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Post by overthehill on Jan 21, 2023 15:52:19 GMT
Has anybody tried one of these torches or the technology - no batteries , activated by salt water ? I watch Saving Lives at Sea, RNLI tv programme but can't recall it being mentioned.
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Post by bernythedolt on Jan 21, 2023 16:23:39 GMT
Never tried one, but I do have a wind-up torch/radio which has stood the test of time.
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Post by Deleted on Jan 21, 2023 17:24:08 GMT
Dad had one on his life jacket 40 years ago
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adrianc
Member of DD Central
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Post by adrianc on Jan 21, 2023 18:38:29 GMT
Dad had one on his life jacket 40 years ago Not this technology, he didn't. The old ones had a battery, and the "switch" was basically water shorting to complete the circuit. This is a little fuel cell, patented in 2017, and brought to market in the last couple of years. Clever little thing. When it dries out, it'll stop working - but re-wet it, and it's back. Eventually, it'll exhaust, but more than enough to get you out of trouble.
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Post by overthehill on Jan 21, 2023 20:59:59 GMT
Dad had one on his life jacket 40 years ago Not this technology, he didn't. The old ones had a battery, and the "switch" was basically water shorting to complete the circuit. This is a little fuel cell, patented in 2017, and brought to market in the last couple of years. Clever little thing. When it dries out, it'll stop working - but re-wet it, and it's back. Eventually, it'll exhaust, but more than enough to get you out of trouble.
I thought it must be new technology but didn't want to comment as I literally look at it today for the first time. It caught my eye because I was listening to someone talking about salt water batteries and how they might replace lithium batteries along with all the associated political and mining baggage. Salt water is everywhere.
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radar
Member of DD Central
Posts: 106
Likes: 62
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Post by radar on Jan 21, 2023 23:10:44 GMT
What became of the OXYGEN battery, in the 1960's we got an electric fencer for the cattle and it had an oxegen battery, a large tin box which I remember was very light, and to switch it on you pulled off a tape that was covering some holes in the top, when you wanted to stop you replaced this tape, it may not have been all that good but it did work as intended. it was eventualy replaced by a lead acid tractor battery
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Post by Deleted on Jan 22, 2023 8:39:12 GMT
Dad had one on his life jacket 40 years ago Not this technology, he didn't. The old ones had a battery, and the "switch" was basically water shorting to complete the circuit. This is a little fuel cell, patented in 2017, and brought to market in the last couple of years. Clever little thing. When it dries out, it'll stop working - but re-wet it, and it's back. Eventually, it'll exhaust, but more than enough to get you out of trouble. No, I think it was an acetylene gas thing with a some sort of spark trigger but I understand the concept
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Post by overthehill on Jan 22, 2023 11:37:13 GMT
What became of the OXYGEN battery, in the 1960's we got an electric fencer for the cattle and it had an oxegen battery, a large tin box which I remember was very light, and to switch it on you pulled off a tape that was covering some holes in the top, when you wanted to stop you replaced this tape, it may not have been all that good but it did work as intended. it was eventualy replaced by a lead acid tractor battery
I think they are still at the experiment and research stage. Also called air batteries. Don't know if they are being used commercially but don't put all your money into Lithium ion battery storage!
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