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EUNORAU ELECTRIC BIKES

EUNORAU 52V21Ah Secondary Battery for FLASH Ebike

SKU 52V-21AH-HYFX-D-RA4
$699.00
$699.00
Transparent pricing — no hidden fees
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✓ Authorized Online Dealer

✓ Free Shipping – Delivered in 4–13 Business Days (U.S.)

✓ Full Manufacturer Warranty Included

✓ Questions? Call us: +1 (844) 493-3486

Estimated shipping time

Order Handling Time: 1–3 Business Days (Monday – Friday)

Transit Time: 3–10 Business Days (Monday – Friday)

Total Estimated Delivery Time: 4–13 Business Days

See our Shipping Policy

What is your Return Policy?

Returns are accepted within 30 days of delivery for unused items in original packaging.

For non-defective returns, a 20% restocking fee applies and customers are responsible for return shipping.

If an item arrives damaged or incorrect, contact us within 7 days and we’ll arrange a replacement or refund, with return shipping covered where applicable.

Refunds are processed within 5–7 business days after inspection. See our Return & Refund Policy for full details.

Product Description

This premium lithium-ion battery pack delivers reliable power for your EUNORAU FLASH ebike. Featuring a robust 52V21Ah capacity with LG3500 cells, it provides extended range and consistent performance. The intelligent BMS system includes comprehensive protections—short-circuit, overcharge, overdischarge, and overcurrent safeguards—plus cell balancing for longevity. Weighing just 13.9 lbs, this down-tube mounted battery charges efficiently at 4A and withstands 500-800 charge cycles. Built for serious riders who demand durability and dependable energy output.

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