming 24 volts or lower is implied in the question, low voltage energy can be taken from a battery or from a low-voltage transformer fed from the house supply.
battery
No, the voltage is determined by the technology of the cell: Ni-Cad 1.2 v Alkaline 1.5 v Zinc chloride 1.6v Lithium 3 v
When a voltage source, such as a battery or a generator, is on open circuit -in other words, when it is not supplying a load- the voltage appearing across its terminals is called its 'open circuit voltage' and corresponds numerically to its electromotive force.However, when the voltage source supplies current to a load, that current also passes through the voltage source itself. This causes an internal voltage drop, which is the product of this current and the voltage source's internal resistance. This voltage drop acts in the opposite direction to the electromotive force and reduces the source's terminal voltage. This internal voltage drop will increase, of course, if either the load current increases or the internal resistance increases.So, in order to keep that the source's internal voltage drop is as low as possible, its internal resistance must be as low as possible. In the case of a battery, the internal resistance is due to the ionic resistance of the electrolyte/plates, whereas in a generator it is due to the resistance of the windings.
Assuming your battery supplies a constant and exact voltage of 12VDC, then your 15 watt load will draw 15 W / 12 V = 1.25 A. Your battery can provide 20Ah, so you'll drain it in 20Ah/1.25A = 16h. Note these are only theoretical values; a real battery doesn't behave like that. The voltage is likely to be higher than 12VDC on a fully charged battery (more like 13..14VDC in a typical car battery, for example), and the voltage will drop over the discharge. Just how the voltage drops (how fast, how low) is a function of the battery (design, quality, age) and environment (temperature, possibly altitude).
It means the battery voltage is low. Can be the battery is defective or the alternator is failing.
No
It's all relative. A battery has internal resistance. Batteries are not "ideal" voltage sources. If there is a "heavy" load on the battery (low resistance), the voltage you measure on the outside of the battery will be lower. A car battery is normally thought of as a 12 volt battery. When there is no load (disconnected) you can often measure in excess of 13 volts if it's fully charged. During normal cranking of the engine, the voltage can drop below 11 volts.
On Volvo S40 2004 onwards, when the remote key battery voltage is low a text message is displayed in driver's information message screen that the remote key battery voltage is low which means the remote key battery should be replaced. .ab.
because of low battery voltage
Low voltage from battery
Assuming 24 volts or lower is implied in the question, low voltage energy can be taken from a battery or from a low-voltage transformer fed from the house supply.
The battery light comes on when the alternator output voltage is too low or too high. You have a wiring or regulator problem.The battery light comes on when the alternator output voltage is too low or too high. You have a wiring or regulator problem.
Yes. You just don't want to exceed the voltage rating of the capacitor.
Low plus bb voltage to the Power Train Module means that for some reason the voltage actually is too low. Check the battery an alternator for the proper voltage output.
Low battery voltage .?
High and low voltage can be stabilizes in a 415V battery, by ensuring that it is being spread across the battery evenly. It is important that all of the energy not come from one area.