rc helicopter charging problems

How to Solve RC Helicopter Charging Problems? [3 Solution]


Charging is one of the basics of RC, and not getting it right can be troublesome. Nobody wants that! But the good news is, solving and avoiding it is easier than it seems! 

So, what should you do if you’re facing RC helicopter charging problems?

The fault may lie with the battery, power cord, charging methods, or even the transmitter. For a faulty or incompatible battery or power cord, you’ll need to replace them. Changing the transmitter or how you charge might fix the problem too.

You’ll need to follow some standards and precision to replace the battery or cord. But that’s not something you’ve to worry about. Spare a bit of your time and give this article a read. 

Let’s jump into the details, shall we?

Solving RC Helicopter Charging Problems

You’re having some problems with your RC helicopter. But, when can you say for sure that they are related to charging? You should keep a lookout for the following-

  • Reduced flight time
  • Unstable flight
  • The battery doesn’t charge fully

These can be a result of the Lipo battery not charging, but also overcharging or a bad transmitter. You should first try rebinding your helicopter to a new transmitter. If that fixes the problem, you’re good to go! But the primary reasons are mostly the battery or power cord. To replace those, follow along-

Problem 1: Issues with Battery And Charger Connection

This might be due to discharging the battery too much. When that happens, the charger can’t connect to the battery. You’ll need to replace them. Incompatible batteries are also a problem for good performance.


The first thing you should do is to check on your batteries. If your helicopter uses the usual AA batteries, that’s a problem. These batteries are not suited for RC helicopters and can cause poor performance. You should replace those with compatible LiPo batteries.

You have to check with the manufacturer of the RC helicopter about this. Check what voltage and what type of LiPo will be compatible.

If your helicopter uses LiPo batteries, then check if they’re swollen. A swollen LiPo means continuous overcharging. You’ll have to either depuff the swollen LiPo or replace it completely.


It might be tough to replace the batteries if they’re not removable. Since you’ll have to solder on new batteries. You can do the soldering on the power board or on the battery. 

Since the powerboard is cramped, soldering on the battery is more optimal. To do this, first, cut off the Kapton tape of the old and new batteries. It’s a yellow tape placed over the solder. 

Then solder out the wires from both the batteries. Clean the wires attached to your helicopter, once soldered into the old batteries. Then solder them onto the new battery. Make sure not to let the heated soldering iron touch the battery while carrying out the process.

You can also use the wires from the new batteries and splice the wires together. But the electricity flow might not be smooth if not done perfectly.

Problem 2: Issues With Power Cord

You might be confused by unusual poor performance even with high-power batteries and motors. Usually, helicopters don’t come with high-power batteries and motors. If you want to modify your helicopter to use those, you need to change up your power cord. Or it could be a worn-out cord. 


You can easily identify a bad or worn-out power cord. They mostly tear at the base. This might result in an incomplete connection with your batteries. Which in turn, results in slow or inadequate charging. Or, if you are modifying your helicopter, you need to replace the power cord. So that it can deliver enough charge to the components and battery. 


On that note, here are some well working power cords for you to choose from-

You can either solder the new cords on the board or splice them into the existing cord wire. Although solder is usually strong, make sure to do it properly to avoid tearing.

Extra Tips

We’ve mentioned before how a swollen LiPo battery marks overcharging. But how would you prevent that? It’s simple really! You just have to balance the charges. And you can do it simply with balance chargers. 

If you fly RC helicopters as a hobby, you should definitely have one in your collection. This will ensure the multiple cells of the LiPo battery have the same charge. While also preventing overcharging. 

If that is not a viable option for you, just make sure to stop charging your battery once it’s full. Also, make sure the voltage of your LiPo battery doesn’t go below optimal level. Take note of the discharge rate of LiPo batteries. Make sure the voltage does not go below 3.3V per cell.

If your RC is still facing problems, we recommend you go to the nearest repair shop. Or maybe contact the manufacturer about the problem.


Question: How long will an RC battery last?

Answer: RC batteries usually last for 50-60 charges. If you balance the charges, you can use them for up to 100 charges. After that, it will not give full output as in the beginning.

Question: What is splicing? 

Answer: The process of merging two different wires together by cutting both in the middle. Sometimes splicing involves soldering, sometimes it doesn’t.

Question: What will happen if the soldering iron touches the LiPo battery?

Answer: LiPo batteries are extremely flammable. And they catch on fire when exposed to oxygen. That is why they are covered in a protective layer. Touching that layer with a heated solder iron can cause it to melt, exposing the battery to oxygen. 


Hopefully, this article solved all of your RC helicopter charging problems. As a parting note, remember to follow safety instructions while soldering. Let us know if our guide was able to help you find out the problem with your RC charger.

Until next time, have a great time flying your RC helicopter!

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