The NOKOSER A4 is a universal intelligent charger compatible with almost all rechargeable batteries on the market, thus eliminating the need to own several chargers. The A4 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 A4’s four 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 A4: The highly advanced smart charge. 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
Features 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)
A. Plug one end of the adapter into the A4 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 A4 features four charging slots, with each slot able to charge a battery independently. Rechargeable batteries of differing chemistries and voltages can be charged simultaneously using 1, 2, 3 or 4 of the slots.
Note: The A4 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 completing.
For every installed battery, the A4 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 A4 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 A4 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 A4 is restricted to charging 3.7V Li-ion and Ni-MH/Ni-Cd rechargeable batteries only. Never use the A4 with other types of batteries as this could result in battery explosion, cracking or leaking, causing property damage or personal injury.
3.The A4 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 A4.
6.The A4’s safe operating temperature is between 0℃--40℃.
All NOKOSER® products enjoy a comprehensive after-sales warranty service. A malfunctioning NOKOSER® A4 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 A4 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.