12-10-2019, 10:29 AM
This is an interesting thread!
I liked NiCd, they don't mind being ignored for ages (I am using some 'D' size Nicads which were left on the shelf for 15 years. They are working at near full capacity.)
I like lead acid, but obviously they need their care - don't leave discharged. Non-reversible crystal growth of lead sulphate slowly kills them.
LiIon on the other hand, I have read that keeping charged actually shortens their life as the side reactions occur to a greater extent when there is loads of metallic lithium.
I've not had enough experience of NiMH, but again read that they don't exhibit 'memory effect'.
I'd be interested in a 3-way comparison, watt-hours per cc; watt-hours per kg, and watt-hours per £, of the various technologies (the last-generation NiCd, when they would be as good as they were going to get). As the terminal voltages are significantly different, mA-H comparisons are not really that helpful. If anyone can put up a little table, I'd be really grateful!
I liked NiCd, they don't mind being ignored for ages (I am using some 'D' size Nicads which were left on the shelf for 15 years. They are working at near full capacity.)
I like lead acid, but obviously they need their care - don't leave discharged. Non-reversible crystal growth of lead sulphate slowly kills them.
LiIon on the other hand, I have read that keeping charged actually shortens their life as the side reactions occur to a greater extent when there is loads of metallic lithium.
I've not had enough experience of NiMH, but again read that they don't exhibit 'memory effect'.
I'd be interested in a 3-way comparison, watt-hours per cc; watt-hours per kg, and watt-hours per £, of the various technologies (the last-generation NiCd, when they would be as good as they were going to get). As the terminal voltages are significantly different, mA-H comparisons are not really that helpful. If anyone can put up a little table, I'd be really grateful!
