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36V/48V Dolphin downtube lithium battery for El-sport Bike TDE-10 and CLAMBER ebikes. 10.4Ah–17.5Ah, 13S4P/10S5P, Reention Dolphin shell, 42V/54.6V charger, supports 250–1000W. - Image 1
36V/48V Dolphin downtube lithium battery for El-sport Bike TDE-10 and CLAMBER ebikes. 10.4Ah–17.5Ah, 13S4P/10S5P, Reention Dolphin shell, 42V/54.6V charger, supports 250–1000W. - Image 3
36V/48V Dolphin downtube lithium battery for El-sport Bike TDE-10 and CLAMBER ebikes. 10.4Ah–17.5Ah, 13S4P/10S5P, Reention Dolphin shell, 42V/54.6V charger, supports 250–1000W. - Image 4
36V/48V Dolphin downtube lithium battery for El-sport Bike TDE-10 and CLAMBER ebikes. 10.4Ah–17.5Ah, 13S4P/10S5P, Reention Dolphin shell, 42V/54.6V charger, supports 250–1000W. - Image 5
36V/48V Dolphin downtube lithium battery for El-sport Bike TDE-10 and CLAMBER ebikes. 10.4Ah–17.5Ah, 13S4P/10S5P, Reention Dolphin shell, 42V/54.6V charger, supports 250–1000W. - Image 6
36V/48V Dolphin downtube lithium battery for El-sport Bike TDE-10 and CLAMBER ebikes. 10.4Ah–17.5Ah, 13S4P/10S5P, Reention Dolphin shell, 42V/54.6V charger, supports 250–1000W. - Image 7
36V/48V Dolphin downtube lithium battery for El-sport Bike TDE-10 and CLAMBER ebikes. 10.4Ah–17.5Ah, 13S4P/10S5P, Reention Dolphin shell, 42V/54.6V charger, supports 250–1000W. - Image 8
36V/48V Dolphin downtube lithium battery for El-sport Bike TDE-10 and CLAMBER ebikes. 10.4Ah–17.5Ah, 13S4P/10S5P, Reention Dolphin shell, 42V/54.6V charger, supports 250–1000W. - Thumbnail Image 1
36V/48V Dolphin downtube lithium battery for El-sport Bike TDE-10 and CLAMBER ebikes. 10.4Ah–17.5Ah, 13S4P/10S5P, Reention Dolphin shell, 42V/54.6V charger, supports 250–1000W. - Thumbnail Image 3
36V/48V Dolphin downtube lithium battery for El-sport Bike TDE-10 and CLAMBER ebikes. 10.4Ah–17.5Ah, 13S4P/10S5P, Reention Dolphin shell, 42V/54.6V charger, supports 250–1000W. - Thumbnail Image 4
36V/48V Dolphin downtube lithium battery for El-sport Bike TDE-10 and CLAMBER ebikes. 10.4Ah–17.5Ah, 13S4P/10S5P, Reention Dolphin shell, 42V/54.6V charger, supports 250–1000W. - Thumbnail Image 5
36V/48V Dolphin downtube lithium battery for El-sport Bike TDE-10 and CLAMBER ebikes. 10.4Ah–17.5Ah, 13S4P/10S5P, Reention Dolphin shell, 42V/54.6V charger, supports 250–1000W. - Thumbnail Image 6
36V/48V Dolphin downtube lithium battery for El-sport Bike TDE-10 and CLAMBER ebikes. 10.4Ah–17.5Ah, 13S4P/10S5P, Reention Dolphin shell, 42V/54.6V charger, supports 250–1000W. - Thumbnail Image 7
36V/48V Dolphin downtube lithium battery for El-sport Bike TDE-10 and CLAMBER ebikes. 10.4Ah–17.5Ah, 13S4P/10S5P, Reention Dolphin shell, 42V/54.6V charger, supports 250–1000W. - Thumbnail Image 8

36V/48V Dolphin downtube lithium battery for El-sport Bike TDE-10 and CLAMBER ebikes. 10.4Ah–17.5Ah, 13S4P/10S5P, Reention Dolphin shell, 42V/54.6V charger, supports 250–1000W.

36V/48V Dolphin downtube lithium battery for El-sport Bike TDE-10 and CLAMBER ebikes. 10.4Ah–17.5Ah, 13S4P/10S5P, Reention Dolphin shell, 42V/54.6V charger, supports 250–1000W.

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Dolphin Downtube Ebike Battery 36V 48V for El-sport Bike TDE-10 & CLAMBER
This 36V/48V lithium battery uses the Reention Dolphin downtube shell and is designed for the El-sport Bike TDE-10 and CLAMBER electric bicycles. Available in 10.4Ah, 13Ah, 14Ah, 15.6Ah and 17.5Ah capacities with 13S4P/10S5P configurations, it delivers stable power and extended range for urban commuting and cargo use.
Compatibility
✅ El-sport Bike TDE-10

✅ CLAMBER Ebike（cargo / trike models with Dolphin downtube battery）

Please confirm your bike uses a Reention Dolphin (downtube) battery position and the original voltage (36V or 48V) before ordering.
Precise Dimensions
ParameterValue
Nominal Voltage36V / 48V
Nominal Capacity10.4Ah / 13Ah / 14Ah / 15.6Ah / 17.5Ah
Cell Configuration13S4P / 10S4P / 10S5P
Battery Cell18650 (2600mAh / 3200mAh / 3500mAh)
BMS20A / 25A / 30A
Shell TypeReention Dolphin (Downtube)
Charger (48V)54.6V 2A
Charger (36V)42V 2A / 3A
Compatible Motor250W – 1000W
Battery TypeLithium Ion (Li-ion)
Package Includes
1 × Dolphin Downtube E-bike Battery Pack (capacity per selected option)

1 × Integrated BMS (20A / 25A / 30A)

Key Features
✅ Reention Dolphin Shell: Standard downtube battery case shared by multiple e-bike brands, direct fit for the Dolphin mount.

✅ 36V & 48V Options: Available in both voltage ratings to match your bike system.

✅ 10.4Ah–17.5Ah Capacity Choices: Choose the capacity that fits your range needs.

✅ 13S4P/10S5P Configurations: Grade 18650 cells with 2600/3200/3500mAh options for reliable discharge.

✅ 20A/25A/30A BMS: Protects against overcharge, over-discharge, over-current and short circuit.

✅ 250–1000W Motor Support: Covers the El-sport TDE-10 and CLAMBER commuter/cargo setups.

Specifications
Brand: Compatible replacement (OEM-style)

Product Name: Dolphin Downtube Lithium Battery

Nominal Voltage: 36V / 48V

Capacity: 10.4Ah / 13Ah / 14Ah / 15.6Ah / 17.5Ah

Configuration: 13S4P / 10S4P / 10S5P

Shell: Reention Dolphin (Downtube)

BMS: 20A / 25A / 30A

Charger: 54.6V 2A (48V) / 42V 2A–3A (36V)

Motor Compatibility: 250–1000W

Battery Type: Lithium Ion (Li-ion)

Important Notes
Please verify your bike uses the Reention Dolphin (downtube) battery mount and confirm the original voltage (36V or 48V) before ordering to prevent incompatibility.

Capacity and voltage options are selected at purchase; please confirm before ordering.

Only the battery pack is included; charger, frame or other accessories are not part of this listing.

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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.