New Minox 35 camera comes with two lithium CR 1/3N batteries.

Older Minox 35 (except ML ) uses 5.6 v mercury PX27
You may also use 6v silver oxide replacement for PX27, S27PX /SPX27
available from

New Minox TLX /CLX comes with an adapter with four 1.5 v silver oxide 386 cells

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