Lipo (lithium polymer battery) is used in many electronic devices. Lipo batteries are similar to lithium ion batteries. Each of them has a nominal voltage of 3.6 volts. Unlike lithium-ion batteries, lithium polymer batteries do not have a rigid metal casing, but rather a flexible material encapsulates chemicals inside.
The main reason for the use of lithium cells in RC (remote control) schemes and helicopters is that they are much lighter than comparable NiCad or NiMH batteries, which make our RC airplanes and RC helicopters fly longer and better. You can also buy lithium polymer battery packet online.
If you are blowing the first RC model with a NiCad or NiMH battery, then switching to Lipo (lithium polymer) batteries will use different number of cells. If you had six to seven round cells then 2 lipo cells would repeat the voltage of those cells correctly.
There are many options out there. There are many lipo battery manufacturers. Choosing the right RC lipo battery is difficult, especially for a newbie.
Battery manufacturers are constantly trying to unite each other. While competition can drive down prices, it can also give rise to false claims about products.
Confirm that your batteries are capable of running the amperage level you plan to use them. Running a cell at a higher C rating than the battery, can not only damage your RC Lipo battery, but it can also damage your speed control. It is better to buy a slightly better lipo battery than destroying your electronics and putting your RC airplane or RC helicopter at risk.