NiMH or Lithium?

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Joined: 05/10/2019
Location: United Kingdom
Posts: 4772
Posted: 09:26am 21 Mar 2023      

A lot depends on installation conditions with batteries, particularly the temperature. Ordinary alkaline cells can make excellent backup supplies here in the UK as they are relatively cheap and will operate down to low temperatures, where some other chemistries start to lose their capacity.