Energen DroneMax P40

Energen DroneMax P40

You can buy a three-battery charger for the Phantom 4 or a four-battery charger for the Phantom 3 from DJI for about $ 90, but those won’t do much good if you’re in the field without power. Enter the Energen DroneMax P40 ($ 399), which recharges up to four …
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