[Suitable for specific battery types] The gas boiler battery box is designed for 3VD batteries and is recommended for any heating appliance that uses 2D batteries, making it ideal for homeowners and maintenance technicians who need reliable power sources for their water heaters. [Essential spare parts for maintenance] This water heater battery box can be used as a spare part for maintenance and to extend the life of the water heater. Its long service life and lightweight design allow users to purchase with confidence, providing peace of mind to property managers and owners. [Reusable and durable design] This type of Christmas tree can be used repeatedly and can be easily stored when not in use, providing a long service life. Ideal for seasonal decorators and event planners who need durable and reusable holiday decorations. [Multiple Brand Compatibility] The water heater battery box is compatible with brands such as Ascot, Caloex, Cinsa, Foset, and Heatmaster. It is important for users to check compatibility before purchasing, to ensure proper fit and function for different water heater models. [Eco-Friendly & Durable Material] Made of premium eco-friendly ABS material, the water heater battery box is durable, safe, and resistant to color changes and deformation. This ensures long-term use and reliability, perfect for eco-conscious users and those looking for sustainable home maintenance solutions.