To determine how long a 12-volt battery will last while pulling 2 amps, you need to know the battery's amp-hour (Ah) capacity. For example, if you have a 12-volt battery with a capacity of 50 Ah, you can calculate the runtime by dividing the capacity by the current draw: 50 Ah ÷ 2 A = 25 hours. However, the actual runtime may be less due to factors like battery age, temperature, and discharge rate.
To determine how long an 80 amp-hour battery can last when drawing 0.5 amps, you can use the formula: time (in hours) = battery capacity (in amp-hours) / load current (in amps). So, 80 amp-hours ÷ 0.5 amps = 160 hours. Therefore, the battery can last approximately 160 hours under that load, assuming ideal conditions and no significant losses.
The duration a 2200 Ah battery lasts depends on the load it's powering. For example, if the battery is discharging at a rate of 2200 amps, it would last for one hour. Conversely, if the load is lower, say 220 amps, the battery could last for 10 hours. To determine the exact duration, divide the battery capacity by the current draw in amps.
To determine how long a 100Ah battery will last with a 20W light, you first convert the wattage to amps. Using the formula: Amps = Watts / Volts, and assuming a 12V battery, the light draws about 1.67A (20W / 12V). Therefore, a 100Ah battery would last approximately 60 hours (100Ah / 1.67A) under ideal conditions, without accounting for factors such as battery efficiency and depth of discharge.
depends how strong and how many amps are still in battery and the each radio is different
That depends on the load. If the load is 1 milli-amp, the battery would last for 4400 hours. If the load is 8800 milli-amps, the battery would last for 1/2 hour. (in a perfect world, discounting electrical inefficiencies)
How long a battery will provide power depends on the rate at which electricity is drawn from the battery. The slower the power is removed, the longer it will last, and the faster it is removed, the shorter the duration. The "Mah" stands for: "Milli" means one thousandth, the "a" stands for Amps, and the "h" stands for hours. The 4500 Mah rating means that the battery is capable of delivering 4,500 Milliamps [or 4.5 Amps] for one hour. 4,500 Milliamps is the same as 4.5 Amps. Since how long a battery can deliver power depends on the withdrawal rate, here are some examples of delivery times in relation to some withdrawal [discharge] rates: * The 4500 Mah battery will provide 4,500 Milliamps [4.5 Amps] for one hour, or * 9,000 Milliamps [9 Amps] for one half hour, or * 18,000 Milliamps [18 Amps] for one quarter of an hour [15 minutes], or * Going in the opposite direction, at a discharge rate of only one [1] Milliamp per hour, then it will last for 4,500 hours!
As long as the battery is the same overall size and the terminals are in the same location, then yes.
To determine how long a 12-volt battery will run at 4 amps, you need to know the battery's capacity in amp-hours (Ah). For example, if the battery has a capacity of 50 Ah, you can calculate the runtime by dividing the capacity by the current: 50 Ah / 4 A = 12.5 hours. Therefore, the battery would last approximately 12.5 hours under a constant load of 4 amps. Keep in mind that actual runtime may vary due to factors like battery age and discharge rate.
It depends on the laptop. If you have a small laptop like an EEE PC you could see 10-12 hours. If you have a mid-range laptop with a power-efficient processor you could get 6-8, and if you have it in a gaming rig laptop you may see around 3 hours.
Car batteries should last for a few years at least. There are factors that affect battery life such as alternator, humidity/salinity and quality of battery. Also using a battery with the proper amount of cold cranking amps is important as well. Check with your local retailer to find the best battery for your vehicle.
Calculating Battery LifeYou should do your own homework, but I'll give you part of the answer to get you started, and you can do your own math. Divide the Amp-hour capacity of the battery [22] by the current draw in Amps [65 mA = 0.065 Amps]. That will give you the number of hours the battery will last. If you want to convert that to days, divide again by 24 [the number of hour in day].
It seems a 2600mAh battery lasts up to 80-100% more than a regular battery. This can mean it can be used approximately 15 hours or more.