Professional DIY E-bike Battery Kits & Empty Cases
Unleash the full potential of your DIY e-bike battery. Stop sourcing mismatched parts and start with a professional foundation. Our complete Pro Kits and high-quality empty cases provide the safety, durability, and waterproofing you need to build a battery pack that performs as well as it looks.
The All-in-One Pro Kit Advantage: Build Like a Professional
Building a reliable e-bike battery is about more than just the cells. It’s about safety, fitment, and durability. Hunting for individual parts online often leads to mismatched components, poor-quality materials, and a frustrating build process. Our Pro Builder’s Kit solves this problem.
We’ve bundled all the essential structural and safety components into one convenient package. Every part is guaranteed to fit perfectly with the included case, saving you time, eliminating guesswork, and ensuring your final product is robust and secure. It’s the smartest way to move from loose cells to a professional, road-ready battery pack.
What’s Inside Our Pro Builder’s Kit?
- High-Impact, Waterproof Case with mounting bracket and keys.
- Flame-Retardant Cell Holders precisely matched to the case interior.
- 99.9% Pure Nickel Strip for safe, low-resistance connections.
- Barley Paper Insulators for positive terminal safety.
Explore Our Case Styles: Hailong, Dolphin, Shark & More
Every bike frame is different. We offer a wide range of industry-standard case styles to ensure a perfect fit for your project. All styles are available as a complete Pro Kit or as a case-only option.
Hailong Battery Box
Rear Rack Battery Box
Dolphin / Shark Battery Box
Beyond the Plastic: IP65 Waterproofing, Security Locks, and BMS Space
Not all battery cases are created equal. The difference is in the details that protect your build and your investment. Our enclosures are designed with the serious builder in mind, incorporating features that are essential for a long-lasting and reliable battery pack.
Every case features a robust, key-operated locking mechanism that secures the battery to its mounting bracket, deterring theft. A carefully engineered rubber gasket system ensures an IP65 waterproof rating, protecting your cells and electronics from rain, splashes, and road debris. Inside, we’ve allocated ample space not just for the cells, but also for a full-featured Battery Management System (BMS), cable routing, and cooling airflow design. These are the professional features that separate a hobby-grade project from a true transportation-grade power source you can trust every ride.
Security Lock: Anti-theft key system with reinforced mounting base
Waterproof Rating: IP65 — resistant to rain, splashes, and dust
Material: High-impact ABS + PC composite shell
BMS Space: Dedicated compartment up to 80mm width
Cable Routing: Predefined channels for clean wiring and thermal management
Cell Capacity Charts & Dimension Guides for Builders
We speak your language. Use these charts to plan your build and select the perfect case and kit for your desired voltage and capacity. All dimensions are provided to ensure a perfect fit for your frame and your chosen BMS.
| Case Model | Compatible E-bike Brands | Max Cell Count (18650) | Max Cell Count (21700) | Common Configurations | Internal Dimensions (L×W×H mm) |
|---|---|---|---|---|---|
| Hailong-1 (Classic) | RadPower, Aventon, Juiced Bikes | 65 | 52 | 13S5P, 14S4P | 365 × 90 × 110 |
| Hailong-3 (Shark / Large) | Trek, Specialized, Giant | 91 | 70 | 13S7P, 14S6P | 390 × 110 × 130 |
| Hailong G70 (New Generation) | Velotric, Ride1Up, Aventon Level.2 | 91 | 70 | 13S7P, 14S6P | 395 × 110 × 135 |
| Dolphin (Slim) | Bosch, Yamaha, Giant Explore | 65 | 52 | 13S5P | 360 × 85 × 105 |
| Rear Rack Case | Gazelle, VanMoof, City E-bikes | 120 | 95 | 13S9P, 14S8P | 410 × 150 × 110 |
| Downtube Mini Case | Cube, Orbea, Specialized Levo | 52 | 40 | 10S5P, 13S4P | 310 × 85 × 95 |
| Trunk / Bottle Case | Universal, City, Folding E-bikes | 65 | 50 | 13S5P | 320 × 95 × 100 |
| In-Frame Integrated Case | Specialized Turbo, Cannondale, Canyon | 120 | 96 | 13S9P, 14S8P | 420 × 95 × 110 |
*All configurations are approximate and may vary slightly based on cell manufacturer, cooling design, and BMS layout.
FAQ
Yes. We provide OEM customization for case color, logo engraving, and packaging — ideal for e-bike brands or builders looking to create their own line of batteries.
All our case and kit options are designed for both 18650 and 21700 lithium cells. We provide precision-fit holders to match your selected cell format and pack configuration.
Yes, every case is available separately if you prefer to source your own cell holders or nickel strips. Simply select the “Case Only” option when ordering.
Yes. Our cases are built to meet IP65 waterproof standards and include rubber gasket seals that protect the battery pack from rain and splashes — ideal for outdoor riding conditions.
Check our Cell Capacity & Dimension Guide in the Technical Charts section. It lists internal dimensions (LxWxH) and common configurations like 13S5P or 14S4P, so you can match the case to your frame space and range needs.
Yes. Every case design includes a dedicated area for mounting a BMS to ensure safety, balance, and proper charging management.
There’s no MOQ — you can order 1 piece or 10,000 pieces.
Get in Touch with Us Now
Have a question about battery box, or need to customize it for your brand? Fill out the form below and we’ll reply within 24 hours.
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