Is this possible? My friend tells me that using AA batteries for his digital camera he gets the following results; First situation: Rechargeable batteries rated 1.2 volts after charging the batteries he reads : 1.359 volts Is this normal? Second situation: With regular AA batteries there is no voltage indicated on the batteries; but at one point his camera will tell to change the batteries; he checks the voltage and he gets a reading of 3.389 volts How is this possible? Den
Sure, though he's likely over-charging them with a dumb charger. Define "regular". Define the circumstances. No, this is not normal. The internal resistance of a battery will climb as it discharges. At some point a "regular" battery will not be able to supply the load. However, when it's taken out of the camera (and has no load), the voltage from its intrinsic chemistry may be evident. Testing batteries without a load is a usually waste of time. You might be able to find a shorted cell, but rarely weak ones.
Battery testers come in all sorts. If they load the battery, they're useful, particularly if they have a differing load for each battery type/size. If they're simply a voltmeter they're next to useless.
With regular AA batteries there is no voltage indicated on the Maybe these AA batteries aren't "regular"? I've seen 6V batteries that look like AA batteries before... Andrew Howard
It's normal for a Ni-MH to measure about 1.4V at full charge. The normal AA alkaline cell will measure about 1.3 to 1.4V when it's getting low. It's easy to tell a fresh cell from a used cell by measuring it with a DMM on the 2V range. -- @@[email protected]@[email protected]@@[email protected]@[email protected]@[email protected]@@[email protected]@[email protected]@[email protected]@,@@[email protected]@[email protected],@@[email protected]@[email protected]@[email protected]@ ###Got a Question about ELECTRONICS? Check HERE First:### http://users.pandora.be/educypedia/electronics/databank.htm My email address is whitelisted. *All* email sent to it goes directly to the trash unless you add NOSPAM in the Subject: line with other stuff. alondra101 <at> hotmail.com Don't be ripped off by the big book dealers. Go to the URL that will give you a choice and save you money(up to half). http://www.everybookstore.com You'll be glad you did! Just when you thought you had all this figured out, the gov't changed it: http://physics.nist.gov/cuu/Units/binary.html @@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@@[email protected]@[email protected]@@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@@
Not true. See other post. -- @@[email protected]@[email protected]@@[email protected]@[email protected]@[email protected]@@[email protected]@[email protected]@[email protected]@,@@[email protected]@[email protected],@@[email protected]@[email protected]@[email protected]@ ###Got a Question about ELECTRONICS? Check HERE First:### http://users.pandora.be/educypedia/electronics/databank.htm My email address is whitelisted. *All* email sent to it goes directly to the trash unless you add NOSPAM in the Subject: line with other stuff. alondra101 <at> hotmail.com Don't be ripped off by the big book dealers. Go to the URL that will give you a choice and save you money(up to half). http://www.everybookstore.com You'll be glad you did! Just when you thought you had all this figured out, the gov't changed it: http://physics.nist.gov/cuu/Units/binary.html @@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@@[email protected]@[email protected]@@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@@
