Heavy-Duty Interchangeable-Head Terminals
About this item
- Revolutionary Modular Design — first-of-its-kind battery terminal connector with interchangeable heads accommodating all sizes from M4-M10, 1/4-20 and 3/8-16 for universal battery compatibility.
- Easy to Swap Connector Heads — go from M4 to M10 in seconds with threaded stud, top post and side post options to fit the design of any battery.
- Universal Battery Blocks — accommodates M4/M5, M6, 1/4-20, M10, 3/8-16, M8 and 15/16-18 head types; supports 48V, 36V, 24V, 12V and 6V battery voltages.
- Durable Construction — crafted from heat-treated 6061-T6 aluminum alloy with precision CNC machining for cars, trucks, motorcycles plus cargo vans, RVs, buses and large commercial trucks.
- Excellent Corrosion Resistance — unique color anodization for outstanding corrosion resistance; the anodic layer is removed from post and power cable connections for optimal connectivity.
See it in use
Fitment & clearance
Independently tested, not just claimed
Anyone can print "aircraft-grade aluminium" on a listing. We had ours tested by SGS, an independent laboratory, and we publish the report numbers so you can ask for them.
| Series | SGS report | Date | Result |
|---|---|---|---|
| STING | KK-25-09211A | 13 Sep 2025 | A6061-T6 composition verified · 46.0% IACS |
| Eagle | KK-26-04498 | 05 Jun 2026 | 48.0% IACS |
| FLEX | KK-26-04499 | 05 Jun 2026 | 46.7% IACS |
Electrical conductivity tested to ASTM E1004-23; IACS is the standard scale for how well a metal conducts. The aluminium is separately tensile tested to ASTM B557-15 — 52 ksi tensile, 50 ksi yield, against 6061-T6 specification minimums of 38 and 35. Machined and tested in Taiwan. See the numbers and the reports →
Before you install
- Check your post type first (SAE, DIN, EN or JIS)
- Step-by-step installation
- Why terminals come loose — and how to stop it
Coming: Battery Terminal Fitment & Torque Guide
Post identification chart, the four measurements to take in your own engine bay, torque table, and a print-to-scale paper template you can hold against your battery before you order. Body dimensions are already published in the dimension table.
We are still measuring — every dimension in the guide is taken off the actual product rather than a drawing, and we would rather publish it late than publish a number we have not verified. There is no signup form here yet because we have nothing to send you yet. When the guide is ready this box becomes the place to get it.