hi-fi battery

Eh, what hi-fi for mere 12 bucks? Real hi-fi starts from a grand for el-cheapo ones, duh...

$13/ea seems rather expensive. Peavy sells them direct for $8/ea:

Personally, I don't like alkaline batteries.

I use 9V Lithium iron phosphate primary cells in smoke alarms when I can get them - they are the same size as 9V alkaline batteries, but last a lot longer - about 10 years - and cost more when you can get them.

Bill Sloman, Sydney

Don't you mean lithium iron disulphide?

Does it go on fire if you short one?

I just use 9V Alkaline batteries in my multimeter Does not leak, used every day, for more than a year now:

I do use li-ion in many other things though, high power ones in my drones..

Am 26.06.26 um 02:28 schrieb john larkin:

Not available here. :-)

There is an article from NIST on battery noise. (1133.pdf, pubs are a moving target url @ NIST.) They may not endorse products, so I repeated it with batteries I could actually buy.

and also some lab supplies: <

Gerhard

The lithium iron disulphide primary batteries from Energizer have internal over-current and over-temperature protection. There is an internal ptc protection device. The details for the original cylindrical cell are in the Energizer patent. John

Interesting, I take it the 'unloaded peaks' that are about the same frequency for all batteries are a local noise source?

Good

I have an Ultrafire 18650 that has writtin on those it has internal protection duck duck says: UltraFire 18650 Rechargeable Battery - 2600mAh | 3.7V 5.2A | Protected The UltraFire 18650 Battery 2600mAh delivers 3.7V, 4-5A discharge, and built-in protection, providing safe, high-performance, rechargeable power for flashlights and outdoor gear.

And these:

I wasn't aware that 9V primary lithium iron phosphate batteries were available in the same size package as alkaline ones. Do you have a link please? John

a lot of guitarist seems to worse than hifi audiopholes when it comes to magic nonsense to "get the right tone"

Thanks. As far as I know, smoke alarm batteries are non-rechargeable (primary cell) lithium batteries and not LiFePO4, which are rechargeable:

Bass players are a strange bunch. .

Cheers

The last carbon monoxide detector that I dismantled had a lithium thionyl chloride cell soldered in. The battery was not replaceable and the complete unit had a rated life of 7 years. It actually lasted over 10 years. John

I bought mine from Farnell - I think I had to buy a pack, which was a nuisance.

They don't seem to to stock them any more.

The web shows up hordes of candidates - mostly from China - but they tend not to go into the battery chemistry in any detail, and the retail trade isn't all that careful about battery chemistry.

They're going to tell you every- and any- thing except the capacity.

Any product advertisement relying on "testimonials" is usually unreliable hype.