General > General Technical Chat
Ban of non-rechargeable batteries
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all_repair:
The price of Li 1.5V rechargeable has become interesting.  Soon they shall reach your shore, and US shore too (shall depend on Trump).  I got some AA and AAA from China Taobao to try.  So far is promising.
I found those Li AA that has microUSB charging very good for wireless mouse and keyboard usage.  Big mAH, and no need to hunt for charger when the batteries run weak.
Cyberdragon:

--- Quote from: capt bullshot on July 03, 2020, 09:55:52 am ---
--- Quote from: Cyberdragon on July 02, 2020, 11:17:59 pm ---
--- Quote from: capt bullshot on July 01, 2020, 06:48:00 pm ---
--- Quote from: Cyberdragon on June 30, 2020, 03:41:35 pm ---Sub 1000mAh NiCd cells are often used in low power solar lamps (here in NA they are actual AA or AAA cells rather than those tiny soldered in button cells you have over there). I keep a little box of them around to swap out when one fails (also has a few NiMH and LiFePO cells). Yes, I know you should not store NiCd cells discharged, but I don't have a charger short of my bench supply, so I just chuck them when they get to 0.0V (they are cheap crap anyway).

--- End quote ---

Wait a second please ... For NiCd cells, the best way to store them long term is "fully discharged". Even better is to discharge them fully on purpose before storing them, this can be easily done by connecting a suitable resistor across the cell while in storage. A NiCd cell stored this way will be in usable to good shape after many years of storage. If put to storage in charged state, a NiCd cell will degrade to e.g. increased internal resistance or less usable capacity.

But ... Don't do this to NiMH cells, it's the best way to kill them quickly. These should be put to storage in fully charged state and checked / recharged at some intervals.

--- End quote ---

Ah, I got that backwards, so they are fine then. Also, when I say I chuck them at 0V, I mean 0.000V and usually internaly shorted/leaky so won't take a charge. This usually happens with the crappy generic chinese cells. Also, the ESR on these cheap cells (the lower capacity ones) is such that they barely charge at over 30mA anyway (they are meant for trickle charging).

--- End quote ---
Leaky is K.O., but "internally shorted, so won't take charge" is easily fixed by applying a rather high charging current for a few seconds. Good cells are fine again afterwards. A quality NiCd cell is quite a robust thing.

--- End quote ---

These are cheap garden light batteries. They are not high quality, and physically robust but not sure about electrically. I can try next time a cell fails, but not gonna be happy if a "Xang-dong" or whatever it is cell bursts. I'll have to get an explosion containment pie dish. ;D
coppercone2:
up next : how to recycle wall paint

(this is how you trash devices fucking with gas pressures in cheaply made vessels filled with caustic soda)

its not a conspiracy. its thin walled high pressure corrosive materials confinement for under 1$.
coppercone2:

--- Quote from: cliffyk on July 03, 2020, 05:47:38 am ---We don't need a ban of anything, once a product's value and utility are gone it will go away by itself--like buggy whips, VCRs and dot matrix printers.

Slavery would have disappeared during the "industrial revolution" as machines replaced manual labour--the so-called "Civil War" was just a typical politically motivated government fustercluck to "fix" something that would have gone away anyway; just as automation is eliminating unskilled labour now.

"Improvise, adapt, and overcome": Human's, like most of nature;s creatures when left to their own devices, are good at that--and quite resilient; government intervention has screwed up more things than it has ever fixed...

--- End quote ---

have you heard of the cubical before? they would just put a bed in one of those and you have functional slavery until .... when?

And on a more serious note, you should study the German slave industry during WW2. It was alot bigger then just the famous camps. Study satellite camps. They were quite industrial, and productive. You sound extremely uneducated of history. They managed to make use of slaves in applications as advanced as chemical analysis laboratories and precision machine works. Basically you save on employee pay and OSHA stuff related to long term life expectancy (so expect unsafe work with radiation, poor PPE, bad exposure limits, etc). Anything more complicated then 'it blinded me so I can't work tomorrow' is of no concern at that point.

Seriously this is some delusional uneducated shit that makes you sound evil. 
Zero999:

--- Quote from: GlennSprigg on July 01, 2020, 12:41:57 pm ---The 'problem' I have at times with 'AA' 'Rechargeables' is in the likes of some Cameras etc.
Rechargeables are typically 1.2v instead of 1.5v. So "Low Battery" comes on too early!!!  :-\
--- End quote ---
That's because the device is poorly designed and depending on the current draw, could be wasting as much as half the capacity of alkaline cells. A properly designed device should operated down to at least 1V per cell. I hate this kind of junk.
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