Alkaline batteries still working fine in the cold

[Reentrant]

Is it just rechargeables (Nicd and NiMH) that aren't supposed to like cold temperatures?

We have a WH1090 weather station in the garden, powered by two AA alkalines ( Costco /Kirklands ie nothing special) , and it worked fine at the lowest we've seen so far; -11.4C.

According to the specs it can go down to -40 but I don't think any batteries would like that.

[Tim]

Probably fine in a low drain device but I know of divers who have had problems with alkalines in high drain devices (like big torches) in cold waters.

Tim

[Rod]

We too have some external wireless thermometers - they have always worked so far as I am aware. But if the batteries are towards the old end, the cold weather might force replacement.

Energizer Ultimate Lithium are supposed to operate down to -40.[1]

[1] Please don't point out that I have not put C or F after that. :-)

[Mike Harrison]

Batterues don't just stop working at a certian temp - the internal resistance goes up, so higher-load devices will notice problems long before light-load things like weather stations.

[Sidney Endon-Lee]

Well, it is unlikely to be Kelvin, but it could be R=E9aumur, Rankine, R=F8mer, Newton, or Delisle.

-40=B0C =3D -40=B0F =3D 233.15 K =3D -32=B0R=E9 =3D 419.67=B0Ra =3D -28.5= =B0R=F8 =3D -13.2=B0N =3D

-210=B0De

Sid

[Sidney Endon-Lee]

=B0R=F8 =3D -13.2=B0N =3D

Sorry, make that +210=B0De

Sid.

[Sidney Endon-Lee]

.5=B0R=F8 =3D -13.2=B0N =3D

And -13.5=B0R=F8 - teaches me to try and do it all in my head. I'm out of practice.

[Harry Bloomfield]

Reentrant pretended :

As have I and mine is still on its original cells. I think it is current delivery (rather than voltage) which mostly affected by the cold weather and these do not draw very much current.

[Usenet Nutter]

My CH programmer was lying in the living room today while the windows were out as I was getting new windows fitted and when i eventually found as they were clearing up the LO warning message was showing ( room temp 5 deg C) but as it warmed up it went back to normal..The 2 batteries are Energizer Lithium AA's

[Rod]

OK! I give in.

[Mike Tomlinson]

In article , Sidney Endon-Lee writes

Thanks for that. I inherited a dual- display wall thermometer some years ago which is calibrated in centigrade and Réaumur. Always wondered what that was about.