Store batteries in a dry location with low humidity, no corro-
sive gases, and at a temperature range of -20°C to +45°C.
Storing batteries in a location where humidity is extremely
high or where temperatures fall below -20°C or rise above
+45°C can lead to the rusting of metallic parts and battery
leakage due to expansion or contraction in parts composed
of organic materials.
Because long-term storage can accelerate battery self-
discharge and lead to the deactivation of reactants, locations
where the temperature ranges between +10°C and +30°C are
suitable for long-term storage.
When charging for the first time after long-term storage,
deactivation of reactants may lead to increased battery voltage
and decreased battery capacity. Restore such batteries to
original performance by repeating several cycles of charging
When storing batteries for more than 1 year, charge at least
once a year to prevent leakage and deterioration in perform-
ance due to selfdischarging.
Batteries used under proper conditions of charging and
discharging can be used 500 cycles or more. Significantly
reduced service time in spite of proper charging means that
the life of the battery has been exceeded.
Also, at the end of service life, an increase in internal resist-
ance, or an internal short-circuit failure may occur. Chargers
and charging circuits should therefore be designed to ensure
safety in the event of heat generated upon battery failure at
the end of service life.
Because batteries are chemical products involving internal
chemical reactions, performance deteriorates not only with
use but also during prolonged storage.
Normally, a battery will last 2 years (or 500 cycles) if used
under proper conditions and not overcharged or overdis-
charged. However, failure to satisfy conditions concerning
charging, discharging, temperature and other factors during
actual use can lead to shortened life (or cycle life) damage to
products and deterioration in performance due to leakage and
shortened service life.
Never solder a lead wire and other connecting materials
directly to the battery, as doing so will damage the battery’s
internal safety vent, separator, and other parts made of
organic materials. To connect a battery to a product, spot-
weld a tab made of nickel or nickel-plated steel to the
battery’s terminal strip, then solder a lead wire to the tab.
Perform soldering in as short a time as possible.
Use caution in applying pressure to the terminals in cases
where the battery pack can be separated from the equip-
Because small amounts of alkaline electrolyte can leak from
the battery seal during extended use or when the safety vent
is activated during improper use, a highly alkaline-resistant
material should be used for a product’s contact terminals in
order to avoid problems due to corrosion.
(Note that stainless steel generally results in higher contact resistance.)
Excessively high temperatures (i.e. higher than 45°C) can
cause alkaline electrolyte to leak from the battery, thus
damaging the product and shorten battery life by causing
deterioration in the separator or other battery parts. Install
batteries far from heat-generating parts of the product. The
best battery position is in a battery compartment that is
composed of an alkaline-resistant material which isolates
the batteries from the product’s circuitry. This prevents
damage that may be caused by a slight leakage of alkaline
electrolyte from the battery.
The discharge end voltage is determined by the formula given
below. Please set the end voltage of each battery at 1.1 volts
Overdischarging (deep discharging) or reverse charging
damages the battery characteristics. In order to prevent
damage associated with forgetting to turn off the switch or
leaving the battery in the equipment for extended periods,
preventative options should be incorporated in the equip-
ment. At the same time, it is recommended that leakage
current is minimized. Also, the battery should not be shipped
inside the equipment.
Panasonic assumes no responsibility for problems resulting
from batteries handled in the following manner.
Never disassemble a battery, as the electrolyte inside is
strong alkaline and can damage skin and clothes.
Never attempt to short-circuit a battery. Doing so can damage
the product and generate heat that can cause burns.
Disposing of a battery in fire can cause the battery to rupture.
Also avoid placing batteries in water, as this causes batteries
to cease to function.
Never solder anything directly to a battery. This can destroy
the safety features of the battery by damaging the safety vent
inside the cap.
Never insert a battery with the positive and negative poles
reversed as this can cause the battery to swell or rupture.
Never reverse charge or overcharge with high currents (i.e.
higher than rated). Doing so causes rapid gas generation and
increased gas pressure, thus causing batteries to swell or
Charging with an unspecified charger or specified charger
that has been modified can cause batteries to swell or
rupture. Be sure to indicate this safety warning clearly in all
operating instructions as a handling restriction for ensuring
Always avoid designing airtight battery compartments. In
some cases, gases (oxygen, hydrogen) may be given off, and
there is a danger of the batteries bursting or rupturing in the
presence of a source of ignition (sparks generated by a motor
Do not use a battery in an appliance or purpose for which it
was not intended. Differences in specifications can damage
the battery or appliance.
Nickel, stainless steel, nickel-plated
Tin, aluminum, zinc, copper, brass,
1 to 6 (Number of batteries x 1.0) V
7 to 12 (Number of batteries - 1) x 1.2) V