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1EM19 Battery Pack – Alloy Tube Hidden Down-Tube 36V/48V Li-ion
$439.00
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E-Bike / Battery Pack
EM19 Battery Pack — Alloy Tube
A purpose-built hidden down-tube battery pack for the EM19 e-bike frame. The alloy-tube design integrates fully inside the down-tube without external brackets, packing up to 40 Samsung 21700 Li-ion cells for ~720 Wh of energy. A motor-side pull-out system with screw-bolt lock lets you service or charge the pack without removing the motor, while CE and UN38.3 certification keep it compliant for safe transport. Choose 36 V 20 Ah for endurance or 48 V 15 Ah for power.
Key Features
- ▪ Fully Built-In Down-Tube Design — integrates inside the EM19 alloy frame tube with no external brackets for a clean look and balanced handling.
- ▪ Samsung 21700 Li-ion Cells — up to 40 cells (10S4P for 36 V / 13S3P for 48 V) for high energy density and long cycle life.
- ▪ Dual Voltage Options — 36 V 20 Ah (~720 Wh) for endurance or 48 V 15 Ah (~720 Wh) for peak power and climbing.
- ▪ Motor-Side Pull-Out & Screw-Bolt Lock — extract the pack without removing the motor, with strong theft prevention and secure fitment.
- ▪ CE & UN38.3 Certified — compliant with global electrical safety and battery transport regulations.
- ▪ Lightweight ~3.8 kg Build — durable yet light, maintaining bike balance without compromising capacity.
Specifications
| Compatibility | EM19 e-bike frame |
| Mounting Type | Fully built-in inside the frame down-tube (alloy tube) |
| Removal & Locking | Pull-out system from motor side (no need to remove motor) with screw-bolt lock |
| Battery Cells | Samsung 21700 Li-ion, up to 40 cells (10S4P for 36 V / 13S3P for 48 V) |
| Chemistry | Lithium-ion (Li-ion) |
| Endurance Option | 36 V 20 Ah (27.5–42 V) — ~720 Wh |
| Power Option | 48 V 15 Ah (36–54.6 V) — ~720 Wh |
| Charging Time | 36V 20Ah: 6–7 h · 48V 15Ah: 5–6 h (3A, DC 2.1 mm connector) |
| Certifications | CE, UN38.3 |
| Weight | Approx. 3.8 kg |
What's in the Box
- EM19 Alloy Tube battery pack
- Charger (3A, DC 2.1 mm connector)
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