About
Built in NZ.
Flown since 2016.
Hyperflux is a New Zealand workshop making Li-Ion FPV packs from genuine Reliance RS50 cells. Packs are assembled and discharge-tested on the bench before they ship.
The story
It started at the end of a four-minute flight.
We have been building, racing, and crashing in the New Zealand RC and FPV scene since 2016. Club days, paddocks, and the first NZ race grids taught the same lesson: packs were the bottleneck. LiPos sagged after a few dozen cycles. “High-capacity” imports weighed like bricks and flew like them. Sessions ended when the batteries did, not when the light did.
Hyperflux is the battery we actually wanted to fly. High-capacity lithium-ion packs with genuine high current delivery, designed, assembled, and bench-tested in New Zealand by people who fly what they build. Packs leave this workshop as finished FPV batteries, assembled and labelled here.
No inflated markups. No inflated specs. Every number we publish is on the official Reliance RS50 datasheet, and every pack is discharge-tested before it leaves the bench. The workshop is in Auckland, New Zealand.
NZ workshop
Assembled in the Auckland workshop.
Packs are built in our New Zealand workshop from matched 21700 cells. Tight quality control, honest weights, and a pack meant to last hundreds of cycles. Series and parallel layouts, leads, and connectors are set on the same bench as the Black Series range. 2P and one-off robotics packs go through that bench too: request the layout on the custom pack page.
Request a custom pack →RS50 cells
Genuine Reliance RS50. Direct-sourced.
Every Black Series pack and every loose cell we sell is a genuine Reliance INR21700-RS50: 5000 mAh typical (min. 4950 mAh), 3.6 V nominal, 18 Wh, 70 A continuous / 140 A burst, 2.5 V cutoff, charge to 4.20 V. Direct-sourced. The wrapper matches the datasheet. That cell is in the 4S 5000mAh Li-Ion pack (4S1P, 72 Wh, ~300 g), the 6S 5000mAh Li-Ion pack (6S1P, 108 Wh, ~445 g), and sold per cell for custom builds. The published sheet is the INR21700-RS50 datasheet (PDF).
Bench testing
Discharge-tested before it ships.
We do not ship on wrapper ratings. Each pack is discharge-tested for sustained 70 A (140 A on 2P), burst behaviour, and thermal stability on the bench. If a pack does not hold the numbers on the datasheet, it does not leave the workshop. That is the whole point of assembling in New Zealand: we can refuse a pack that a drop-shipped import would have already posted.