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The Unseen Power Behind Your Miniature World
Hanery is a leading B2B manufacturer of compact, reliable, and custom-shaped polymer lithium-ion batteries for the model train and railway hobby. We engineer the discreet, long-lasting power for on-board DCC sound decoders, lighting, smoke units, and even “dead rail” operations, bringing a new level of realism and reliability to your layout.
Safety
Low Self-Discharge
Long Lifespan
Lightweight
Your Expert Model Train Battery Manufacturer in China
For a hobby where realism and smooth operation are paramount, partner with a battery manufacturer that masters compact, stable power.
Ultra-Compact & Custom Shapes
We specialize in manufacturing miniature and custom-shaped batteries to fit inside locomotive shells, rolling stock, and buildings.
Stable, Low-Speed Performance
Our batteries provide a clean, stable voltage output, essential for smooth motor control and flicker-free lighting.
"Keep-Alive" & Backup Power
Perfect for powering "keep-alive" capacitors or providing full on-board battery power to eliminate track-power issues.
Long-Lasting Capacity
High-density cells that provide hours of operation for sound, lights, and smoke effects.
Safe & Reliable
Engineered with integrated protection circuits for safe, long-term use within delicate models.
Solutions for All Scales
From tiny N-scale projects to large G-scale locomotives, we can build a battery to fit.
Custom Model Train Batteries as Your B2B Supplier
Hanery is your specialist partner for custom polymer battery packs, meticulously engineered for the detailed world of model railroading. We understand the unique challenges: fitting significant power into incredibly tight and unusually shaped spaces while ensuring flawless, stable performance. Our expertise lies in creating miniature power solutions that bring your models to life with realistic sound, consistent lighting, and the ultimate freedom of on-board battery power.
Wholesale Model Train Battery Capabilities
We provide custom power solutions for the entire model railway ecosystem.

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Hornby Model Trains & Railway Accessories Batteries
Tired of Dirty Track Causing Your Trains to Stall and Flicker?
Move beyond the track. Our on-board battery solutions deliver smooth, uninterrupted power for the ultimate in operational realism.
Customized Options for Your Model Train Batteries
We engineer every detail for a seamless and realistic model experience.
Custom Shapes & Sizes
We create long, thin, small, or L-shaped batteries to fit around motors, weights, and inside shells.
Stable Voltage Output
We select cell chemistries that offer a flat discharge curve for consistent performance of lights and sound.
Integrated Miniature PCM
We incorporate a compact Protection Circuit Module (PCM) for safety in a confined space.
Low Self-Discharge Chemistry
Our batteries hold their charge for extended periods, perfect for models that are displayed between operating sessions.
Custom Wiring & Connectors
We provide batteries with fine-gauge wires and micro-connectors (e.g., JST) for easy installation.
Multi-Cell Packs for Large Scales
We can build higher voltage packs (e.g., 7.4V, 11.1V) for the larger motors found in O-scale and G-scale locomotives.
Get Your Batteries in Bulk, Step-by-Step
In-Depth Consultation
We analyze your model's scale, available space, power requirements (motor, sound, lights), and target runtime.
Engineering & Proposal
We provide a comprehensive proposal with detailed specifications, 3D models, and a transparent wholesale quote.
Prototyping & Fit Testing
We produce functional prototypes for you to validate for fit and performance within your specific locomotive or rolling stock.
Refinement & Certification
We refine the design based on your testing and manage all required transportation certifications.
High-Volume Automated Production
Your bulk order is manufactured with a focus on consistency and quality.
Global Logistics & Compliant Shipping
We manage the entire logistics process, ensuring your batteries are shipped safely and on schedule.
FAQ for Model Train & Railway Accessories Batteries
A: “Dead Rail” is a method of operating model trains where the power comes from a battery on-board the locomotive, not from the track. This eliminates problems caused by dirty track and provides much smoother, more reliable operation.
A: A “Keep-Alive” is a device, often a capacitor or a small battery, connected to a DCC decoder. It provides a brief moment of backup power if the locomotive momentarily loses contact with the track, preventing sound and lights from resetting.
A: For a new custom design, our MOQ typically starts at 20,000 to 50,000 units, depending on the complexity and size.
A: We specialize in miniaturization. We can produce extremely small LiPo cells, but the final size is always a trade-off with capacity (runtime). Please share your available space, and we can propose the highest-capacity solution.
A: This is part of the system design. Charging can be done via a hidden jack on the locomotive, through special charging contacts that touch a powered section of track, or by removing the battery pack.
A: Yes, when used correctly. All our batteries include a Protection Circuit Module (PCM) to prevent over-charging, over-discharging, and short-circuits. Proper ventilation within the model is also important.
A: After the design is finalized, the lead time for the first batch of prototypes is generally 5-7 weeks.
A: Absolutely. We can provide a slim, high-capacity, rechargeable LiPo pack to replace traditional AA batteries, offering a lighter and more convenient solution.
A: Most HO and N scale on-board systems use a single 3.7V cell. Larger scales like O-scale and G-scale often use higher voltage packs (7.4V, 11.1V, or 14.8V) to power their larger, more demanding motors.
A: Please provide the maximum available space (length, width, height), target runtime or capacity (mAh), voltage, the maximum current draw of your motor and electronics, and your estimated annual volume.