Hello Zuiks,
Olympus has published in the Olympus Magazin 2/85 and 4/85 folowing
interresting informations:
Best batteries for the OM camera:
Camera: OM10 OM20 OM-2n OM-3 OM-4 OM-2SP
Battery:
Alkali-
mangan + + 0 0 0 0
LR44
Lithium + + 0 0 - -
2L76
Silver-
oxid ++ ++ ++ ++ ++ ++
SR44
++ = best suitability
+ = suitable
0 = in emergency, change if posible
- = not suitable
There was an explaination why alkal mangan cells, LR44, are
uneconomical:
Volts
1.6 *
+***************
1.5 + ***
+ *
1.4 + *
-------+---------------*----- Lock up voltage
1.3 ++ *
++ *
1.2 ++++ *
++++ *
1.1 ++ *
++*
1.0 +
Time----------------------->
*** = Silveroxid discharging curve
+++ = Alkalimangan discharging curve
The mirror of an OM-4 will lock up at an voltage of 2.65V
(2.65V/2=1.32V).
If cold was the reason for the voltage drop, the mirror will be unlocked
after the battery has recovered and the voltage has risen to 2.9V =
1.45V per cell.
As you can see, due to the unfavorable discharging curve, the OM-4 will
only use a part of the capacity of the alkalimangan cells. Silveroxid
cells will be more economical, because most of the capacty could be used
by the OM-4.
Richard
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