QS anti-spark battery connectors
Two-pole and multi-pole battery connectors built around an anti-spark contact sequence, for drone packs, e-bike batteries, energy-storage racks and battery-swap cabinets. The current rating and the housing protection class pick the family; the termination picks the part inside it.
Twenty-three families, one contact system
The range runs from QS2 and QS5 at the small end through QS6, QS7, QS8, QS9 and QS10 to QS12 and QS13, with suffixed variants inside each family. Rated current spans 45 A to 350 A and rated voltage is DC 500 V on the high-current families, AC 125 V on the mains-style ones. Because the families share a mating concept rather than a single shell, the plug and socket of one family only mate with each other — the family name is the first thing to fix, not the cable size.
The anti-spark sequence
These are not plain butt-joint connectors: the contact geometry sequences the connection so the inrush current of a capacitor bank or a controller does not arc across the main contacts at the moment of mating. That is the reason a QS part is specified on a battery lead rather than a generic two-pole plug, and the reason the male and female halves are sold as matched parts rather than interchangeable ones.
Housings, contacts and termination
Housings are PA66 with a UL94-V0 flame rating and operate from −20 °C to +120 °C. Contacts are gold-plated copper or gold-plated brass depending on the family, and termination is soldered or crimped. Ingress protection is family-dependent and is stated per part — IP65 on the sealed versions, IP52, IP40, IP30 or IP20 where the listing publishes a lower figure. No single IP number covers the range, so the protection class has to be read off the exact part.
Parts in this family

QS10P-L high-current battery connector — 210 A, DC 500 V

QS8 high-current battery connector

QS12 high-current battery connector — 250 A, AC 125 V

QS8 panel-locking high-current battery connector

QS10 high-current battery connector, IP65

QS10P-U panel-locking high-current battery connector, 2-6AWG

QS8P-U panel-locking high-current battery connector, IP52

QS10P-S panel-locking high-current battery connector, 6-12AWG

QS8P-S panel-locking high-current battery connector, IP20

QS8P-L high-current battery connector, IP30

QS8 blue high-current battery connector, AC 125 V

QS8-S black/red gold-plated high-current battery connector, DC 500 V

QS10P-L nickel-plated high-current battery connector — 210 A, 500 V

QS13-F high-current battery connector — 300 A

QS8-S+ black high-current battery connector — 130 A, 500 V

QS8-S+ blue high-current battery connector — 130 A, 500 V

QS8T high-current battery connector — 180 A, IP52

QS9U panel-locking high-current battery connector — 160 A, 500 V

QS13 battery-swap high-current battery connector

QS8U high-current battery connector, 500 V

QS10 adapter high-current battery connector · silicone wire

QS8-8P high-current battery connector — 300 A, 500 V

QS10H high-current battery connector — 210 A

QS12H high-current battery connector — 250 A

QS8-S harness high-current battery connector — 130 A

QS8-S nickel-plated high-current battery connector, DC 500 V

QS9L-M harness high-current battery connector

QS8 high-current battery connector, 6-2

QS9L harness high-current battery connector · gold-plated brass

QS8 C14-style high-current battery connector · copper

QS8-8L high-current battery connector — 350 A, IP20

QS9-D panel-locking high-current battery connector

QS8 C14-style high-current battery connector · 2

QS9L harness high-current battery connector · 2

QS9L-M adapter high-current battery connector

QS10 adapter high-current battery connector · 2

QS9 high-current battery connector

QS9D harness high-current battery connector — 110 A

QS9L-FPR high-current battery connector — 160 A

QS9D-FPR high-current battery connector — 160 A

QS10S harness high-current battery connector

QS9U-FPR high-current battery connector

QS9S-FPR high-current battery connector

QS13 adapter high-current battery connector

QS6-S high-current battery connector — 60 A

QS8 black high-current battery connector

QS9L-M harness high-current battery connector — 160 A

QS8 adapter high-current battery connector — 45 A

QS8 adapter high-current battery connector — 110 A

QS9L-M high-current battery connector

QS9D harness high-current battery connector

QS9 adapter high-current battery connector

QS8 harness high-current battery connector — 120 A

QS8H harness high-current battery connector

QS10-8L gold-plated high-current battery connector, IP65

QS10-8T high-current battery connector, IP65

QS10-8S high-current battery connector — 300 A, IP65

QS8-8T high-current battery connector, 500 V

QS8-8S high-current battery connector — 300 A, IP20

QS10-8P high-current battery connector, IP65

QS8-8U high-current battery connector, 500 V

QS10-8U high-current battery connector, 2-6AWG

QS6-3P waterproof high-current battery connector, 8-12

QS6T high-current battery connector — 100 A, IP52

QS6H high-current battery connector — 60 A

QS8H high-current battery connector — 130 A

QS8 adapter high-current battery connector

QS9L harness high-current battery connector — 220 A

QS9D-F harness high-current battery connector — 220 A

QS7-S panel-locking high-current battery connector

QS7-U panel-locking high-current battery connector

QS7-L adapter high-current battery connector

QS2 high-current battery connector, AC 125 V

QS5 high-current battery connector, AC 125 V

QS9-L high-current battery connector, IP52

QS9-S panel-locking high-current battery connector, IP52
Other connector families
High-current plug connectors
Gold-plated contact sets for LED and power harnesses.
Open familySealed aviation connectors
SP-series sealed circular connectors, 1 to 26 contacts, in rear-nut, flange and inline versions.
Open familyWaterproof power connectors
IP67 sealed plugs and sockets for e-bike, battery and charging leads.
Open familyEV high-voltage connectors
8 mm high-voltage plugs and sockets for electric-vehicle battery and charging harnesses, rated up to 2000 V / 250 A.
Open familyEnergy-storage connectors
Single-core high-current barrel connectors for battery cabinets, PCS, wind and PV combiner boxes — 5.7 to 12 mm barrels taking 16 to 107 mm² cable.
Open familyNeed a variant that is not listed?
Cable size, mount and current rating are the three things that change an ordering code. Send them with the model number and the closest variant can be confirmed.