Twitter Bikes
EM8 Battery Pack – B Hidden Down-Tube 36V/48V Li-ion
$439.00
/
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)
We reserve the right to make changes to product information at any time without prior notice, including specifications, models, colors, and materials.