Smoke alarm & Carbon Monoxide detector question for winter

[Insist on live music]

Given that batteries don't do well in cold . . . what's the recommended strategy for Smoke Alarm / CO2 detectors for winter? Can these 10-year batteries withstand the cold? or should I bring them indoors? (Owners manual gives only vague advice)

We have one Smoke alarm in main living area featuring lithium 10-yr battery and NOT hard-wired. There's a combination Smoke alarm / Carbon Monoxide in sleeping area - unsure whether it is hard-wired. (I feared being too aggressive to remove it from ceiling).

I had planned to activate main Battery Disconnect lever and bring primary marine battery inside for winter on "trickle" charge.

Thanks for opinion!

[jkwilson]

Cold weather is very good for batteries. Low temperature slows the processes that lead to age related failure, while high temperatures accelerate them.

[trailrydr]

Given that batteries don't do well in cold . . . what's the recommended strategy for Smoke Alarm / CO2 detectors for winter? Can these 10-year batteries withstand the cold? or should I bring them indoors? (Owners manual gives only vague advice)

We have one Smoke alarm in main living area featuring lithium 10-yr battery and NOT hard-wired. There's a combination Smoke alarm / Carbon Monoxide in sleeping area - unsure whether it is hard-wired. (I feared being too aggressive to remove it from ceiling).

I had planned to activate main Battery Disconnect lever and bring primary marine battery inside for winter on "trickle" charge.

Thanks for opinion!

Our 2019 295RL smoke detector 9v battery lasted 4 yrs before needing changed. Not bad for a RV stored 60% of the time IMO.