TATTU RLINE   Frankly, being my first Li-Po review, I didn’t know hoe to start it. I took the Tattu R-line 4s 1300 mAh battery in my hand several times hoping for inspiration. Nothing, it was like holding a banal brick. Then, I realized that without the Li-Po technology drones could have not evolve this fast. Biggest advantage of lithium polymer (LiPo) batteries is that they have about four times the energy density of the nickel cadmium or nickel–metal hybrid batteries.
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