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SkyRC D400 400W 7 Cell (7S) Ultimate AC/DC Dual LiPo Battery Charger - (OPEN BOX) SK-100123(OB)

SkyRC D400 400W 7 Cell (7S) Ultimate AC/DC Dual LiPo Battery Charger - (OPEN BOX)

$199.00 $19900 Regular price 179.99 $17999 Free Shipping*

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D400 400 Watt 7 Cell (7S) Ultimate AC/DC Dual LiPo Battery Charger from SkyRC - OPEN BOX

Open Box Details:

  • Missing Parts: Manual
  • Damage/Defects: Factory Refurbished. General signs of use/repair. Gift box slightly damaged in shipment.
  • Builder Notes: All issues are simple cosmetic fixes and will not affect performance.

Please Note: Because of their deeply discounted prices, Open Box merchandise does not include the standard Motion RC warranty and cannot be returned or exchanged even if additional product issues are found. Please consider these restrictions before purchasing Open Box products.

Motion RC is pleased to present the SkyRC D400 Ultimate Duo 400 Watt AC/DC twin-channel charger with two independent circuits which can charge two different kinds of batteries simultaneously. It also supports power distribution in AC mode to get max charging power to shorten charging time. What’s more, users could set the terminal voltage by themselves and connect it to their PC for configuration and firmware upgrades. Users could also use it as Lithium Battery Meter and Battery Internal Resistance Meter. What's more, the synchronization mode is available, in which users could perform synchronous settings for charging the same types of batteries simultaneously to offer time-saving benefits.

The SkyRC D400 can supply 150 Watts of DC power on channel 2. You can use it to power equipment that requires DC power. It converts standard household power 100-240V AC to 6-15V DC power.

The SkyRC D400 charger is a high-performance, micro processor control charge/ discharge station with battery management suitable for use with all current battery types, with integral equalizer for up to seven-cell Lithium-Polymer (LiPo), Lithium iron phosphate (LiFe) and Lithium-Ion (LiIon) batteries; maximum 20A charge current and maximum 400W charge power. The additional LiHV mode is able to charge the new generation of LiPo batteries with an end of charge voltage 4.35V. There are Automatic Charging Current Limit, Capacity Limit, Temperature Threshold and Processing Time Limit which makes the charger safe to use.

Note: We recommend reading this Motion RC knowledge blog article about charger amperage and wattage ratings.


  • Charge two different types of batteries simultaneously
  • Easy to configure and update firmware through a PC
  • 20 Amp maximum charge current with 400 watts of charge power
  • Supplies 150 watts on Channel 2 to power DC devices
  • Charges up to 7 Cell 25.9V LiPo batteries
  • Stores up to 10 charge/discharge profiles for each channel
  • Temperature Threshold keeps the charger/battery from overheating


  • SkyRC D400 20 Amp 7 Cell (7S) Ultimate AC/DC Dual LiPo Battery Charger
  • 2 XH Adaptors
  • 2 Charging Cables 
  • 2 Banana connectors with XT60 connector Charging Cables
  • Power Cord







  • Never, under ANY circumstances, leave your charger unattended while charging a LiPo battery.
  • Keep the charger away from moisture, dust, direct sunlight, or any heat sources.
  • The charger should always be placed on a heat-resistant, non-flammable surface during charging.
  • Never overcharge or exceed a 1C charge current. A 1C charge current means the charge current equals the capacity of the battery. For example, a 2200mAh battery should never be charged using a current greater than 2.2 Amps (2200mAh).

Product Specifications:

AC Input


DC Input


Charge Circuit Power (AC Input)

Max Total All Channels: 400W
- Max Channel 1: 400W
- Max Channel 2: 200W

Charge Circuit Power (DC Input)

Max Total All Channels: 400W
- Max Channel 1: 400W
- Max Channel 2: 200W

Charge Current Range

Channel 1: 0.1-20.0A
Channel 2: 0.1-20.0A

Max Charge Current

2S LiPo: 20A
3S LiPo: 16.3A
4S LiPo: 12.5A
5S LiPo:10.1A
6S LiPo: 8.5A

Discharge Current Range 0.1-5.0A x2
Discharge Power 36W x2

LiPo/LiFe/Lilon Cells

NiMH/NiCd Cells 1-18S
Pb(Lead Acid) Battery Voltage 2-24V
Dimensions (L x W x H) 258 x 194 x 82.5mm (10.15 x 7.63 x 3.24 in)
Weight 2510g (5.53lbs)

Product Questions & Answers

NOTE: Questions submitted on this page are answered by customers who have previously purchased this item. If you have a support related question that requires immediate assistance, please visit our Help Center.

Product Support

Product Manuals:


If you need any additional assistance, please visit the Motion RC Help Center

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