First of all you should carefully remove the batteries from your light. If your model has a battery compartment, you will most likely no longer be able to use this. We offer various spare parts for purchase on our website though, including new battery cages found via the link below:

https://ledlenser.co.uk/collections/spare-and-replacement-parts/torch-accessories

If you would like to attempt to clean it, use a penetrating or multifunction oil to clean the leaked battery fluid. You can find this oil at any hardware store.

Ledlenser’s warranty does not cover damages from battery leakage though. However, many of the brand name battery manufacturers do warrant their batteries and the devices powered by them. When storing headlamps and torches for extended periods, we recommend that the batteries are removed to prevent damage caused by leaking batteries.