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The NOKOSER A2 is a universal intelligent charger compatible with almost all rechargeable batteries on the market, thus eliminating the need to own several chargers. The A2 is able to automatically indentify Li-ion, Ni-MH and Ni-CD batteries and apply an appropriate charging mode (CC, CV and dV/dt).

Product Video


NOKOSER   Intelligent Charger   A2 User Manual


The NOKOSER A2 is a universal intelligent charger compatible with almost all rechargeable batteries on the market, thus eliminating the need to own several chargers. The A2 is able to automatically indentify Li-ion, Ni-MH and Ni-CD batteries and apply an appropriate charging mode (CC, CV and dV/dt). Each of the A2’s two microcomputer-controlled charging slots is capable of monitoring and charging batteries independently. Additionally, charging status indicator lights could visibly indicate battery status and charging progress while an intelligent automatic power-off function terminates current when charging is completed.

The NOKOSER A2: The highly advanced smart charger. It is simple as insert, detect and charge.



Each slot controls independently

Mixed charging mode

Compatibility: various kinds of cylindrical chargeable batteries. Diameter: below 26mm, height: 34-70mm, 3.7V Li-ion and 1.2V Ni-MH/Ni-CD batteries, such as 26650, 22650, 18650, 18490, 17500, 18350, 16340(RCR123), 14500, 10440, AA, AAA, C, SC etc.

Features three charging modes (CC, CV and Trickle Charge)

Automatically detects battery status and selects the appropriate voltage and charge mode

LED displays charging progress for each battery

Features reverse polarity protection

Activated automatically for Li-ion batteries with protection board, which are instantaneous short circuit.

Automatically stopped charging when completed

Over-charge prevention to protect batteries

USB 5V Output Mode (used as Portable Charger for mobile or pad etc.)

Made from durable ABS (fire retardant / flame resistant)

Stainless steel rail is more durable and smooth.

Worldwide voltage, suitable for the whole world.



Input: DC 5V 2.1A

Output Voltage: 4.2V±0.02V/ 1.48V±0.02V  

Output Current: 1000mA±50mA*2 / 2000mA±80mA*1

Compatible with:

Li-ion: 26650, 22650, 18650, 18490, 17500, 18350, 16340(RCR123), 14500, 10440

Ni-MH / Ni-Cd: A, AA, AAA, AAAA, SC, C

Dimensions: 127mm*64mm*30mm

Weight: 94g (Without batteries and power cord)


Operating Instructions

A. Plug one end of the adapter into the A2 charger. Plug the other end of the cord into a wall outlet; all LED indicators twinkle and go off. The logo light is always on.

B. The A2, two charging slots, each slot is able to charge a battery independently. Rechargeable batteries of differing chemistries and voltages can be charged simultaneously using 1 or 2 of the slots.

Note: The A2 is capable of charging Li-ion or1.2V Ni-MH/Ni-CD rechargeable batteries only. See above for description of battery size.

C. When inserting a battery, ensure the positive and negative ends correspond with the positive (+) and negative (-) symbols on the charger. Incorrect installation will result in failure to initiate the charging process.

D. 25% LED fixing that indicates battery charged by 25%; 50% LEDs fixing that indicates battery charged by half; 75% LEDs fixing that indicates battery charged by 75%; 100% LED fixing that indicates charging is completed.


Battery Activation

For every installed battery, the A2 will activate the battery by charging it. Activate automatically for Li-ion batteries with protection board, which are instantaneous short circuit. If activation fails the first time, please remove and reinstall the battery once again and activate for the second time.

The Ni-MH batteries, below 0.4V, cannot be charged.

Note: The A2 is not recommended for use with over-discharged (zero volt) UNPROTECTED Li-ion batteries.


USB Output Mode

Used as Portable Charger for mobile or pad etc.

A. When putting 1 Li-ion battery and no other input, the max output current of USB is 1000mA.

B. When putting 2 Li-ion batteries and no other input, the max output current of USB is 2000mA.

Note: When no inputting, please do not reverse the battery, otherwise it will damage the charger.



1.The A2 is compatible with batteries of varying sizes, therefore when charging certain batteries (such as 26650, AAA and AAAA), manual adjustment of the battery’s position within the slot is recommended, as to ensure solid contact is made between both sides of the battery and the charging slot’s metal contact points.

2.The A2 is restricted to charging 3.7V Li-ion and Ni-MH/Ni-Cd rechargeable batteries only. Never use the A2 with other types of batteries as this could result in battery explosion, cracking or leaking, causing property damage or personal injury.

3.The A2 should only be used indoors or inside a motor vehicle and it cannot be use or store in the water, high humidity, direct sunlight and low or high ambient temperatures.

4.Do not disassemble or modify the charger.

5.Children under the age of 18 should be supervised by an adult when using the A2.

6.The A2’s safe operating temperature is between 0℃--40℃.


Warranty Service

All NOKOSER® products enjoy a comprehensive after-sales warranty service. A malfunctioning NOKOSER® A2 charger may be exchanged for a replacement by a local authorized distributor/dealer within the first 15 days of receipt by the end user. After 15 days and up to 12 months, the A2 may be sent to an authorized distributor/dealer for repair. Beyond 12 months, the warranty covers labor costs and maintenance with the exclusion of accessories or replacement parts.

The warranty is nullified in any of the following situations.

1.The product(s) is/are broken down, reconstructed and/or modified under unauthorized conditions.

2.The product(s) is/are damaged through improper use.

3.The product(s) is/are damaged by leakage of batteries.

For further details of NOKOSER’s warranty service, please contact a regional distributor/dealer.

Note: The NOKOSER official website shall prevail in case of any product data changes.



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