Voniko via Amazon has 24-Pack Voniko Premium Grade AAA Batteries for $6.79 - 5% when you checkout via Subscribe & Save = $6.45. Shipping is free w/ Prime or on $35+.
Voniko via Amazon[amazon.com]has 24-Pack Voniko Premium Grade AAA Batteries for $6.79 - 5% when you checkout via Subscribe & Save = $6.45. Shipping is free w/ Prime or on $35+.
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I bought the Voniko brand previously but am not happy with it. they don't seem to last as long as the name brands like Duracell.
There's actually a reason for this. It's because the ambient temperature tends to dip at night. Battery voltage is affected by temperature (through its internal resistance). Ri seems to rise with lower temperature, resulting in less applied voltage to the circuit.
So when your battery is wearing out and near the trip limit for the low voltage warning, the low temperature at night can push it below it and you get rudely awakened due to... science!
that's odd, voniko was very high rated by the project farm youtube channel, and he is the ultimate tester. btw, $7.37 is the average camelcamel price on this. not really slick, imo.
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I tried this brand for the first time 8 months ago when I needed some 9V ones for my smoke detectors. They've been great for the price and are still going. If they last a year I'll consider them equal in capacity to the premium brands for that application, or at least plenty good enough.
Edit: Why do smoke detectors always seem to decide to start the low battery chirp at 3 in the morning?
There's actually a reason for this. It's because the ambient temperature tends to dip at night. Battery voltage is affected by temperature (through its internal resistance). Ri seems to rise with lower temperature, resulting in less applied voltage to the circuit.
So when your battery is wearing out and near the trip limit for the low voltage warning, the low temperature at night can push it below it and you get rudely awakened due to... science!
Great answer, although I thought that in a climate controlled space it wouldn't matter. It seems to happen in the wee hours every single time, so that's the only logical explanation.
A related factor may be that they're ceiling mounted, and thus more subject to daily attic hot/cool cycles due to proximity. I would guess that the temperature an inch or two from my ceiling would be warmer during the day, and at a low point sometime before sunrise.
Great answer, although I thought that in a climate controlled space it wouldn't matter. It seems to happen in the wee hours every single time, so that's the only logical explanation.
A related factor may be that they're ceiling mounted, and thus more subject to daily attic hot/cool cycles due to proximity. I would guess that the temperature an inch or two from my ceiling would be warmer during the day, and at a low point sometime before sunrise.
Yes correct, the temperature in a large space is not monolithic and what the thermostat measures is only a point sample. There's no guarantees on what the swing is spatially further away from the measurement point. Due to all kinds of complications with radiation, convection and fluid dynamics, it's pretty much impossible to disentangle. All we can say is the thermostat is keeping the area around it 'close enough' to the set temperature. The roof and attic are likely varying several degrees C above and below that during a diurnal cycle!
Yes correct, the temperature in a large space is not monolithic and what the thermostat measures is only a point sample. There's no guarantees on what the swing is spatially further away from the measurement point. Due to all kinds of complications with radiation, convection and fluid dynamics, it's pretty much impossible to disentangle. All we can say is the thermostat is keeping the area around it 'close enough' to the set temperature. The roof and attic are likely varying several degrees C above and below that during a diurnal cycle!
I tried this brand for the first time 8 months ago when I needed some 9V ones for my smoke detectors. They've been great for the price and are still going. If they last a year I'll consider them equal in capacity to the premium brands for that application, or at least plenty good enough.
Edit: Why do smoke detectors always seem to decide to start the low battery chirp at 3 in the morning?
It's probably why I seem to look at the clock when it says "12:34". I probably don't look at it any more than any other time, but notice it when I do. Nighttime chirps are more noticeable! Also I really think my chirps go off mostly in the daytime, because I remember dealing with it right away. The night chirp might get the ear pillow treatment.
Same in Duracell would be 100% more expensive ......can you speak to the Duracell lasting more than twice as long 🤔
Depends on usage, If you are hiking in the middle of nowhere, you are not carrying extra weight. If you are using them at home, rechargeables are always the better choice in the long run. I have rechargeables going on for almost 20 years.
Disposable batteries are good for office use, kids, and for things you don't care about if they leak into them. The only time I'm buying disposable batteries is for gifts that run on batteries.
