21 foot cord with AMP 10SL round military connector on one end and 2 wire Y-harness on the other with 2 polarized 5 pin round military connectors on the other. The cord enables the user to connect 2 Ultralife 2590 rechargeable batteries to the harness. The C-21-UBWH harness is used to power any 24 VDC Larson Electronics military spotlights, including the HML-5M (HLM-5M) and the HML-6M (HLM-6M) handheld spotlights with magnetic base.
The harness includes circuitry that prevents one battery from recharging the other. Effectively, the batteries are run in parallel, increasing amp hour capacity. Thus, this cable will enable the operator to run the HML-5M for 6 hours and the HML-6M for 8 hours.