Custom Waterproof Battery Box Injection Molding

Our custom waterproof battery box is an injection-molded plastic enclosure designed to protect batteries from water, dust, moisture and impact. Manufactured by an experienced plastic injection molding team, it is trusted by marine, power bank and industrial equipment brands worldwide.

Proven Waterproof and Sealed Design

The box features a precision-mated lid and sealing structure that resists water splash and moisture, making it suitable for trolling motors, boat-mounted power systems and outdoor installations. Optional rubber gaskets and drainage vents can be integrated into the mold to meet your IP-rated protection requirements.

High-Strength Injection-Molded Materials

We use impact-resistant engineering plastics such as ABS, PP and flame-retardant PC/ABS, selected for low-temperature toughness, chemical resistance and long outdoor service life. The material choice is matched to your operating environment, battery chemistry and drop-test requirements.

Custom Designed for Your Battery Setup

As a custom injection molding manufacturer, we tailor the box to your battery layout: cell trays for 18650 packs, mounting brackets and bosses, handles, cable glands, and venting. Custom sizes, colors, wall thickness and logo pad printing or embossing are all available.

From Mold Design to Mass Production

Our engineers review your drawings for DFM, design the injection mold, run trial samples and then move to mass production. This one-stop service covers prototyping, tooling, injection molding, assembly and packaging, supporting both small pilot runs and high-volume B2B orders.

Quality Control and Reliability

Every production lot follows incoming material inspection, in-process dimension checks and outgoing AQL sampling. Sealing fit, stacking strength and impact performance are verified so each battery case consistently protects your battery pack.

Applications

Ideal for trolling motor batteries, 18650 power banks, portable power stations, automotive systems, off-grid energy storage and industrial equipment enclosures. Send us your drawings or samples for a custom waterproof battery box quotation.