I realize that RC toys have one thing in common: their batteries are low capacity and not very good. You were wondering if you would upgrade your RC toy batteries to 3 times or more. Please see my instructions. You will upgrade your battery to a higher capacity with very low cost and extremely easy implementation. Good luck.

Step 1: Parts

The most important part of the accessory is the battery. I chose the 21700 battery because it has a large capacity and the size is quite similar to the 18650 battery. In this tutorial I use the 21700 battery of lishen. The Samsung 40T battery is also a great option but its price is more expensive. I didn't find my favorite batteries on Banggood or Gearbest for you. I think the following batteries on Banggood and Gearbest are suitable.

1. https://www.banggood.com/2PCS-LiitoKala-Lii-40A-21...

2. https://www.banggood.com/Eizfan-2pcs-Eizfan-Authen...

3. https://www.gearbest.com/batteries/pp_824697.html?...

Other accessories such as jacks, wires. The connector I just took is for example it may be different in your case choose the appropriate type.

1. Silicone Wire

https://www.banggood.com/1M-8101214161820222426-AW...

2. Silicone Wire Balance Extension Cable

https://www.banggood.com/Lipo-Battery-Charger-Sili...

3. 560Pcs Heat Shrink Wire

https://www.banggood.com/560Pcs-Heat-Shrink-Wire-C...

4. PVC Heat Shrink Tubing

https://www.banggood.com/1m-PVC-Heat-Shrink-Tubing...