Instruction manual

11
Preparations
The life of a set of batteries depends on usage conditions and manufacturers.
Some reference values are shown below.
Battery life (at 23°C) Alkaline batteries LR6 15 hours
Nickel metal-hydride batteries 15 hours
The life of a set of batteries is shown below when the NX-42EX is installed,
Eco setting is ON,
L
eq
calculation interval is 10 min, and L
p
store interval
is OFF.
Battery life (at 23°C) Alkaline batteries LR6 26 hours
Nickel metal-hydride batteries 25 hours
The battery life shortens by 5 % to 50 % when the display backlight continu
-
ously ON (different according to the backlight brightness setting).
When either AC OUT or DC OUT is ON, battery life will be about 25 %
shorter (see page 55 to 56).
When auto store is used, battery life will be 20 to 40 % shorter.
Battery life may also be shorter when the program option is operating.
Important
The rechargeable nickel metal-hydride battery
is not charged by the NL-42/NL-52.
Note
The life of rechargeable nickel metal-hydride battery
depends on the battery type and charge condition.
In the factory default condition, AC OUT is set to
“Inter lock” and DC OUT is set to “ON”.
To extend the battery life, select [System (Language)]
from the menu list screen and set [Eco Setting] (see
page 30), or select [I/O] and set the both AC OUT
and DC OUT to “OFF” (see page 99 to 102).