Availability: Out Of Stock
Sku: JNS-308Duo

iCharger 308 Duo Manual

This dual port charger equipped with a color LCD screen can charge different batteries up to 30A in asynchronous mode or up to 50A in synchronous mode. The iCharger 308 Duo is the downsized sibling of the popular and extremely powerful iCharger 4010 Duo. Instead of charging 10S batteries up to 40A, the iCharger 308 Duo can handle up to 8 cell LiPo packs up to 30A. 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 1300W and 30A with dual ports, the iCharger 308B 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. 

Maximum charge power:
1300W in total, or maximum 800W per channel.
Charge current: 50mA-30A per channel, or up to 50A in synchronous mode.
Discharge power: 80W per channel, or 120W in synchronous mode.
Maximum regenerative discharge: 800W per channel, or 1300W in synchronous mode.
Maximum external discharge power capacity: 1050W per channel, or 2100W in synchronous mode.
Balance bleeding current: 1.2A per channel, or 2.4A in synchronous mode.
Voltage readout resolution: 1mV (0.001V).
Internal resistance readout resolution: 0.1.
Ohm Balance accuracy: 10mV.
PC Connectivity: USB port Dimensions: 171 x 118 x 59 mm.
Net Weight: 910g
One-year manufacturer warranty handled by Buddy RC, a major iCharger distributor since 2009.

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 308 Duo 1300W 30A 8S Dual Port Charger

Customer Reviews

Based on 16 reviews
Kevin i.V.
Amazing Charger, needed items missing and not explained in the description.

Amazing powerful charger, just the upgrade I needed over my old trusted icharger 206B.
Wonderful staff, very helpful and knowledgeable.
They will also build you almost any cables you need if you ask, for reasonable fees.
It can be very tough to get them on the phone, especially around Nov-Dec shopping season, they are very busy selling things and doing work, thank you for that!

However, I feel some VERY IMPORTANT things are missing in the description for this icharger 308 Duo (and the 4010 Duo) that should be added in bold text, like the below details, and recommended additional items.

1) This charger comes pre wired with an EC5 on 10AWG wire for your power supply!
Older ichargers, like my trusty 206B, had banana plugs, and removeable alligator clips, going to your power supply, this works with almost anything, and was perfect right out of the box!
This charger does include a separate EC5 to bare wire on 10AWG wire, so you can add your own banana plugs, alligator clips, or if you use some other weird connector for your power supply (never seen anyone do that) Then you connect this EC5 to the ichargers EC5.
icharger should make it like the old ones, with banana plugs and removeable alligator clips, or at least include the above wire for the majority of us that use that, and keep the EC5 to bare wire for those who want to add their own weird plug to their power supply.

Balance cables are size specific, you can NOT plug a 6s balance cable into an 8s port, they don't fit!
You HAVE to buy Buddy RC's 6s to 8s balance cables!

Link for their 6s to 8s cable > https://www.buddyrc.com/collections/balance-cables/products/paraboard-balance-cable-8s-for-208b?variant=30735566831702
Link for their 6s to 10s cable for the 4010 Duo > https://www.buddyrc.com/collections/balance-cables/products/paraboard-balance-cable-10s-for-1010b-3010b-4010-duo?variant=30735566864470


I now have my charger, and can not even charge a single battery with it until my 6s to 8s balance cables get here that I just ordered separately!

Side note: My icharger 308 Duo seems to work fine so far, but out of the box smells to high heavens of burnt electronics!
Maybe that is normal?
I don't recall my 206B from you smelling like this......
Just letting you know guys.

So far that is my initial review, may add more later.

William C.

Great charger!!!

John F.

This is my second 308 charger, and i love it. In my opinion the best on the market. Fast shipping at a great price. I will continue to buy from Buddy RC

Great so far.

Only had the 308 Duo for a few days but have been happy with it so far. I've used ichargers for years and have always appreciated the quality. Stepping up from 106B and 208B. Enjoying the dual ports, the color info screen, and the increased discharge capacity.

Huey N.
Great Charger! Easy to use.

I'm so glad that I finally made the decision to switch to this charger from a Hitec X4. Great user interface, simple button design, and a perfect combination with the V3 paraboards. I use 2 paraboards on each port which can charge and balance 16 of my 3s 2100mah lipos in less than 1hr @ 1C. The amount of time saved is priceless. Less time charging and more flying time at the field!

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