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Replacement 36V Down-tube Battery 342x114x78mm for Entity EBR-300 E300 Ebike Reention DS-5C Tiger Shark downtube battery compatible with Entity E300 - Image 1
Replacement 36V Down-tube Battery 342x114x78mm for Entity EBR-300 E300 Ebike Reention DS-5C Tiger Shark downtube battery compatible with Entity E300 - Image 3
Replacement 36V Down-tube Battery 342x114x78mm for Entity EBR-300 E300 Ebike Reention DS-5C Tiger Shark downtube battery compatible with Entity E300 - Image 4
Replacement 36V Down-tube Battery 342x114x78mm for Entity EBR-300 E300 Ebike Reention DS-5C Tiger Shark downtube battery compatible with Entity E300 - Image 5
Replacement 36V Down-tube Battery 342x114x78mm for Entity EBR-300 E300 Ebike Reention DS-5C Tiger Shark downtube battery compatible with Entity E300 - Image 6
Replacement 36V Down-tube Battery 342x114x78mm for Entity EBR-300 E300 Ebike Reention DS-5C Tiger Shark downtube battery compatible with Entity E300 - Image 7
Replacement 36V Down-tube Battery 342x114x78mm for Entity EBR-300 E300 Ebike Reention DS-5C Tiger Shark downtube battery compatible with Entity E300 - Thumbnail Image 1
Replacement 36V Down-tube Battery 342x114x78mm for Entity EBR-300 E300 Ebike Reention DS-5C Tiger Shark downtube battery compatible with Entity E300 - Thumbnail Image 3
Replacement 36V Down-tube Battery 342x114x78mm for Entity EBR-300 E300 Ebike Reention DS-5C Tiger Shark downtube battery compatible with Entity E300 - Thumbnail Image 4
Replacement 36V Down-tube Battery 342x114x78mm for Entity EBR-300 E300 Ebike Reention DS-5C Tiger Shark downtube battery compatible with Entity E300 - Thumbnail Image 5
Replacement 36V Down-tube Battery 342x114x78mm for Entity EBR-300 E300 Ebike Reention DS-5C Tiger Shark downtube battery compatible with Entity E300 - Thumbnail Image 6
Replacement 36V Down-tube Battery 342x114x78mm for Entity EBR-300 E300 Ebike Reention DS-5C Tiger Shark downtube battery compatible with Entity E300 - Thumbnail Image 7

Replacement 36V Down-tube Battery 342x114x78mm for Entity EBR-300 E300 Ebike Reention DS-5C Tiger Shark downtube battery compatible with Entity E300

36V down-tube lithium battery is Reention DS-5C Tiger Shark downtube battery compatible with Entity E300for Entity E300 / EBR-300. 13Ah 15.6Ah 17.5Ah, 10s4p/10s5p, 20A BMS, Samsung cells, 342x114x78mm, USB output, key lock, fits 250W-500W.

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Entity EBR-300 / E300 Replacement 36V Down-tube Battery – 13Ah / 15.6Ah / 17.5Ah
This 36V down-tube lithium battery is Reention DS-5C Tiger Shark downtube battery compatible with Entity E300 is a direct replacement for the Entity E300 e-bike system (EBR-300 battery). Built to the down-tube slide mount, it delivers reliable power and long range with quality cells and a smart BMS.
Compatibility
✅ Entity E300 E-bike System
✅ Entity EBR-300 Down-tube Battery Dock
✅ Fits motors rated 250W–500W
Precise Dimensions & Specifications
ParameterValue
Battery PositionDown tube (slide mount)
Nominal Voltage36V
Nominal Capacity13 / 15.6 / 17.5Ah
Energy468Wh (13Ah)
Dimensions342 × 114 × 78mm
Configuration10s4p / 10s5p
BMS Protection20A
Charger42V 2A / 3A
PortsSafe lock & keys, 5V USB output, DC charge port, power switch, LED capacity levels
Fit Motor250W–500W
Package Includes
1 × Down-tube battery pack (capacity as ordered)
1 × 42V charger (2A/3A)
Key Features
✅ Drop-in Replacement: Built to the Entity EBR-300 down-tube slide mount for a true fit.
✅ Multi Capacity: 13Ah / 15.6Ah / 17.5Ah options to balance range and weight.
✅ Quality Cells: Stable discharge and long service life.
✅ Smart 20A BMS: Over-charge, over-discharge, over-current and short-circuit protection.
✅ On-board USB: Charge your phone via the 5V USB output.
✅ Key Lock & LED: Secure key lock plus LED capacity level display.
Specifications
Brand: OEM compatible (customizable)
Product Name: Down-tube Lithium Battery
Nominal Voltage: 36V
Capacity: 13 / 15.6 / 17.5Ah
Dimensions: 342 × 114 × 78mm
Configuration: 10s4p / 10s5p
BMS: 20A
Charger: 42V 2A / 3A
Battery Style: Down-tube
Compatible Bikes: Entity E300, Entity EBR-300
Fit Motor: 250W–500W
Important Notes
Please verify your bike’s original battery voltage is 36V and connector matches before ordering.
Capacity, weight and dimensions may vary slightly by option; allow minor measurement tolerance.
Only the battery and charger are included; other accessories are not part of the package.
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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.

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