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I came to this article to know whether NiMH batteries (as in my home wireless phone) suffer from the need to be fully discharged before recharging. Why is this not mentioned, at least in the section that compares different types? Most people won't read the Talk tab. I only came here to ask why there was no mention of this aspect of battery performance. 216.121.185.75 ( talk) 00:26, 17 March 2013 (UTC)
NiMH LSD cells internal resistance is higher not lower than traditional NiMH cells because the separator is thicker than in normal cells. LSD cells do not have a larger "area" of the separator, which is always equal to the area of the electrodes that it is separating. Instead LSD cell probably achieve their reduced internal leakage current thus reducing self discharge by increasing the thickness of the separator. Since the resistance of any material is proportional to its thickness, this decreases the internal leakage current thus prolonging the time that a cell will hold a certain amount of its charge, but this also would increase the internal resistance of the cell, not decrease it. Wpbobm ( talk) 00:11, 6 February 2014 (UTC)
I would contest part of the statement "NiMH batteries normally operate at 1.2 V per cell, somewhat lower than conventional 1.5 V cells, but will operate most devices designed for that voltage." In my experience most devices will not operate properly at this voltage and torches are not very bright either. BletchleyPark ( talk) 18:46, 24 May 2013 (UTC)
The article says emergency lights in Europe are to work for four hours after a power cut, but to the best of my information it is only one hour. (For the record: I worked as a facility manager in an office, so I am not just guessing.) 82.139.114.136 ( talk) 14:40, 22 October 2012 (UTC)
This has been extensively discussed elsewhere, but not here. An editor has claimed in a recent edit that the anode is the positive electrode relative to the cathode. This is not necessarily the case. For primary batteries the terms are distictive, but the anode is in fact the negative electrode, the positive being the cathode. If you have a look at the article anode the position should become clear. In a secondary (rechargeable) battery, the terms are ambiguous because the anode on discharge becomes the cathode on charge (and vice versa). 86.153.131.220 ( talk) 12:21, 29 October 2015 (UTC)
![]() | This page is an archive of past discussions. Do not edit the contents of this page. If you wish to start a new discussion or revive an old one, please do so on the current talk page. |
I came to this article to know whether NiMH batteries (as in my home wireless phone) suffer from the need to be fully discharged before recharging. Why is this not mentioned, at least in the section that compares different types? Most people won't read the Talk tab. I only came here to ask why there was no mention of this aspect of battery performance. 216.121.185.75 ( talk) 00:26, 17 March 2013 (UTC)
NiMH LSD cells internal resistance is higher not lower than traditional NiMH cells because the separator is thicker than in normal cells. LSD cells do not have a larger "area" of the separator, which is always equal to the area of the electrodes that it is separating. Instead LSD cell probably achieve their reduced internal leakage current thus reducing self discharge by increasing the thickness of the separator. Since the resistance of any material is proportional to its thickness, this decreases the internal leakage current thus prolonging the time that a cell will hold a certain amount of its charge, but this also would increase the internal resistance of the cell, not decrease it. Wpbobm ( talk) 00:11, 6 February 2014 (UTC)
I would contest part of the statement "NiMH batteries normally operate at 1.2 V per cell, somewhat lower than conventional 1.5 V cells, but will operate most devices designed for that voltage." In my experience most devices will not operate properly at this voltage and torches are not very bright either. BletchleyPark ( talk) 18:46, 24 May 2013 (UTC)
The article says emergency lights in Europe are to work for four hours after a power cut, but to the best of my information it is only one hour. (For the record: I worked as a facility manager in an office, so I am not just guessing.) 82.139.114.136 ( talk) 14:40, 22 October 2012 (UTC)
This has been extensively discussed elsewhere, but not here. An editor has claimed in a recent edit that the anode is the positive electrode relative to the cathode. This is not necessarily the case. For primary batteries the terms are distictive, but the anode is in fact the negative electrode, the positive being the cathode. If you have a look at the article anode the position should become clear. In a secondary (rechargeable) battery, the terms are ambiguous because the anode on discharge becomes the cathode on charge (and vice versa). 86.153.131.220 ( talk) 12:21, 29 October 2015 (UTC)