Most FPV pilots grew up on 4S or 6S LiPo: light, brutal current, four to six minutes on a 5-inch. Lithium-ion 21700 packs flip that trade. You give up some peak punch on a 1P pack and get two to three times the airtime at less weight for the same watt-hours.
The numbers that actually change the flight
| Pack | Capacity | Wh | Weight | Continuous current | Typical use |
|---|---|---|---|---|---|
| Hyperflux 4S1P 5000mAh | 5000 mAh | 72 Wh | ~300 g | 70 A | Efficient 4S / 5-inch cruise |
| Hyperflux 6S1P 5000mAh | 5000 mAh | 108 Wh | ~445 g | 70 A | 6S long-range and cinematic |
| Typical 6S 1300–1500mAh LiPo | 1300–1500 mAh | ~30 Wh | ~180–280 g | High (C-rating) | Race / freestyle punch |
| Typical 6S 5000mAh LiPo | 5000 mAh | 111 Wh | ~700–800 g | High (C-rating) | Heavy cine / long-range LiPo |
Measured flights
Minutes depend on all-up weight and cruise current. Add your own logs here as they come in.
| date | frame | motors | AUW | pack | cruise A | minutes | landing V |
|---|---|---|---|---|---|---|---|
| add your log | |||||||
| add your log |
When Li-Ion is the right pack
Long-range, cinematic, cruising 5-inch, and anything where you are not pinned at full throttle the whole flight. The 4S 5000mAh Li-Ion pack (72 Wh, ~300 g) and 6S 5000mAh Li-Ion pack (108 Wh, ~445 g) are built for that. Lithium-ion holds voltage better at cruise than a sagging LiPo, so the last minutes still feel like flying, not dumping.
When to stay on LiPo, or step to 2P
Hard freestyle and gate racing still favour LiPo if you live at 100% throttle. A 1P Li-Ion pack is current-limited to 70 A continuous; that is plenty for efficient 5-inch and long-range, not a 6S 5-inch on 8-inch props at full punch. If you want Li-Ion runtime and LiPo-class current, the 4S2P doubles capacity and current (10000 mAh, 140 A continuous). Or request a custom layout.
Weight and watt-hours
A 5000 mAh LiPo in 6S is a brick. The Hyperflux 6S1P is about 40% lighter than a typical 6S 5000 mAh LiPo for the same energy, because 21700 Li-Ion is denser. That is why flight time scales harder than the mAh number suggests: more watt-hours on the airframe, less mass to haul.
Read how much flight time Li-Ion actually gives and RS50 vs Molicel P45B.