Product Description
36V Down Tube Battery Packs
STARFISH II – High‑Capacity Lithium E‑Bike Battery
The 36V down tube battery pack (STARFISH II) is a premium lithium‑ion power solution designed for electric bicycles, e‑scooters, and light electric vehicles. Engineered for easy downtube mounting, this battery combines sleek aesthetics with robust performance. With a capacity range of 7.8Ah to 10.4Ah and a durable STARFISH II case, it delivers reliable energy for daily commuting, leisure rides, or delivery applications. Built with grade‑A cells and an intelligent BMS, it ensures long cycle life, safety, and compliance with global certifications.
📊 Technical Specifications
| Product Name | E‑bike Battery (Down Tube) |
|---|---|
| Battery Model | PG-3601ZZ-02-1 |
| Designation | 10INR19/66-4 |
| Nominal Voltage | 36V DC |
| Work Voltage Range | 29V – 42V |
| Capacity Options | 7,800 mAh – 10,400 mAh (7.8Ah–10.4Ah) |
| Applied Current | <15A (continuous) |
| Cycle Life | >500 cycles (0.2C charge/discharge) |
| Dimensions (max) | 403 × 100 × 92.9 mm |
| Protection Features | Over‑charge, over‑discharge, over‑current, short circuit |
| Application | Power of e‑bike, install on the downtube |
| Certifications | PSE, RoHS, BD, UN38.3 |
| Box Name / Case | STARFISH II |
| Manufacturer | Shenzhen Progreen Technology Co., Ltd. |
⚙️ Key Features & Benefits
- Down Tube Mounting: The STARFISH II case is specifically designed for downtube installation, providing a clean, integrated look on e‑bikes.
- Dual Capacity Options: Choose between 7.8Ah and 10.4Ah to match your range requirements – perfect for daily commutes or extended adventures.
- Long Cycle Life: Withstands over 500 charge/discharge cycles, delivering years of reliable service.
- Comprehensive Safety: Built‑in BMS protects against over‑charge, over‑discharge, over‑current, and short circuits.
- High‑Quality Cells: Utilizes grade‑A lithium‑ion cells for consistent power output and extended lifespan.
- Global Certifications: Meets PSE, RoHS, BD, and UN38.3 standards for safety and transport compliance.
🔧 Compatibility & Installation
The STARFISH II downtube battery is compatible with most e‑bike frames that feature a standard downtube mounting bracket. It comes with a discharge base that allows quick and secure attachment. For installation, simply slide the battery into the base and lock it with the included key. The battery can be easily removed for charging or security.
🖼️ Product Gallery
🚲 Applications
- Electric bicycles (e‑bikes) – downtube replacement or upgrade
- Electric scooters – compatible with 36V scooter systems
- Light electric vehicles (LEVs) – e‑tricycles, pedelecs, and cargo bikes
- DIY e‑bike conversions – perfect for custom electric bike builds
We offer OEM/ODM services for downtube battery packs – customize capacity (7.8Ah/10.4Ah), connectors, and BMS settings. Contact our engineering team for sample requests, technical documentation, and volume pricing.
Primary: 36V downtube battery · e‑bike battery pack · STARFISH II battery · 10.4Ah lithium battery · electric bicycle battery · downtube e‑bike battery · Progreen battery · 36V lithium pack
Performance: 500 cycle life · 15A continuous current · over‑charge protection · over‑discharge protection · short circuit protection · PSE certified · UN38.3 · RoHS
Applications: electric bicycle · e‑scooter · light electric vehicle · e‑bike battery replacement · 36V lithium battery · custom e‑bike battery
