EM8 Battery Pack – B Hidden Down-Tube 36V/48V Li-ion

$849.99

E-Bike / Battery Pack

EM8 Battery Pack — Hidden Down-Tube

A fully hidden down-tube battery pack custom-designed for the EM8 e-bike frame. Built by QingNian with up to 52 CN18650 Li-ion cells, it integrates seamlessly inside the down-tube with no external brackets, preserving the bike's aesthetics and balance. A down-taken system with double lock makes charging easy while adding theft protection, and CE / UN38.3 certification keeps it compliant for safe transport. Choose 36 V 16 Ah (~576 Wh) for range or 48 V 13 Ah (~624 Wh) for power — all at a light ~3.4 kg.

Key Features

▪ Custom-Fit for EM8 Frames — designed to fit perfectly inside the EM8's down-tube without external brackets.
▪ CN18650 Li-ion Cells (up to 52) — combines high energy density with long cycle life for extended riding range.
▪ Dual Voltage Options — 36 V 16 Ah (~576 Wh) for range or 48 V 13 Ah (~624 Wh) for stronger acceleration and climbing.
▪ Fully Hidden Mounting — integrates into the frame, preserving the bike's aesthetics and balance.
▪ Down-Taken System & Double Lock — easy removal for charging or maintenance with enhanced theft protection.
▪ CE & UN38.3 Certified — meets international electrical safety and battery transport regulations.

Specifications

Brand	QingNian
Compatibility	EM8 e-bike frame
Mounting Type	Fully hidden in the frame down-tube
Removal & Locking	Down-taken system with double lock
Battery Cells	CN18650 Li-ion, up to 52 cells
Chemistry	Lithium-ion (Li-ion)
Range Option	36 V 16 Ah (27.5–42 V) — ~576 Wh
Power Option	48 V 13 Ah (36–54.6 V) — ~624 Wh
Charging Time	5–6 h (3A, DC 2.1 mm connector)
Certifications	CE, UN38.3
Weight	Approx. 3.4 kg

What's in the Box

EM8 hidden down-tube battery pack
Charger (3A, DC 2.1 mm connector)

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