You can charge batteries with a different mAh rating if the charger is designed to handle them. You need to make sure of this, because Ni-Cad battery full charge state is not necessarily voltage dependent, but rather is dependent on detection of a change in voltage slope. If the power supply is not properly designed, you can overcharge the batteries, damaging them.
It is always best to replace batteries with identical batteries. However if the replacement battery has the same voltage and the same physical construction (so it will connect electrically) it can usually be used as a replacement. The mah rating (capacity) only says how long it takes to charge and how long it will run between needing a charge. However some charging circuits might experience problems if this rating is significantly different from the original.
A 600 mAh battery can produce 75 mA for about 8 hours. If it is called upon to deliver 600 mA, it will last somewhat less than one hour. This is because ampere-hour ratings for batteries are, by standard agreement, normalized to an eight-hour rate. The actual rating is only a comparative rating, so you could properly say that a 900 mAh battery, for instance, will last 1.5 times longer than a 600 mAh battery.
The milli-amp-hours rating has nothing to do with the voltage. The rating should be something like 3000 mah at 12V or 3000 mah at 1.5V. One common 3000 mAh battery is 3.0 volts; another is 3.7 volts. A common camcorder battery is 7.4 volts. Some DeWalt tools use 12 V 3000 mAh batteries.
mAh is a measure of the amount of charge stored in a cell or battery (set of cells). One (1) Ah is the equivalent of 1000mAh, and so the statement can be made that a cell with 2000mAh of stored charge can supply a device drawing one (1) mA for 2000 hours -- before needing replacement or recharge. It also means 1/1000*C/s*3600s.(1 milli= 1/1000, C=Unit for charge, s=seconds) which finally means that a battery rated 1mAh can hold a charge equal to 3.6 coulombs of charge.
That would depend on the actual battery's specifications. I've seen some D cells rated as low as ~2000 mAh. However a full true D cell should have a rating between 10,000 mAh and 15,000 mAh.
The battery with the larger mAh rating will last longer that the battery with the smaller mAh number will last in the same application.
You should check the instructions for the answer. But an easy way of calculating the time needed is this super easy equation:Battery Capacity/Battery Charger Rate=Time to charge (in hours)For Example, a 1500 mAh Battery with a 250 mAh per hour charging rate will take 6 hours to fully charge.1500 mAh divide 250 mAh = 6 hrs.Or be the smarty pants and do it this way:the battery capacity x battery's mAh rating divided by the charger output (mA) x 1.4 (for NiCad batteries) = time (in hours).(1.5 for NiMh batteries)
Milliamps Hour (mAh) is important because it's the easiest way to distinguish the strength or capacity of a battery. The higher the mAh, the longer the battery will last. Batteries with different mAh ratings are interchangeable. If your battery is rechargeable then the mAh rating is how long the battery will last per charge. Milliamps Hour is 1/1000th of a Amp Hour, so a 1000mAh = 1.0Ah Think of a cars gas tank. Voltage is how much gas is being used, and mAh is the size of the gas tank. The bigger the gas tank (mAh) rating the longer the device will run. If your battery is rechargeable, then think of the gas tank as refillable (rechargeable).
A non-rechargeable AA battery has a mAh capacity of about 400-900. Zinc Chloride batteries store between 1000 to 1500 mAh, while alkaline batteries can store between 1700 to 3000 mAh.
The 960 mAh battery rating is an eight-hour rating. This means you can expect eight hours of operation at 120 mA. Even though mAh means milli-ampere-hour, the rating is non-linear, and it is normalized to an eight-hour rating, so you should expect somewhat less than one hour of operation at 960 mA. Keep in mind that this is a relativistic rating, intended to be used to compare similar batteries with different mAh ratings. Actual performance could vary .
It is always best to replace batteries with identical batteries. However if the replacement battery has the same voltage and the same physical construction (so it will connect electrically) it can usually be used as a replacement. The mah rating (capacity) only says how long it takes to charge and how long it will run between needing a charge. However some charging circuits might experience problems if this rating is significantly different from the original.
Lithium batteries last longer on a full charge, but are non-rechargable. Nickel metal hydride batteries are rechargeable but won't last as long per charge as lithium. Which is better depends on your needs.
Batteries have different sizes and amounts of power. -- I don't think that is what they want to know. Some batteries (of the same size) last longer because they all have different mAh levels. The more mAh a battery has, the more energy is stored in it. --
A 600 mAh battery can produce 75 mA for about 8 hours. If it is called upon to deliver 600 mA, it will last somewhat less than one hour. This is because ampere-hour ratings for batteries are, by standard agreement, normalized to an eight-hour rate. The actual rating is only a comparative rating, so you could properly say that a 900 mAh battery, for instance, will last 1.5 times longer than a 600 mAh battery.
The watt-hour rating of an AA battery can vary depending on the specific battery brand and type. On average, a standard alkaline AA battery has a capacity of around 2.6 to 3 watt-hours. However, it's important to check the specific specifications of the battery in question for an accurate measurement.
Energizer recharable batteries offer the best charge the longest.
To calculate the mAh capacity, we need to know the current rating of the battery as well. The mAh (milliampere-hour) capacity is a measure of how much charge a battery can hold over time. It is not determined solely by the voltage (9.6V in this case) but also by the current rating of the battery.