Availability: 7 In Stock
Sku: JNS-406Duo

iCharger 406 DUO Manual

This dual port charger equipped with a color LCD screen can charge different batteries up to 40A in asynchronous mode or up to 70A in synchronous mode. The iCharger 406 Duo is the downsized sibling of the popular and extremely powerful iCharger 4010 Duo. Instead of charging 10S batteries up to 40A, the iCharger 406 Duo can handle up to 6 cell LiPo packs up to 40A. These two chargers share the same operation interface and functions, including battery internal resistance measurement, servo tests, and pulse tests. The charge and discharge data can be stored in a micro SD card and read using Logview on a PC. Boasting a power output capacity of 1400W and 40A with dual ports, the iCharger 406 maintains iCharger's outstanding reputation for manufacturing compact and powerful charging stations.

This charger MUST be used with a stable power supply. Avoid use with an automobile or multiple server power supplies in a series. 
These chargers will arrive with a very thin but effective protective cover on the screen. If your screen appears scratched upon arrival, use either a fingernail or a precision knife to carefully peel off the protective layer from the side of the screen. 

Why choose iCharger?
With the best power-to-cost ratio on the market, iChargers are immensely powerful but also compact and convenient. iChargers feature accurate cutoff voltage, rapid balancing speed, and compatibility with almost all types of batteries used in RC hobbies. Various versatile functions and extra features are also available, providing an adaptable and flexible platform for all your hobby needs. They're also easier to operate than our competitors' products, further enhanced by our excellent technical support. It should come as no surprise, then, that iChargers have become a favorite among hardcore RC hobbyists over the years.

Why buy from Buddy RC?
As an authorized iCharger USA distributor and one of the first American iCharger dealers, having served iCharger users since 2009, we offer the best prices and the most reliable services available. While our prices may appear to be the same or higher than other dealers at first glance, we offer various other types of discounts such as free adapter boards and ParaBoards as well as free shipping to customers in the USA. We provide excellent customer service and technical support over phone and e-mail. Because we also personally love and use iChargers all the time, we thoroughly understand the workings of the chargers and can easily assist you with any questions or concerns. The warranty is non-transferable and is handled by Buddy RC in Columbus, Ohio, USA. You'll never have to hassle with overseas manufacturers or dealers. 


Input voltage range: 10.0a,”30.0VDC 140W (Channel 80W)
Maximum regenerative discharge power capacity: 1400W (Channel 1000W)
Maximum extra discharge power capacity: 2000W (Channel 1000W @25V/40A) Maximum current drain for balancing: 2.4A in Syn. Mode; 1.2A in Asyn. Mode
USB charging port: 5V/1A (current-limiting protection), 1.2A
PC Connectivity: USB port
Dimensions: 171 x 118 x 59 mm
Net Weight: 910g

Extra functions: 

  • Battery internal resistance measurements
  • Servo test
  • Pulse test
  • Store and read data from micro SD (TF) cards

Orders are shipped from Columbus, the capital city of Ohio, USA.

An order placed before 2:00pm Eastern Standard Time will be shipped the same working day.

We ship on Monday-Friday by US postal service (USPS) and UPS, and Saturday morning by USPS if a local post office is open. Any order placed on Saturday morning may or may not be shipped the same day. Orders placed on Sunday and US holidays will be shipped the next working day.


Retail orders above $80 may be eligible for free shipping, including contiguous United States, Alaska, Guam, Hawaii, Puerto Rico, and APO addresses. We will use either USPS or UPS that most packages can be delivered in 3-5 working days, but not guaranteed. However, for packages contain large and heavy items, such as power supply, we may use parcel post service or UPS Surepost that may take up to 7 working days to be delivered.

USPS First Class Mail and Priority Mail, Express Mail, and UPS services can be used for domestic addresses. Tracking number and delivery confirmation will be provided to the customer when they are available. If you have not received a tracking information E-mail, please log into your account and click the "view order" link, then click "Track your order" link to find out the tracking number and ship method.

USPS Priority Mail is typically delivered in 3 working days. But very occasionally a priority mail package may be delayed for several days in the mailing system. If delivery time is extremely critical to your order, we would recommend Priority Mail Express or other couriers.

Domestic First Class Mail is only 1-2 days slower than Priority Mail in delivery. We suggest domestic customers choose First Class Mail for an order under 15 oz to save shipping cost.

Real shipping cost is calculated according to package weight and distance, and can be found in the checkout page after delivery address is specified in the fields.

Any order of $200 and above requires addressee's signature confirmation upon receipt of the package. Please contact us in advance or leave a comment in the message box if you want to waive signature confirmation.

We always check the legality of potential fraudulent orders. This procedure may lead to 1-2 working days delay in shipping in some rare cases.

We do not ship products to shipping forwarding companies. Any order shows this kind of address will be cancelled and refunded without notification.


DHL, DHL Express, US Postal Service (USPS) First Class Mail, Priority Mail, and Express Mail (EMS), and UPS services can be selected for international addresses. Shipping cost is calculated according to package weight and distance, and can be found in the check out process. A package usually takes around 7-10 days to be delivered, or occasionally up to 45 days depending on the processing speed in your country, especially in some countries such as Brazil and Russia.

USPS First Class Mail is a budget shipping method. As soon as a First Class Mail package left USPS Chicago hub there will be no tracking information available. If you need detailed tracking information and timely delivery please do not use this shipping method.

Presently we cannot ship lithium batteries internationally by US Post Service or any other air shipping method. Please select UPS Ground if your order contains LiPo or LiFe battery.

We do not ship products to shipping forwarding companies. Any order shows this kind of address will be cancelled and refunded without notification.

iCharger 406 Duo 1400W 40A 6S Dual Port Charger

Customer Reviews

Based on 16 reviews
James M.

iCharger 406 Duo 1400W 40A 6S Dual Port Charger

Daniel F.
406 duo

Easy transaction and fast shipping will do buisness with you again

Scott F.
Very happy

Loved it fast shopping too

Mark H.
Charger purchase

Very fast shipping. Everything went smoothly.

C. N.
Top notch quality as always

I’m a huge fan of iChargers. I have several, but my trusty, 12 year old 308 duo that saw a lot of abuse eventually started being a little quirky on one of the channels. I decided to replace it with a 406 duo since the extra amperage for 6S is more useful to me than the ability to charge 8S. I’m extremely happy with this one as it dropped right into my existing custom charge case. I fully expect this one will last me another 12+ years. Thanks BuddyRC for the prompt service.

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