• Phone support for lithium starter batteries—whenever you have time
• Sale of Jigawatt lithium starter and traction batteries
• 24-hour pickup (by appointment) from a secure drop box
• Measuring the internal resistance and voltage of batteries under load
• Discharge testing of all battery types   

• Repair and after-sales service for most of our lithium starter batteries
• Get a custom-made lithium starter battery tailored just for YOU, for ANY application!
• Learn about the fundamentals, rules, and tips & tricks
• And get a unique glimpse into world-class drag racing powered by lithium batteries
• We don't have a physical store, so it's not possible to "stop by."

We call ourselves battery experts—why?

Since 2007, True Cousins has been building and racing battery-powered drag racing vehicles—and we are now the fastest electric drag racers in the world, having set the world record in 2020 and improved upon it since then.

Since we started, we’ve built everything ourselves—from the mechanical components to the electrical systems. We started with lead-acid batteries, but these were quickly replaced with lithium batteries, which have a much higher power-to-weight ratio (energy density). These were built using Li-Po cells (lithium-cobalt) in so-called battery packs—the same principle as in a Tesla, but with cells familiar from the RC world.

Lithium cells must operate within a specific voltage and temperature range, and a BMS (Battery Management System) is required for this purpose. We have designed and built these systems ourselves from the ground up (as we have done with the charging system, controllers, data logging, and many other components).

At the same time, we have built specialized starter batteries for drag bikes and cars that require very high starting currents as well as higher voltages, such as 16 V and 1,000 A. These are used in some of the very fastest dragsters.

Of course, all Jigawatt starter batteries also contain a BMS, which is one of the components we check for proper function when testing the batteries. We also test the batteries for internal resistance, capacity, various safety features, and voltage drop under load.