Sea & Sea YS Series Strobe Replacement Battery Cap
The Sea & Sea YS Series Battery Cap is a reliable replacement or spare battery compartment cap for the compatible Sea & Sea strobe models listed in Technical Specs. It is ideal for underwater photographers who need to replace a lost, damaged or worn battery cap, or who want to carry an additional cap as part of their essential spare-parts kit.
Designed to fit securely onto the strobe’s battery compartment, the cap helps protect the batteries and internal electrical components from water, sand, salt and debris. A properly fitted battery cap and correctly maintained O-ring are essential for preserving the strobe’s watertight integrity during underwater use.
Whether you are preparing for a local dive, travelling on an extended photography trip or maintaining professional underwater camera equipment, carrying a spare battery cap can help prevent a small missing or damaged component from ending your shoot.
Features and Benefits
- Replacement battery cap for compatible Sea & Sea YS strobes
- Replaces a lost, cracked, damaged or worn battery compartment cap
- Provides secure access to the strobe’s battery compartment
- Helps protect batteries and internal components from water and contaminants
- Durable construction suitable for use in marine environments
- Easy to install and remove when changing batteries
- Compact and convenient to carry in an underwater photography spare-parts kit
- Ideal for recreational, technical and professional underwater photographers
- Suitable as either a direct replacement or emergency spare
- O’ring included
Care and Installation
Before fitting the battery cap, inspect the cap and battery-compartment sealing surfaces for sand, hair, salt crystals or other debris. Check that the correct O-ring is clean, undamaged and lightly lubricated with the manufacturer-recommended silicone grease.
Fit and secure the cap according to the instructions for your exact strobe. Follow SEA&SEA’s O-ring maintenance guidance and check the cap, O-ring and sealing surfaces before use.
Important Information
The watertight seal depends on the condition and correct installation of the battery-compartment O-ring. Inspect the O-ring before every dive and replace it if it is stretched, cut, cracked or otherwise damaged.



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