NITECORE UMS4 Benutzerhandbuch Seite 5

(English) UMS4 User Manual
distributor/dealer within the 15 days of purchase. After 15 days, all defective /
malfunctioning NITECORE products can be repaired free of charge for a period of
®
12 months (1 year) from the date of purchase. Beyond 12 months (1 year), a limited
warranty applies, covering the cost of labor and maintenance, but not the cost of
accessories or replacement parts.
The warranty is nullified if the product(s) is/are:
1. broken down, reconstructed and/or modified by unauthorized parties
2. damaged from wrong operations (i.e. reverse polarity installation, installation of non-
rechargeable batteries or failure to obey the warnings)
3. damaged by batteries leakage.
For the latest information on NITECORE
NITECORE distributor or send an email to service@nitecore.com.
®
※ All images, text and statements specified herein this user manual are for reference
purpose only. Should any discrepancy occur between this manual and information
specified on www.nitecore.com, information on our official website shall prevail.
SYSMAX Innovations Co., Ltd. reserves the rights to interpret and amend the content
of this document at any time without prior notice.
Safety Instruction for Lithium-ion Batteries
1. Charging Voltage
Lithium-ion (Li-ion) batteries have strict requirement on voltage control. Charging Li-ion
batteries with electric voltage beyond safety standard can lead to battery damage and
explosion.
(1) 3.7V Li-ion Batteries / IMR Batteries
3.7V Li-ion batteries are the most common rechargeable Lithium batteries. The skins
of these batteries are often marked with 3.6V/3.7V signs. If our chargers judge that
an inserted battery is a Li-ion battery, the battery will be automatically charged in 4.2V
standard charging mode. You do not need extra voltage settings for these types of
batteries.
(2) 3.8V Li-ion Batteries
3.8V Li-ion batteries are comparatively rare. It usually has a 3.7V mark on its skin.
Normally its seller will inform its buyer that it needs to be charged with 4.35V power.
When charging this type of battery, please manually set the charging voltage to 4.3V,
otherwise the charger will charge at 4.2V by default, and cannot provide adequate
charging voltage.
(3) 3.2V LiFePO4 Batteries
3.2V LiFePO4 batteries have LiFePO4 and/or 3.2V marks on the skin. Be careful with
this type of batteries. Without manual setting, our chargers will charge this type
of batteries with 4.2V, and will damage or even explode the battery with excessive
charging voltage. You need to manually set the charging voltage to 3.7V for safe
charging.
2. Charging Current
For all rechargeable Lithium batteries (including Li-ion, IMR and LiFePO4 batteries), we
suggest not using current larger than 1C* for charging. For small capacity batteries, the
charging current must be smaller than 1C.
* C=Capacity of a battery. For example, 1C in a 2600mAh rechargeable Lithium battery is
2.6A. 1C in a 3400mAh rechargeable Lithium battery is 3.4A.
Excessively large charging current will lead to great amount of heat, and consequently
battery damage and explosion.
products and services, please contact a local
®
-6-
Warning: Our chargers automatically judge and select charging current by the
batteries' length. For some long but small capacity batteries (i.e. 12650, 13650,
14650, 16650), please manually set appropriate charging current (smaller than
1C).
3. Precautions
(1) DO NOT short circuit the battery in any way.
(2) DO NOT use a 3.7V/3.8V Lithium battery when its voltage is lower than 2.8V,
otherwise it can be over-discharged, and/or prone to explosion at next charging.
(3) We strongly recommend batteries with protective circuit. For batteries without
protective circuit (such as IMR batteries), please stay alert for over-discharge and
short circuit.
(4) DO NOT discharge a battery with a discharging current larger than its maximum rated
current.
4. Long-term Storage
The best storage voltage for 3.7V/3.8V rechargeable Lithium batteries is 3.7V. Voltage too
low or too high can damage your battery during storage. You can discharge a battery to
3.7V, or charge it to 3.7V in a charger before you keep it in long-term storage.
Validation code and QR code on package can be verified on NITECORE website.
The charger must be used with NITECORE's official cords. Official cords are
identified with clearly printed NITECORE on the plug. During charging, third
party cords can cause malfunction, overheat and even fire on the charger.
Damages from using unofficial cords cannot be covered by official warranty.
The charger is restricted to charging Li-ion, IMR, 3.2V LiFePO4, Ni-MH/Ni-
Cd rechargeable batteries only. DO NOT use the charger with other types of
batteries as this could result in battery explosion, cracking or leaking, causing
property damage and/or personal injury.
-7-