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First find the current which is 250/12 = 21A rounded off. So you would need 6 of the batteries in parallel to get a bit more than 1 hr and probably 11 batteries in parallel would provide around 2 hours of operation. This is not precise since the power supply wouldn't always consuming 250 watts of power.
What else can I help you with?
If the power supply does not spin what should you do?
infact i think the power supply be replaced with new one. infact i think the power supply be replaced with new one.
How can you measure the ampere or watt for power supply?
You can measure the current and power of a 'power supply', using an ammeter and a wattmeter. With the power supply connected to its load, the ammeter must be connected in series with the power supply's input. The wattmeter's current coil must also be connected in series with the power supply's input, and its voltage coil must be connected in parallel with the supply, taking the instrument's polarity markings into account.
What battery does Uninterruptible power supply use?
Uninterruptible power supplies (UPS) typically use sealed lead-acid batteries, although some models may also use lithium-ion batteries. These batteries provide backup power to the UPS when there is an interruption in the main power source, allowing for continuity of power supply to connected devices.
What is the source of electricity in the electromagnets?
The source for an electromagnet can be any electrical supply. Batteries or derived from the mains, using a transformed and rectified supply.
Battery ac or DC?
Batteries can provide both AC (alternating current) or DC (direct current) power, depending on the type of device they are connected to. However, most batteries themselves supply DC power. Devices that require AC power typically use an inverter to convert the battery's DC power into AC power.
Should one provide 12volts for charging two 6volt batteries which are connected in such a way that cathode of one battery is connected to cathode of other and anode is also connected in similar manner?
If two batteries are connected in parallel (i.e anode of first with anode of other and cathode of first with cathode of other), then they cannot be charged using 12V, it may damage them.But if anode of first is connected to cathode of other (i.e. Batteries in Series) and cathode of first with cathode of 12 V supply (i.e. cathode of charger) and anode of second with anode of 12 V supply(i.e. anode of charger) then both the batteries can be charged using 12 V supply, easily.
Can current increased from two battery connections?
Two batteries can supply more current than one if they are connected in parallel.
Why does a battery connected to an uninteruptable power supply unit heat up?
UPS's recharge the batteries during normal power. The recharge current will make the batteries temperature rise some.
Why do you not get battery symbol on your laptop sometimes after you on power supply in your laptop made by Toshiba model no A200?
Note: When interconnecting A200 batteries (cells), they must be identical in voltage and amp rating! Batteries may be connected in series. The positive terminal of the first battery is connected to the negative terminal of the second battery; the positive terminal of the second is connected to the negative of the third, and so on. The voltage of the assembled battery is the sum of the individual batteries. The batteries are connected: + to - to + to - to + to -, etc. The capacity of the battery is unchanged. Batteries may also be connected in parallel. The positive terminal of the first battery is connected to the positive terminal of the second battery, the positive terminal of the second is connected to the positive of the third; the negative terminal of the first battery is connected to the negative terminal of the second battery, the negative terminal of the second is connected to the negative of the third and so on. The batteries are connected: + to + to + and - to - to -. In this configuration, the capacity is the sum of the individual batteries and voltage is unchanged.
How will the UPS work when connected to a normal power supply?
When connected to a normal power supply a UPS takes enough power to keep its battery charged and passes the power through to the device to which it is attached. When normal power fails the UPS uses its batteries to deliver clean power to the attached device.
What supply class does batteries fall into?
Class I
What possible advantage could there be in connecting several identical batteries in parallel?
Several identical batteries connected in parallel supply the same voltage as a single one of them does, but will power the same device several times longer than the single one can before running down.
If the power supply does not spin what should you do?
infact i think the power supply be replaced with new one. infact i think the power supply be replaced with new one.
How an inverter is connected to supply?
it should be connected to a breaker in the distribution panel.
Why can't we connect the plus of one battery (or any power supply) to the negative of another battery without connecting both sources in series or parallel and get current flow, and why does it not work this way please?
If the batteries are incorrectly connected, the batteries will cancel out each other’s energy and quickly flatten each other
Wet-cell batteries are typically used to supply electrical energy to?
autos lead acid batteries are wet cell
Why does the lamp bright when connected to the AC?
why does the lamp bright when it is connected to the AC supply
