Battery Question

[suppavillin]

Ok, I got the meter and checked everything and all the bateries are the same, all are reading 6.4. Looks like I made it out of that mishap with no damage. Thanks to all again.

Now I have a question about this meter and how to test other batteries. Say a battery is a 3.7v little flashlight battery. It says 3.7 on the side of it. How do read the meter to know if its dead or dying. Would it say 3.5 or 3.6 or something like that? Like how many .1's does it have to lose to be considered almost dead or dying? Like use a AA for instance. I have 1.2v recharable AA's that actually read 1.3? when full(I thought 1.2 would be there mazx???) So what would they read if they just died.

[suppavillin]

Like I have 3.7V batteries reading 4.19 I would have thought 3.7v means the most it can read is 3.7??

Originally Posted by suppavillin

Ok, I got the meter and checked everything and all the bateries are the same, all are reading 6.4. Looks like I made it out of that mishap with no damage. Thanks to all again.

Now I have a question about this meter and how to test other batteries. Say a battery is a 3.7v little flashlight battery. It says 3.7 on the side of it. How do read the meter to know if its dead or dying. Would it say 3.5 or 3.6 or something like that? Like how many .1's does it have to lose to be considered almost dead or dying? Like use a AA for instance. I have 1.2v recharable AA's that actually read 1.3? when full(I thought 1.2 would be there mazx???) So what would they read if they just died.

Originally Posted by suppavillin

Like I have 3.7V batteries reading 4.19 I would have thought 3.7v means the most it can read is 3.7??

maybe thats a question for a battery forum

[JohnnieB]

The voltage stamped on a battery is the nominal voltage, but the term refers to a generic class the battery falls into rather than the voltage itself.

The actual voltage of a cell or battery (which is two or more cells connected in series) depends on the chemistry within the cell, plus a half dozen, or so, other factors.

There are upwards of four dozen sets of chemistry used in commonly available primary (non-rechargeable) cells, about the same number in secondary (rechargeable) cells and both lists are growing, so to determine what the actual voltage of a specific cell or battery should be, you have to identify which chemistry is used, then toss in how long it has been since the cell was made (or last charged if rechargeable) and how much it has been used since then.

For example, the commonly accepted nominal voltage of a deep-cycle lead-acid wet-cell is 2V, but at 2.000V it is about 50% discharged, and when fully charged (another ambiguous term) the voltage is about 2.122V for a typical golf cart battery. (Notice the use of the word"about". )

[suppavillin]

Originally Posted by JohnnieB

The voltage stamped on a battery is the nominal voltage, but the term refers to a generic class the battery falls into rather than the voltage itself.

The actual voltage of a cell or battery (which is two or more cells connected in series) depends on the chemistry within the cell, plus a half dozen, or so, other factors.

There are upwards of four dozen sets of chemistry used in commonly available primary (non-rechargeable) cells, about the same number in secondary (rechargeable) cells and both lists are growing, so to determine what the actual voltage of a specific cell or battery should be, you have to identify which chemistry is used, then toss in how long it has been since the cell was made (or last charged if rechargeable) and how much it has been used since then.

For example, the commonly accepted nominal voltage of a deep-cycle lead-acid wet-cell is 2V, but at 2.000V it is about 50% discharged, and when fully charged (another ambiguous term) the voltage is about 2.122V for a typical golf cart battery. (Notice the use of the word"about". )

Thanks again Johnnie. Your always very helpful. Im grateful. Thank you. Ill just have to test these get numbers for each kind. Thanks again. :)

[suppavillin]

Originally Posted by crash test dummy

maybe thats a question for a battery forum

I guess I stepped out of line asking questions about other batteries. Ill make sure to join a battery forum for my battery questions.

[suppavillin]

Originally Posted by crash test dummy

maybe thats a question for a battery forum

I guess I stepped out of line asking questions about other batteries. Ill make sure to join a battery forum for my battery questions.