Spektrum RC S120 USB-C Smart Charger (3S/20W)

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Spektrum RC S120 USB-C Smart Charger (3S/20W)
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The Spektrum S120 USB-C Smart Charger features Spektrum Smart Charging technology in a small and simple to use platform. This 20W charger easily charges compatible Spektrum Smart batteries conveniently from almost any USB power source. When a Spektrum Smart battery is connected, the S120 immediately detects the battery information and automatically begins to charge. Spektrum Smart charging is designed to be safe, intuitive and convenient so you can simply look forward to putting your batteries back to action! 

Charging is easy with the Spektrum S120 USB-C Smart Charger. Simply use the included USB cable to supply power to the S120 Smart Charger from a USB power source (not included). Plug in your Spektrum Smart battery (Lipo versions require the balance lead to be connected as well as the main lead) and the charger will automatically start charging. Monitor your charging status via a blinking purple or yellow LED. Once your charging is complete the LED will glow green. 

Spektrum Smart Charging virtually eliminates the hassle from charging your LiPo batteries. This is made possible by an integrated microchip on each Smart battery that communicates with your Smart charger to automatically determine the best charging settings. While all hobbyists will enjoy this simple experience, advanced hobbyists can take advantage of unique data such as cycle count, unhealthy activity like overcharge and discharge, battery temperature, C rating and much more, all saved within each battery. Additionally, automatic discharge to storage ensures a better, and healthier, lifespan for your batteries.


  • Easily charges compatible smart batteries from convenient USB power (power supply not included) 
  • Automatically detects smart battery information and begins charging when connected 
  • Compatible with 2-3 cell Smart LiPo Batteries

Note: This charger supports IC5 batteries, but does not include the IC5 lead. The IC5 connector (SPMXCA508) is sold separately.

Type: USB ChargerInput:5-12VDC USB charge port, USB type C cable included, power supply required# 
Cells: 2-3 Cell LiPo, 6-7 cell NiMH
Charge Rate: 4.35V per cell x3 for a 3 cell LiHV, 2A, Not selectable
Input Connector: USB
Output Connector: IC3
Battery Type: Only compatible with Spektrum SMART batteries
Length: 2" (51mm)
Width: 2" (51mm)
Height: 0.55" (14mm)


  • (1) S120 USB-C Smart Charger 
  • (1) USB-C to USB Cable 
  • (1) Product Manual

This product was added to our catalog on June 4, 2019

Saturday, Jan 7 2023 (11 months ago)
Spektrum RC S120 USB-C Smart Charger (3S/20W)
I hate this thing. I got it with one of their 2200mah S3 G2 batteries. I plugged it in, and THREE HOURS later, it still hadn't reached 75%, based on the manual saying the number of flashes indicated how far along it was. Disgusted, I plugged the battery into my regular charger and set it to regular Charge instead of Balance (since the G2 batteries have no balance lead), and turned it on. 26 minutes later, it was done.

Don't waste your time or money on this thing.
Blake Rose
Thursday, Jun 22 2023 (5 months ago)
Spektrum RC S120 USB-C Smart Charger (3S/20W)
Terrible charger been charging a 3s lipo for three days now and still blinking three times.

Don't waste your money on this!