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#1
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UK 8.4v 30mAh NiCd Cell
Hi,
My ageing smoke alarm needs a new 8.4v 30mAh NiCd Cell (about the size of an AAA battery) with flat top. I'm not really clued up on electronics. I assume the 30mAh is the charge hold value and it doesn't matter if I get a cell with a higher value? Anyway, any idea where I can get a replacement, have looked in Maplins but to no avail. Thanks David |
#2
Posted to alt.electronics
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UK 8.4v 30mAh NiCd Cell
Its actually a battery pack, just realised, with the small size cells
inside, it is about AAA size. David wrote: Hi, My ageing smoke alarm needs a new 8.4v 30mAh NiCd Cell (about the size of an AAA battery) with flat top. I'm not really clued up on electronics. I assume the 30mAh is the charge hold value and it doesn't matter if I get a cell with a higher value? Anyway, any idea where I can get a replacement, have looked in Maplins but to no avail. Thanks David |
#3
Posted to alt.electronics
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UK 8.4v 30mAh NiCd Cell
David wrote:
Its actually a battery pack, just realised, with the small size cells inside, it is about AAA size. David wrote: Hi, My ageing smoke alarm needs a new 8.4v 30mAh NiCd Cell (about the size of an AAA battery) with flat top. I'm not really clued up on electronics. I assume the 30mAh is the charge hold value and it doesn't matter if I get a cell with a higher value? Anyway, any idea where I can get a replacement, have looked in Maplins but to no avail. You could probably buy a more sensitive alarm (complete with a hush button this time) for less than the battery. geoff |
#4
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UK 8.4v 30mAh NiCd Cell
After some investigation I think you are right. The batteries will
probably cost £10.00 each perhaps more, the alarms probably £30.00 but they should be better newer techonolgy. Geoff wrote: David wrote: Its actually a battery pack, just realised, with the small size cells inside, it is about AAA size. David wrote: Hi, My ageing smoke alarm needs a new 8.4v 30mAh NiCd Cell (about the size of an AAA battery) with flat top. I'm not really clued up on electronics. I assume the 30mAh is the charge hold value and it doesn't matter if I get a cell with a higher value? Anyway, any idea where I can get a replacement, have looked in Maplins but to no avail. You could probably buy a more sensitive alarm (complete with a hush button this time) for less than the battery. geoff |
#5
Posted to alt.electronics
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UK 8.4v 30mAh NiCd Cell
David wrote:
After some investigation I think you are right. The batteries will probably cost £10.00 each perhaps more, the alarms probably £30.00 but they should be better newer techonolgy. Jeepers - domestic smoke alarms cost around UKP 4.00 here in NZ ! Newer ones are probably a bit less radioactive than t older ones too.... geoff |
#6
Posted to alt.electronics
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UK 8.4v 30mAh NiCd Cell
"David" wrote in message om... Hi, My ageing smoke alarm needs a new 8.4v 30mAh NiCd Cell (about the size of an AAA battery) with flat top. I'm not really clued up on electronics. I assume the 30mAh is the charge hold value and it doesn't matter if I get a cell with a higher value? Anyway, any idea where I can get a replacement, have looked in Maplins but to no avail. Best not to switch to different battery types unless you can get the exact same voltage. I did that, and the alarm kept going off. For the price of a new smoke alarm, get a new one. I wouldn't trust my life to an "aging smoke alarm." I recently discovered that my 3-year old alarm wasn't working anymore, when I heard a faint beeping sound, barely audible, and traced it back to my smoke alarm. Humidity had corroded the speaker, and I didn't know it. |
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