36V 10.5Ah Slim Internal Battery L375mm Panasonic - Lightweight Upgrade for Folding E-Bikes - EU Stock

📏 Critical Fitment: Is this for your bike?

This is a Special Slim Size. It is much thinner than the batteries used in "Fat Tire" bikes (like Engwe/Mate).

Please measure your old battery exactly:

• Length: 375mm (approx 14.7 inches)
• Width: 40mm (approx 1.57 inches) - Very Slim!
• Height: 82mm (approx 3.2 inches)

If your battery matches these dimensions, this is the perfect premium upgrade.

🏆 Panasonic 3500mAh Technology

We use the best 18650 cells on the market: Panasonic NCR18650GA (3500mAh).

• True Capacity: 10.5Ah (378Wh) offers superior range compared to generic 7.8Ah or 10Ah packs.
• Ultralight: The entire pack weighs only approx 2.2kg, keeping your folding bike easy to carry.
• Long Lifespan: Japanese quality means this battery will last for years, not just months.

🚲 Compatibility Guide

Commonly fits 14-inch, 16-inch, and slim 20-inch folding electric bikes from brands like:

• Fiido: (Check dimensions for D4S / D3 Pro - verify connector).
• ADO: (Check specific 36V models).
• Generic Brands: Ancheer, Swifty, Whirlwind (Slim frame versions).