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36V 10.4Ah 385Wh Seat Tube E-Bike Battery Replacement for Ansmann, Heinzmann, Avocet, Viking, Porta, Senglar & More, 18650 Li-ion, 250W-350W Motor, with Charger & Holder - Image 1
36V 10.4Ah 385Wh Seat Tube E-Bike Battery Replacement for Ansmann, Heinzmann, Avocet, Viking, Porta, Senglar & More, 18650 Li-ion, 250W-350W Motor, with Charger & Holder - Image 2
36V 10.4Ah 385Wh Seat Tube E-Bike Battery Replacement for Ansmann, Heinzmann, Avocet, Viking, Porta, Senglar & More, 18650 Li-ion, 250W-350W Motor, with Charger & Holder - Image 3
36V 10.4Ah 385Wh Seat Tube E-Bike Battery Replacement for Ansmann, Heinzmann, Avocet, Viking, Porta, Senglar & More, 18650 Li-ion, 250W-350W Motor, with Charger & Holder - Image 4
36V 10.4Ah 385Wh Seat Tube E-Bike Battery Replacement for Ansmann, Heinzmann, Avocet, Viking, Porta, Senglar & More, 18650 Li-ion, 250W-350W Motor, with Charger & Holder - Image 5
36V 10.4Ah 385Wh Seat Tube E-Bike Battery Replacement for Ansmann, Heinzmann, Avocet, Viking, Porta, Senglar & More, 18650 Li-ion, 250W-350W Motor, with Charger & Holder - Image 6
36V 10.4Ah 385Wh Seat Tube E-Bike Battery Replacement for Ansmann, Heinzmann, Avocet, Viking, Porta, Senglar & More, 18650 Li-ion, 250W-350W Motor, with Charger & Holder - Image 7
36V 10.4Ah 385Wh Seat Tube E-Bike Battery Replacement for Ansmann, Heinzmann, Avocet, Viking, Porta, Senglar & More, 18650 Li-ion, 250W-350W Motor, with Charger & Holder - Image 8
36V 10.4Ah 385Wh Seat Tube E-Bike Battery Replacement for Ansmann, Heinzmann, Avocet, Viking, Porta, Senglar & More, 18650 Li-ion, 250W-350W Motor, with Charger & Holder - Image 9
36V 10.4Ah 385Wh Seat Tube E-Bike Battery Replacement for Ansmann, Heinzmann, Avocet, Viking, Porta, Senglar & More, 18650 Li-ion, 250W-350W Motor, with Charger & Holder - Thumbnail Image 1
36V 10.4Ah 385Wh Seat Tube E-Bike Battery Replacement for Ansmann, Heinzmann, Avocet, Viking, Porta, Senglar & More, 18650 Li-ion, 250W-350W Motor, with Charger & Holder - Thumbnail Image 2
36V 10.4Ah 385Wh Seat Tube E-Bike Battery Replacement for Ansmann, Heinzmann, Avocet, Viking, Porta, Senglar & More, 18650 Li-ion, 250W-350W Motor, with Charger & Holder - Thumbnail Image 3
36V 10.4Ah 385Wh Seat Tube E-Bike Battery Replacement for Ansmann, Heinzmann, Avocet, Viking, Porta, Senglar & More, 18650 Li-ion, 250W-350W Motor, with Charger & Holder - Thumbnail Image 4
36V 10.4Ah 385Wh Seat Tube E-Bike Battery Replacement for Ansmann, Heinzmann, Avocet, Viking, Porta, Senglar & More, 18650 Li-ion, 250W-350W Motor, with Charger & Holder - Thumbnail Image 5
36V 10.4Ah 385Wh Seat Tube E-Bike Battery Replacement for Ansmann, Heinzmann, Avocet, Viking, Porta, Senglar & More, 18650 Li-ion, 250W-350W Motor, with Charger & Holder - Thumbnail Image 6
36V 10.4Ah 385Wh Seat Tube E-Bike Battery Replacement for Ansmann, Heinzmann, Avocet, Viking, Porta, Senglar & More, 18650 Li-ion, 250W-350W Motor, with Charger & Holder - Thumbnail Image 7
36V 10.4Ah 385Wh Seat Tube E-Bike Battery Replacement for Ansmann, Heinzmann, Avocet, Viking, Porta, Senglar & More, 18650 Li-ion, 250W-350W Motor, with Charger & Holder - Thumbnail Image 8
36V 10.4Ah 385Wh Seat Tube E-Bike Battery Replacement for Ansmann, Heinzmann, Avocet, Viking, Porta, Senglar & More, 18650 Li-ion, 250W-350W Motor, with Charger & Holder - Thumbnail Image 9

36V 10.4Ah 385Wh Seat Tube E-Bike Battery Replacement for Ansmann, Heinzmann, Avocet, Viking, Porta, Senglar & More, 18650 Li-ion, 250W-350W Motor, with Charger & Holder

36V 10.4Ah 385Wh seat tube e-bike battery replacement for Ansmann, Heinzmann, Avocet, Viking, Porta, Senglar & more. 18650 high-power cells, 1000+ cycles, includes charger, holder & 2 keys. Compatible with 250W-350W motor kits.

