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If the power supply functioning correctly, bring the charger in
for repair to an authorised service centre!
2. Slide the accumulator [B1] all the way into the charger.
3. The red LED will light up and the green LED [N2] will start flash‑
ing to indicate that the accumulator is charging.
4. After approximately 60 minutes, the accumulator should be
fully charged, indicated by the green and red LED staying lit
without flashing.
5. Remove the accumulator from the charger. If you do not wish
to charge another accumulator, disconnect the charger from
the power source.
Overview of LED charging indicator signals [N2]:
Green LED
Red LED
off
on
flashing
on
on
on
off
flashing
alternately flashing
8.1 New batteries:
Battery capacity may be slightly smaller than the listed value dur‑
ing the first few initial charge cycles. The reason is that the chem‑
ical composition of the batteries has not been activated yet. This
is a temporary issue and will resolve on its own after a few charge
cycles.
Note:
• A blinking green indicator means that the battery is fully
charged or that it is in slow charge mode, which maintains
a low charge level of the battery.
• The initial battery charge may take longer then 60 minutes
(according to battery capacity) depending on the environment
temperature, the power supply and the current charge level.
• If you are not using the charger, please unplug it from the pow‑
er source.
8.2 Important information about the
charging process:
1. To get the best out of the batteries in terms of longevity and
performance is to charge them at an ambient temperature of
18 °C to 24 °C. DO NOT CHARGE the batteries at temperatures
below 0 °C and above 45 °C. This is very important. You will
prevent serious battery damage.
• Do not charge the batteries in direct sunlight, especially in the
summer! You will prevent extreme overheating, which could
damage them!
2. If a battery that is too cold (below 0 °C) is inserted into the
charger, the charger will not begin charging it right away;
instead, the green and the red indicator light will begin blink‑
ing. Once the battery reaches the right temperature naturally
(within the standard range), the fast charge process will begin
automatically.
• If an accumulator that is too hot (over 45°C) is placed in the
charger, the charger will not begin charging right away; in‑
stead, the red indicator will start flashing. Once the accumula‑
tor temperature drops to within the standard range, the quick
charging process will begin automatically.
3. If the accumulators cannot be charged properly (the green and
red indicators are alternating):
• Check that the battery contact surfaces are not dirty. Clean
them with a cotton wad and alcohol as needed.
• If the battery is still not charging properly, send or bring the
charger (including the batteries) to your nearest authorised
service centre.
4. Under certain conditions and if the charger is connected to
power, foreign material may short circuit the charge contacts
inside the charger. Foreign conducting substances, such as
steel fibres, aluminium foils or metal deposits must be re‑
moved from the charger continuously. Always unplug the
charger from power prior to cleaning.
Meaning
connected to a power source
accumulator is charging
accumulator is charged
charger or battery temperature
too high
accumulator is damaged
5. If you are carrying out several different charge operations one
after the other, the charger may become hot. This is normal
and is not a sign of a technical problem.
6. Prevent liquid from getting inside the charger as it could cause
an electrical injury. Do not place the battery in a hot environ‑
ment if you wish to facilitate the battery cool down process.
7. Accumulator batteries can remain plugged into the charger
without a risk of damage to them or the charger itself. The bat‑
teries will remain fully charged in the charger. DO NOT LEAVE
charged batteries in the charger if the charger is not plugged
into the power outlet.
8. DO NOT USE ACCUMULATOR BATTERIES if they are damaged
or if liquid leaks out of the cells. If the battery liquid comes
into contact with your skin, immediately flush the area with
water and monitor the skin's reaction. Seek medical attention
if needed. If it comes into contact with your eyes, flush them
with lots of water and immediately seek medical attention.
9. If you are charging a fully discharged battery or if you stop
charging the battery before it is fully charged, you must count
each of these cycles as an entire charging cycle.
8.3 Note on Lithium-ion (Li-Ion) batteries
• These types of batteries do not have a memory effect, in other
words, the batteries can be charged at any state of discharge. If
you take the batteries out of the charger prior to fully charging
them, it will not damage them.
• Each Li‑Ion battery is equipped with deep discharge protec‑
tion. If the voltage falls (due to overloading or discharge) be‑
low the monitored range, the electronic circuit will disconnect
the cells. The machine will then either work intermittently
or not at all. You must reduce machine load or recharge the
battery.
8.4 Storing lithium-ion batteries
• Store fully charge batteries in a dry and dust‑free environment
at an ambient temperature between 5 °C and 40 °C. If you are
not using the batteries for a longer period of time, we recom‑
mend you charge them fully once every three months.
• Keep the battery contacts clean. Do not store the replacement
battery together with metal items as it may cause a short
circuit.
• It is always necessary to charge batteries that were not used for
a long time prior to use.
8.5 Transporting lithium-ion batteries
As per legal regulation, lithium‑ion batteries fall into the hazard‑
ous load category. These batteries must be transported while com‑
plying with local, national, as well as international guidelines and
regulations.
• Consumers may transport these batteries on public roads
without a problem.
• Commercial transportation of lithium‑ion batteries by trans‑
portation companies must comply with the regulation on
hazardous load transportation. Only trained personnel may
carry out the preparation and the actual transport. The entire
process must have expert supervision.
The following must be maintained during battery
transportation:
• Make sure that contacts are protected and isolated to prevent
a short circuit.
• Be careful so that a large number of batteries do not move
around or fall and collapse during transport.
• Damaged and leaking batteries cannot be transported.
Please contact your carrier for additional information.
Warning!!
It is not expected for the user to perform any service repairs on the
charger. There are no spare parts inside the charger, which users
could repair on their own. It is necessary to bring the charger to
your nearest authorised service centre to prevent damage to spare
parts, which are sensitive to static electricity, for example.
Always use the right set of batteries (the set delivered with the
tools or a replacement set recommended by Narex s.r.o.). Never
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