A lock for batteries is used to prevent unauthorized removal and damage, especially in vehicles, backup power systems, and outdoor equipment. Batteries are valuable and often targeted because they can be taken quickly without much noise. Installing a secure lock reduces this risk by adding a solid layer of protection while still allowing owners to service or replace the battery when needed. For higher security needs, pairing it with a battery anti-theft device helps discourage tampering and theft. This approach is practical for personal vehicles, fleets, and commercial setups.