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36V 10.4Ah (385Wh) Seat Tube E-Bike Battery – Replacement Kit

This is a 36V 10.4Ah (385Wh) seat tube lithium-ion battery designed as a direct replacement for a wide range of European e-bike models, including Ansmann, Heinzmann, Avocet, Viking, Porta, Senglar, BBF, ElFei, SFM and Bergsieger. Built with high-power 18650 cells, it delivers 1000+ charge cycles and a reliable 10A continuous / 20A max / 50A protection output. The complete kit includes a battery, holder, charger and two keys — everything you need to restore or upgrade your e-bike power source in one package.

Compatibility

✅ Ansmann / Heinzmann / Avocet / Viking / Porta HK / Senglar / BBF / ElFei / SFM / Bergsieger

✅ Bergamonte Summerville / Porta Power / Senglar Nachrüstsatz / SFM Umbausatz / LeonCycle / ElFei Longtravel / Icletta ICE Adventure

✅ Compatible with 36V 250W – 350W e-bike motor kits

✅ Seat tube mounted e-bike frame (JIS-standard seat tube)

Technical Data

ParameterValue
Voltage36V
Capacity10.4Ah
Energy385Wh
WeightApprox. 2.8 kg
CellHigh Power 18650
Cycle Life1000+
Standard Current10A
Max Current20A
Protect Current50A
End Voltage28V
Charge Voltage42V
Charge Current2A

Packing List

  • 1 × Battery
  • 1 × Holder
  • 1 × Charger
  • 2 × Keys
  • 1 × User Manual

Key Features

✅ High-Capacity 385Wh Power: 36V 10.4Ah delivers dependable range for daily commuting and leisure riding on your 250W-350W e-bike.
✅ High-Power 18650 Cells: Premium 18650 cells provide stable output, 1000+ charge cycles and long service life.
✅ Complete One-Stop Kit: Includes battery, holder, charger and 2 keys — ready to install, no extra parts needed.
✅ Broad Brand Compatibility: Designed as a direct replacement for Ansmann, Heinzmann, Avocet, Viking, Porta, Senglar, BBF, ElFei, SFM, Bergsieger and more seat-tube e-bike models.
✅ Reliable Protection Circuit: 10A standard / 20A max / 50A protection current ensures safe, stable operation.
✅ Fits 250W-350W Motor Kits: Optimized for standard 36V 250W-350W mid-drive and hub-drive motor kits.
✅ Full Warranty Support: 18 months warranty on battery, 12 months on charger.

Specifications

Brand: Replacement for Ansmann / Heinzmann (Compatible)

Product Name: 36V 10.4Ah (385Wh) Seat Tube E-Bike Battery Kit

Voltage: 36V

Capacity: 10.4Ah

Energy: 385Wh

Weight: Approx. 2.8 kg

Cell: High Power 18650

Cycle Life: 1000+

Current: 10A standard / 20A max / 50A protection

End Voltage: 28V

Charge Voltage: 42V

Charge Current: 2A

Application: Seat tube e-bike (replacement / upgrade)

Compatible Motor: 36V 250W-350W

Package: Battery + Holder + Charger + 2 Keys + Manual

Warranty: Battery 18 months / Charger 12 months

Important Notes

  • Please verify your e-bike battery mounting and connector type before purchase; this is a replacement battery, not an original brand item.
  • Compatible with 36V 250W-350W motor kits; confirm your frame uses seat tube battery mounting.
  • Minor measurement tolerance of ±1-3mm may apply.
  • Professional support available for fitment verification.
An ideal, cost-effective replacement solution for e-bike owners and repair shops to restore the range and power of their seat-tube e-bike with a complete, ready-to-use kit.
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It used to take me weeks to hunt down hard‑to‑find e‑bike spare parts. Their compatibility‑check technical support saved me countless repair headaches. Reliable supplier I can always count on.

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Flexible mixed‑batch ordering is a game‑changer for my business. Low‑risk trial‑order options, fast delivery and solid OEM‑ODM service help me expand my product range with zero inventory pressure.

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We have been sourcing e‑bike components from them for over one year. Product quality is consistent, and their responsive after‑sales support makes our daily shop‑running much easier. Highly recommended.

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Frequently Asked Questions

We supply genuine OEM parts and premium compatible aftermarket replacement parts for e-bikes, including motor components, controllers, throttles, PAS sensors, wiring harnesses, connectors and Bosch form-factor batteries.

We serve mainstream drive system manufacturers: Ananda, Bafang, Aikema, Tongsheng, Shengyi, Bosch and more. We also provide repair components for complete e-bike brands including Sur‑Ron, Aventon, Trek and many others.

All items are brand-new and inspected before shipment. We do not supply second-hand or refurbished goods.

Our team verifies compatibility according to your bike model, motor info or original part photos. We confirm available OEM parts or recommend workable alternative solutions.

Yes. Flexible order sizes are supported, ranging from single spare parts to bulk purchases.

Sea freight, air freight and rail transport are optional.

Lead time varies by item and shipping mode. We confirm exact timelines before each order and share tracking updates.

We provide part identification, model matching and full order follow-up support.