The Castle Creations Deans Series Wire Harness (CSE011-0002-00) is a high-quality series connector designed to safely combine two battery packs into a single higher-voltage power system.
It uses Deans Ultra-style connectors and heavy-duty silicone wire to allow batteries to be wired in series, effectively doubling the total voltage output (for example, two 3S packs become a 6S setup). This makes it useful for RC cars, boats, airplanes, and helicopters that require higher voltage systems without using a single large battery pack.
The harness is built for durability and reliable current handling, but it must only be used with identical battery packs (same cell count, capacity, C-rating, and charge level) to ensure safe operation and prevent damage.
In short, it’s a simple but essential wiring solution for high-voltage RC power setups that use Deans connectors.