Universal Hailong 1 & Hailong 1-2 E-Bike Battery Mounting Base Plate Bracket (4-Pin / 5-Pin Options)

Secure your down-tube lithium battery pack with this Hailong E-Bike Battery Mounting Base Plate Holder. Engineered specifically for standard Hailong 1 and Hailong 1-2 battery cases (widely used across DIY conversion kits, frame-mounted e-bikes, and custom builds), this mounting bracket provides a rigid frame rail attachment and a clean electrical connection between your battery cradle and motor controller.

⚠️ Fitment & Pin Configuration Guidelines

CRITICAL FITMENT & TERMINAL SELECTION:

Verify Your Case Profile: Designed strictly for Hailong 1 and Hailong 1-2 cases. Will not fit Polly, Reention, or Shanshan tank-style cases.

4-Pin vs. 5-Pin Terminal Block: Check the bottom discharge interface on your battery casing before ordering:

4-Pin Version: Features 4 solid brass blade/pin contacts.

5-Pin Version: Features 5 solid brass blade/pin contacts.

Frame Rail Alignment: Mounts directly to standard water bottle cage bosses on aluminum frame down-tubes using standard M5 hex bolts.

🚀 Key High-Performance Features

Direct OEM Fitment: Exact replacement base plate for Hailong 1 and Hailong 1-2 battery cases.
Heavy-Duty Brass Terminals: Available in 4-pin or 5-pin terminal blocks for low-resistance, high-current power transfer to your motor controller.
Impact-Resistant Frame Cradle: High-strength molded composite housing prevents battery chatter and absorbs trail vibration.
Integrated Controller Pocket / Wire Channel: Internal cavity allows clean routing of discharge leads directly to your motor controller.

📊 Technical Specifications Matrix

Specification Parameter	Hailong Base Plate Specifications
Brand / Series	miling Hailong Series
Case Compatibility	Hailong 1 & Hailong 1-2 Down-Tube Cases
Available Terminal Plugs	4-Pin Blade Plug \| 5-Pin Blade Plug
Mounting Orientation	Frame Down-Tube (Standard Water Bottle Boss Spacing)
Material Construction	Impact-Resistant Reinforced Polymer & Brass Contacts
Incompatible Models	Incompatible with Polly, Hailong Max, and Shanshan Cases

📋 Ideal Applications

Replacing Damaged or Broken Base Plates on Hailong 1 or Hailong 1-2 battery packs.
Setting Up a Second E-Bike Frame to share a single Hailong battery pack across two bikes.
Repairing Loose or Melted Terminal Pins from high-current draw or road vibration.

📦 Package Contents

1 x Hailong E-Bike Battery Mounting Base Plate Holder (Select 4-Pin or 5-Pin / Hailong 1 or 1-2)

Lock your Hailong battery down tight and restore clean power transfer! Select your case style and pin count above, click Add to Cart, and order today!