Just a few words on battery capacity. This tends to be given by the manufacturers in mAh (milli Amp hours)

Yes, an Energizer 377 or 376 battery is a silver oxide battery measuring 6.8mm x 2.6 mm. It is equivalent to a SR626SW battery. What does SW mean on a battery? and absolutlely essential for metering equipment (like light meters in cameras for example) where a stable voltage isAny of the equivalent batteries listed that have dimensions of 6.8 x 2.6 mm including the alkaline AG4 and SR626SW battery. What is an SR626SW battery? gizmos. Really it's for the electronic buffs who need to know which battery to use in a newly designed circuit.

Well, firstly Silver Oxide watch batteries tend to be more expensive than an Alkaline cell of the same size. So can youThe battery code after the digits containing ‘SW’ indicates the battery is made of sodium hydroxide electrolyte and is in compliance with the watch battery standard of IEC 60086-3. If you are replacing a National GR927 battery in a Casio calculator please note that your calculator handbook is likely to say that Since Silver Oxide and Alkaline watch batteries give the same voltage (1.5 Volts) then which battery do you choose? and this figure gives us an idea how much current can be supplied by the battery and for how long. For example, a battery

In the Silver Oxide range of batteries you will often see a different suffix to the same battery reference. For exampleLR to denote Alkaline. Those which use SG to denote Silver Oxide will tend to use AG to denote Alkaline. wherever you see a three or four digit reference number for a watch battery it is likely to follow the rule described above. Batteries made in the last several decades have not used mercury or cadmium or dangerous and unstable heavy metals. Beware of any older batteries you may think are interchangeable with AG4 batteries. If the battery designation starts with ‘MR’ it may be made from mercury. Dispose of these batteries properly.

cell sizes but approximately 30 different Silver Oxide watch battery sizes. Where Silver Oxide cells score over their Alkaline With respect to watch batteries there are 3 main types of chemistry, Silver Oxide, Alkaline or Lithium. AG4 batteries have a chemistry that is alkaline and should not be used as a watch battery replacement or a hearing aid battery replacement. The alkaline AG4 will not have enough capacity or continuous voltage to power these devices. An alkaline batteries voltage will slowly drop over time. It is imperative that the correct chemistry battery is used for the right application. Celcius a Silver Oxide battery will lose less than 10% a year, an Alkaline button cell about the same and Lithium button

SR621SW vs SR626SW Battery

refers to high drain devices. So what's the difference? Well you would tend to only use a ¨SW¨ battery Other manufacturers use a similar reference numbering system for their watch batteries, and as a general rule use a Silver Oxide watch battery. If not, and you can get the Alkaline equivalent then use that. And remember, you can which had a capacity given as 40mAh will be able to supply 40 milliamps for an hour or 20 milliamps for two hours. We can the CR927 3V lithium battery. This mistake in the handbook appears across several different models of Casio solar calculators.