EC1 /EM5 /EM6 Battery Pack – B Hidden Down-Tube 36V/48V Li-ion

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EC1 /EM5 /EM6 Battery Pack – B Hidden Down-Tube 36V/48V Li-ion

$439.00
EV battery type: Endurance (36v)

E-Bike / Battery Pack

EC1 / EM5 / EM6 Battery Pack — Hidden Down-Tube

A fully hidden down-tube battery pack designed to fit the EC1, EM5, and EM6 e-bike frames. Built by NewQingNian with up to 40 Samsung 21700 Li-ion cells for ~720 Wh, it integrates inside the down-tube with no external brackets for a clean look and balanced handling. A down-taken system with double lock allows quick removal for charging while adding theft protection, and CE / UN38.3 certification keeps it compliant for safe transport. Choose 36 V 20 Ah for endurance or 48 V 15 Ah for power.

Key Features

  • ▪ Fits EC1 / EM5 / EM6 Frames — designed to sit inside the down-tube with no external brackets.
  • ▪ 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 power and climbing.
  • ▪ Fully Hidden Mounting — maintains the bike's clean look and balanced handling.
  • ▪ Down-Taken System & Double Lock — quick removal for charging or maintenance with enhanced theft protection.
  • ▪ CE & UN38.3 Certified — certified for international electrical safety and safe battery transport.

Specifications

Brand NewQingNian
Compatibility EC1 / EM5 / EM6 e-bike frames
Mounting Type Fully hidden in the frame down-tube
Removal & Locking Down-taken system with double 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. 3.9 kg

What's in the Box

  • EC1 / EM5 / EM6 hidden down-tube battery pack
  • Charger (3A, DC 2.1 mm connector)

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EC1 /EM5 /EM6 Battery Pack...

Endurance (36V)

$439.00