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Use of rechargeable long life batteries for zwave devices?

Thomas shared this question 11 years ago
Need Answer

Hi,

Is it a good idea to use rechargeable batteries for zwave devices?I know it might be worth to contact directly the manufacturers but I wanted to have your general thoughts on this topic. For instance Fibaro or Everspring recent devices, are they usable with rechargeable long life batteries, because I could notice that the standard batteries last some months (for me at the best 3) than the 1 or 2 years usually announced... (and I tried to play with the parameters such as long retrigger or wakeup times...)ThanksThomas

Replies (5)

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We never use rechargeable batteries in our tests. And indeed, you should ask the manufacturers whether it is safe to use such batteries.


Also note that many manufacturers explicitly state in user manuals of their devices that rechargeable batteries should not be used.

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Why is the use of rechargeable batteries not recommended ? :-?

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Simone Biagini wrote:

Why is the use of rechargeable batteries not recommended ? :-?
1.2V per cell might not be enough if the circuit expects 1.5V per cell. Also self discharge is an issue with some older batteries!

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Ok, I understand the voltage issue.. but if I have rechargable 1,5v battery I think it's the same.. right?

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I am using them successfully. Even though they all report as "critical", they are nothing of the sort. Interestingly they have a higher voltage (than conventional) under zero load than specified.

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