We have 2 different types of Receiver packs Lithium Polymer(Li-Poly) and Lithium Ferrite (LiFe). The main difference between the two are the nominal voltages. A Li-Poly battery has a voltage of about 7.4V, while the LiFe pack has a voltage of 6.6V. When using a Li-Poly battery in your plane, you will need to use a voltage regulator to regulate the voltage to 5-6V for the receiver and servos. A regulator is not necessary when using LiFe batteries.
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