Glacier 4000mAh 2S 7.4V LiPo Transmitter Battery Fits DX9 RadioMaster

GlacierSKU: GLC-TX-4000-2S

Sale price$26.99

Customer Reviews

Based on 15 reviews

Great product.

Jef F.
Great battery for Radiomaster TX16S

Another great battery from Glacier.

Adam C.
Good replacement battery.

I purchased this battery to replace a similar one from a different brand. It fit just fine and performs well. It is slightly longer than the old battery (1 mm difference) but not a problem. Quiet happy with the performance.


Glacier 4000mAh 2S 7.4V LiPo Transmitter Battery Fits DX9 RadioMaster

Perfect fit in Radiomaster TX16S!!!

This LiPo fits perfectly in my Radiomaster TX16S transmitter. I had been using a pair of 18650 batteries that I had laying around the house, but they are old and started losing charge at a stunning rate. This Glacier 4000mAh LiPo was my solution, and it's doing a much, much better job!

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Read shipping regulations before buying lithium polymer batteries.

USA customers:
All types of Lithium ion batteries, such as LiPo, LiFe, A123, LiHV, etc. can only be shipped by ground
. Any selection of other shipping methods, such as UPS Next Day Air, will be downgraded to ground by our shipping department without further notice. The difference in shipping cost will be refunded after your package is dispatched.

International customers:
Due to regulations on lithium ion batteries, we CANNOT ship this product outside of USA except Canada and Mexico, and the only choice to ship batteries to these two countries is by UPS Ground shipping. Selection of other shipping method will not go through our shipping department and may lead to cancellation of your order.


Quality Glacier LiPo batteries are made by a specialized factory that also manufactures packs for well-known premium brands. Glacier batteries are great for sport and 3D pilots as well as competition drivers.

The following characteristics make Glacier batteries stand out from competitor products sold at lower prices from overseas dealers and many name brands sold at higher prices domestically. 

  • Only the highest grade cells are used to assemble Glacier battery packs.
  • Conservative C rating. Glacier 30C and 35C batteries outperform many 40C and 45C batteries in the market.
  • Higher discharge platform, less voltage sag. You will feel more power during high discharge current situations, such as 3D flight.
  • Better temperature control technology. After high-rate discharge, Glacier batteries are cooler than most competitors labeled the same C rating.
  • Longer cycle life.
  • Better quality control. In addition to the manufacturer’s strict QC and QA systems, we check the voltage of every single battery with a capacity greater than 800mAh before we send out your order.


More Information
Discharge Rating (C) 5C
Capacity (mAh) 4000mAh
Number of Cell(s) 2
Dimensions 70 x 50 x 18 mm
Recommended Charge Rate 8A (2C)
Fast Charge Rate 26.5A (5C)
Balance Connector XH (also called JST-XH, Align type, the most popular type in the market)
Power Connector FIT DX9
Net Weight 145g, 5.1 oz

Glacier batteries are covered by 90 days limited warranty, handled by Buddy RC at Columbus, Ohio.

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