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The All-Day Power to See What's Beneath the Surface
Hanery is a leading B2B manufacturer of high-capacity, durable, and all-weather polymer lithium-ion batteries for fish finders, castable sonars, and ice fishing flashers. We engineer the robust, long-lasting power that ensures a clear, uninterrupted view of the underwater world from the first cast to the last.
Safety
Low Self-Discharge
Long Lifespan
Lightweight
Your Expert Fish Finder Battery Manufacturer in China
For a device that turns a good fishing day into a great one, partner with a battery manufacturer that delivers all-day endurance.
All-Day Power for Extended Trips
Our high-capacity battery packs are engineered to power your screen and transducer for 8-12+ hours.
Rugged & Water-Resistant Design
Built with durable, sealed housings to withstand the splashes, rain, and rough handling of a fishing trip.
Superior Cold-Weather Performance
Specialized chemistry for ice fishing, delivering reliable power even in sub-zero temperatures.
Stable Power for Clear Sonar Imaging
Provides a consistent voltage platform, ensuring crisp, accurate returns on your display.
Compact & Portable Solutions
We create lightweight and compact batteries for castable sonars and portable ice fishing kits.
Certified Safety & Reliability
Rigorously tested to meet the highest international safety standards.
Custom Fish Finder & Sonar Batteries as Your B2B Supplier
Hanery is your specialist partner for custom polymer battery packs, meticulously engineered for the unique demands of the sport fishing electronics market. We understand that anglers need a power source they can absolutely rely on for a full, uninterrupted day on the water. Our expertise lies in creating durable, high-capacity, and weather-resistant power systems that can handle everything from powering bright, high-resolution screens to withstanding the cold of an ice fishing expedition.
Wholesale Fish Finder & Sonar Battery Capabilities

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Garmin Striker Fish Finders & Portable Sonar Batteries
We provide custom power solutions for all categories of portable fishing electronics.

Humminbird Fish Finders & Portable Sonar Batteries

Lowrance Fish Finders & Portable Sonar Batteries
Don't Let a Dead Battery Cut Your Fishing Trip Short.
We engineer high-capacity battery packs that deliver the all-day endurance you need to find and catch more fish.
Customized Options for Your Fish Finder & Sonar Batteries
We engineer every detail for reliability on the water.
High-Capacity Cell Selection
We use the highest energy density cells to maximize runtime for long days of fishing.
Rugged & IP-Rated Housing
We design durable, sealed enclosures to protect the battery from water ingress and achieve a high IP rating.
Wide Temperature Chemistry
We use specialized electrolytes to ensure reliable performance for ice fishing in sub-zero temperatures.
Intelligent BMS for Stable Output
We integrate a smart BMS to provide stable, clean power for sensitive sonar transducers and electronics.
Custom Form Factors
We design battery packs to fit perfectly within portable kits, kayak hulls, or castable device enclosures.
Convenient Charging Solutions
We can design the pack with integrated charging ports or compatibility with various charging systems.
Get Your Batteries in Bulk, Step-by-Step
In-Depth Consultation
We analyze your device's power draw (screen, transducer, GPS), target runtime, and environmental requirements.
System Design & DFM Proposal
We provide a comprehensive proposal with 3D models and Design for Manufacturing (DFM) feedback.
Prototyping & Field Testing
We produce robust prototypes for you to conduct extensive on-the-water and cold-weather testing.
Certification Management & Approval
We manage all global safety and transportation certifications (UL, IEC, UN38.3).
High-Volume Automated Production
Your bulk order is manufactured with a focus on durability and consistency.
Global Logistics & Compliant Shipping
We manage the entire logistics process, ensuring your batteries are shipped safely and on schedule worldwide.
FAQ for Fish Finder & Portable Sonar Batteries
A: This depends on your device’s screen size and power consumption. We will design the battery with a specific Watt-hour (Wh) capacity to meet your target runtime, whether it’s 8, 12, or even 24+ hours.
A: Yes, absolutely. We use a specialized wide-temperature chemistry that is engineered to perform reliably in sub-zero temperatures, which is essential for ice fishing electronics.
A: We can design the battery pack with a fully sealed, robust housing to achieve a high IP rating (e.g., IP67). This makes our battery a key component in your overall waterproof product design.
A: For a new custom design, our MOQ typically starts at 20,000 to 50,000 units, depending on the complexity of the housing and electronics.
A: Yes. We design our packs to handle the continuous power draw from modern, high-power screens and powerful sonar transducers, providing a stable voltage for clear, flicker-free operation.
A: After the design is finalized, the lead time for the first batch of ruggedized prototypes is generally 6-8 weeks.
A: Yes, we can design the battery pack to be user-replaceable with a durable enclosure and secure connectors, allowing customers to carry a spare for multi-day trips.
A: We can design the pack with a standard DC barrel jack for charging with an AC adapter. For smaller, castable devices, we can integrate a USB-C port for convenient charging.
A: Yes. We manage the entire certification process to ensure your battery pack meets all required standards for your target markets, including CE, UL 2054, IEC 62133, and UN38.3.
A: Please provide your device’s voltage, required runtime (hours), continuous power draw (Watts or Amps), dimensional constraints, any specific IP or temperature requirements, and your estimated annual volume.