I tried this brand for the first time 8 months ago when I needed some 9V ones for my smoke detectors. They've been great for the price and are still going. If they last a year I'll consider them equal in capacity to the premium brands for that application, or at least plenty good enough.
Even a carbon-zinc 9V should last a year. In my experience, alkaline 9Vs will last approximately five years in a (non-hardwired) smoke detector.
Quote
from tomrit
:
I won't use alkaline batteries again, too many devices were damaged by their juices. Rechargeable batteries are way better and cheaper.
I completely agree. Modern alkaline batteries seem to be even worse than older ones, when it comes to leaking. Duracells are the worst.
It's probably why I seem to look at the clock when it says "12:34". I probably don't look at it any more than any other time, but notice it when I do. Nighttime chirps are more noticeable! Also I really think my chirps go off mostly in the daytime, because I remember dealing with it right away. The night chirp might get the ear pillow treatment.
It gives my dog something akin to a panic attack because she doesn't know what it is, so I get it stopped as quick as I can.
He's the master. Takes no freebies, sponsorships, or advertising. His tests have furthered my education on a lot of things, especially Chinese knockoffs and house brands like Amazon Basics. I don't think there's a more impartial or unbiased product tester out there.
"But it strikes at the point - much of his "testing" doesn't produce worthwhile results. When it comes to oil, what he tests is often irrelevant, and pointless, leading to misinformation and specious results."
I think I just paid $15 for 48 Kirkland or so, which I hope are just rebranded major OEM ones. Also consider the impact on the environment if they don't last as along, and more importantly, make sure to discard them properly (return to electronics store etc., don't throw in trash)
I tried this brand for the first time 8 months ago when I needed some 9V ones for my smoke detectors. They've been great for the price and are still going. If they last a year I'll consider them equal in capacity to the premium brands for that application, or at least plenty good enough.
Edit: Why do smoke detectors always seem to decide to start the low battery chirp at 3 in the morning?
The temperature drop causes voltage to dip in early hours.
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So when your battery is wearing out and near the trip limit for the low voltage warning, the low temperature at night can push it below it and you get rudely awakened due to... science!
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Edit: Why do smoke detectors always seem to decide to start the low battery chirp at 3 in the morning?
It's programmed into the firmware lol. Jk
So when your battery is wearing out and near the trip limit for the low voltage warning, the low temperature at night can push it below it and you get rudely awakened due to... science!
A related factor may be that they're ceiling mounted, and thus more subject to daily attic hot/cool cycles due to proximity. I would guess that the temperature an inch or two from my ceiling would be warmer during the day, and at a low point sometime before sunrise.
A related factor may be that they're ceiling mounted, and thus more subject to daily attic hot/cool cycles due to proximity. I would guess that the temperature an inch or two from my ceiling would be warmer during the day, and at a low point sometime before sunrise.
Yes correct, the temperature in a large space is not monolithic and what the thermostat measures is only a point sample. There's no guarantees on what the swing is spatially further away from the measurement point. Due to all kinds of complications with radiation, convection and fluid dynamics, it's pretty much impossible to disentangle. All we can say is the thermostat is keeping the area around it 'close enough' to the set temperature. The roof and attic are likely varying several degrees C above and below that during a diurnal cycle!
Just kidding bro...thanks for sharing your knowledge.
I do minimize the inconvenience with fresh batteries for all when the first one chirps. The old ones work fine in multimeters and such for a while.
Edit: Why do smoke detectors always seem to decide to start the low battery chirp at 3 in the morning?
Disposable batteries are good for office use, kids, and for things you don't care about if they leak into them. The only time I'm buying disposable batteries is for gifts that run on batteries.
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"But it strikes at the point - much of his "testing" doesn't produce worthwhile results. When it comes to oil, what he tests is often irrelevant, and pointless, leading to misinformation and specious results."
https://bobistheoilguy.
I think I just paid $15 for 48 Kirkland or so, which I hope are just rebranded major OEM ones. Also consider the impact on the environment if they don't last as along, and more importantly, make sure to discard them properly (return to electronics store etc., don't throw in trash)
Sign up for a Slickdeals account to remove this ad.
Edit: Why do smoke detectors always seem to decide to start the low battery chirp at 3 in the morning?
The temperature drop causes voltage to dip in early hours.