Nitecore UMS4 Quad Rapid Smart Charger

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Introducing the NITECORE UMS4 Intelligent USB four-slot superb battery charger designed to recharge your batteries fast, safe and efficiently. A brightly lit LCD display reports real time information including battery health and charging status. The UMS4’s intelligent charging technology automatically applies the appropriate charging current/voltage while allows users to manually adjust the charging current/voltage. The UMS4 supports various battery types (li-ion/imr/lifep04/ni-cd/ni-mh) and common battery sizes including (AA, AAA, 21700, 20700, 18650, 16340,14500 ).
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Product Highlights:

4 Bay Charger
Multiple Charging Speeds - 2.0A x 1, 1.0A x 2, 0.5A x 4 /// QC Mode - 3.0A x 1, 2.0A x 2, 1.0A x 4
Comfortably fits size 20700 and 21700 batteries
Bright digital LCD display shows real time charging information
Built in safety protections to prevent short circuits, overcharging, and improperly inserted batteries

Package Contents:

Nitecore UMS4 Battery Charger
Standard USB Power Cord
User Manual


Intelligent USB 4 Slot Charger
QC 2.0 input available
Capable of charging 4 batteries simultaneously and controlling each slot independently
Up to 3,000mA charging speed in a single slot, 4,000mA total
Compatible with Li-ion and Ni-MH/Ni-Cd batteries with automatic detection
Automatic detection of battery power level and automatic selection of the appropriate voltage and charging mode (LiFePO4 and 3.8V Li-ion batteries excluded)
Automatic selection between 3 charging modes (CC, CV and dV/dt)
Energy-efficient LCD display for real-time charging information
Capable of manually selecting the charging cut-off voltage and the charging current
Automatic detection of large/small capacity batteries and automatic selection of appropriate charging current
Automatic termination upon charging completion
Reverse polarity protection and short circuit protection
Over-discharged battery activation
Li-ion battery restoration
Overtime charging protection
Made from durable and fire-retardant PC materials
Optimal heat dissipation design
Certified by RoHS, CE, FCC and CEC


Dimensions: 159mm x 107mm x 41mm
Input: DC 5V/2A 12V/1.5A 18W (MAX)
Output: 4.35V±1% / 4.2V±1% / 3.7V±1%/1.48V±1%
QC Mode: 3,000mA*1 (MAX) 2,000mA*2 (MAX) 1,000mA*4 (MAX)
Standard Mode: 2,000mA*1 (MAX) 1,000mA*2 (MAX) 500mA*4 (MAX)
Compatible with :
IMR/Li-ion/LiFePO4: 10440, 14500, 14650, 16500, 16340(RCR123), 16650, 17350, 17500, 17650, 17670, 17700, 18350, 18490,18500, 18650, 18700, 20700, 21700, 22500, 22650,25500, 26500, 26650, 26700
Ni-MH/Ni-Cd: AA, AAA, AAAA, C, D

Please have a great understanding and technical knowledge on how to use this product in order to properly use it.

Note: There is always an inherent risk when using any rechargeable batteries at any time and under any circumstances. Cool Water Vapors is not held responsible for any damage for any modification of the batteries, chargers, devices and other products that we carry in any form or shape, this is including pack making.

Cool Water Vapors will not be held responsible or liable for any injury, damage, or defect, permanent or temporary that may be caused by the improper use of a Li-ion (Lithium-ion), LiPo (Lithium-ion Polymer) and any rechargeable battery/batteries as well as chargers. Please have a greater understanding of the batteries/chargers you are using and how to care for them properly.

When working with Li-ion (Lithium-ion), LiPo (Lithium-ion Polymer) and any rechargeable cells, please be cautious and carefully use as they are very sensitive to charging characteristics and may explode or burn if mishandled. Please make sure that you have great knowledge on all rechargeable batteries before you use them. Always charge batteries at the clean and fire-proof surface. Never leave charging batteries unattended. If you see that there are visible damages on the batteries, please do not use. Always keep, store and transport the rechargeable cells in a safe, non-conductive container in a controlled environment

Do not use any rechargeable battery as well as any battery charger if any visible damage is present, as well as if the cell or charger has been stressed through mishandling, accidental or otherwise, even if damage may not be visible. Always store and transport rechargeable cells in a safe, non-conductive container in a controlled environment. Please dispose of battery cells, chargers or any other electronic devices in accordance with local laws and mandates.