What causes Battery degradation reduces range significantly on the Niu Nqi Gts Pro?

Check BMS app for battery health percentage before buying Estimated fix cost: $300-$600

What causes Front fork seals leak over time on the Niu Nqi Gts Pro?

Look for oil residue around front fork tubes Estimated fix cost: $80-$150

Inspect pad thickness, test braking feel during test ride Estimated fix cost: $20-$50

Check error codes in NIU app, inspect for water damage Estimated fix cost: $150-$400

Known issues to inspect before buying a used Niu Nqi Gts Pro. What to check and how much repairs cost.

SERIOUS

Check BMS app for battery health percentage before buying

Fix cost: $300-$600

MODERATE

Look for oil residue around front fork tubes

Fix cost: $80-$150

MODERATE

Inspect pad thickness, test braking feel during test ride

Fix cost: $20-$50

SERIOUS

Check error codes in NIU app, inspect for water damage

Fix cost: $150-$400

☐Connect NIU app, check battery cycle count

☐Test ride for throttle response smoothness

☐Inspect frame for crash damage or welds

☐Verify charger included, check charging port condition

Decent if battery healthy, avoid neglected units