EUNORAU 52V17Ah Third Battery for FLASH Ebike

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Go Further. Ride Longer. Never Stop.

The EUNORAU 52V 17Ah Third Battery is the official range-extending battery for the FLASH and FLASH LITE ST e-bike series. Designed as a top-tube mounted third battery, it slots seamlessly into your FLASH's triple-battery system — pushing your total range to an extraordinary 354km when combined with the main and second batteries.

If range anxiety is holding you back, this is the solution. One battery, unlimited possibilities.

Key Features

• Massive Range Extension — Adds up to 137km of additional range as the third battery in the FLASH triple-battery system
• Top Tube Mount — Hailong-style top tube battery design integrates cleanly with the FLASH frame
• 52V 17Ah Capacity — High-voltage, high-capacity lithium-ion cells for consistent power delivery
• Fast 4A Charging — Charges efficiently with the included 4A charger
• 500–800 Cycle Life — Built for years of regular use
• Full BMS Protection — Short-circuit, over-charge, over-discharge, over-current, and cell balancing protection

Compatibility

• EUNORAU FLASH
• EUNORAU FLASH LITE ST

This battery is designed as the third battery in the FLASH triple-battery system. Please confirm your bike's battery configuration before purchasing.

Specifications

• Model: 52V 17Ah Hailong Lithium-Ion
• Nominal Voltage: 52V
• Capacity: 17Ah
• Type: Top tube battery
• Weight: 10.5 lbs (~4.8kg)
• Colour: Black
• Standard Charge: 4A
• Cycle Life: 500–800 charges
• BMS Protection: Short-circuit, over-charge, over-discharge, over-current, cell balancing
• SKU: 52V-17AH-B05-RA4