I. Core Power System Maintenance: Battery & Motor(A) Battery Maintenance: The Key to Extending Range

As the "heart" of an electric bike, battery maintenance directly impacts the vehicle's range and service life. The high-performance lithium battery equipped in SHENGMILO boasts excellent stability and durability, yet it still requires proper care.

Daily Usage Tips: Avoid over-discharging as a primary principle. Charge the battery when remaining power is around 20%-30%, and try not to let the battery drain completely before recharging. Over-discharging disrupts internal chemical reactions in the battery, accelerating aging and shortening its lifespan. Charging environment is equally critical: avoid high-temperature exposure in summer, choose a cool and ventilated place; prevent charging in low temperatures during winter by moving the vehicle indoors or to a garage with suitable temperature. Do not overcharge—unplug the charger promptly after full charge. Typically, a SHENGMILO lithium battery takes 6-8 hours to fully charge, refer to the vehicle manual for specifics.

Deep Maintenance: Perform a full charge-discharge cycle every 2-3 months (use the battery to a low level before fully recharging) to activate battery activity and enhance performance. Regularly inspect battery connections to ensure interfaces are secure, free of looseness or oxidation. If black oxide appears at the interface, wipe it with a dry cloth dipped in a small amount of alcohol. For long-term non-use, charge the battery every half month to prevent damage from prolonged power depletion.

(B) Motor Maintenance: Ensuring Stable Power Output

The motor serves as the power source of the SHENGMILO electric bike, directly influencing the riding experience. After daily rides, promptly clean dust, dirt, and debris from the motor surface to prevent foreign objects from entering and affecting heat dissipation or normal operation. Use a clean soft cloth or brush for cleaning, taking care to keep water away from the motor.

Monitor unusual noises or vibrations during motor operation. If hearing harsh friction, buzzing, or other abnormal sounds, stop using the vehicle immediately and contact professional maintenance personnel. This may result from worn internal bearings, rotor-stator friction, or loose components. Regularly apply appropriate specialized lubricant to motor bearings to reduce friction, lower noise, and extend lifespan—recommended every six months, adjusted based on usage frequency and road conditions.

Avoid prolonged overloading of the motor. Refrain from consistently riding at maximum speed on steep slopes, sandy areas, or other complex terrains, as this increases motor load and accelerates wear of internal parts. Reasonably controlling speed and road conditions keeps the motor operating efficiently and stably.

II. Safety & Comfort System Maintenance: Brakes, Fork & Tires(A) Brake System Maintenance: Safeguarding Riding Safety

The brake system is crucial for riding safety and requires regular inspection and maintenance. Before each trip, test brake sensitivity: gently squeeze the brake levers to feel if the braking force is moderate and if the brakes respond promptly to stop the wheels. Check brake cables for looseness, wear, or breakage. If loose, adjust the tension by regulating the screws at the cable ends; if severely worn or broken, replace the brake cables immediately.

Closely monitor brake pad wear. Replace brake pads when their thickness is less than 2-3 mm—worn pads reduce braking performance and increase stopping distance, potentially causing danger in emergencies. When replacing brake pads, choose original SHENGMILO parts to ensure compatibility and safety. Regularly clean oil and impurities from brake discs and pads to avoid slippage and compromised braking efficiency.

(B) Fork Maintenance: Enhancing Riding Comfort

The fork of the SHENGMILO electric bike plays a vital role in shock absorption and vehicle stability. A well-maintained fork significantly improves riding comfort and maneuverability. Daily inspections should check for fork deformation, cracks, or oil leakage. Deformation or cracks affect driving stability and increase riding risks—cease use immediately for repair or replacement; oil leakage reduces shock absorption, failing to filter vibrations on bumpy roads.

For forks with shock absorption functions, regularly inspect their damping effect by pressing the fork to feel if rebound force and speed are uniform and moderate. 明显减弱的减震效果 (Significantly reduced damping) may indicate insufficient shock oil or damaged internal parts, requiring professional 检修 (inspection and repair). Keep the fork surface clean to prevent sand and dust from entering and affecting operation. Apply appropriate lubricant to the fork's telescopic parts periodically to reduce friction and ensure smooth extension.

(C) Tire Maintenance: Ensuring Stable Driving

Tires are the only components in contact with the ground, directly impacting riding stability and safety. Regularly check tire pressure to ensure it meets the standard in the vehicle manual. Excessively high pressure reduces tire-ground contact area, causing vehicle bumping and increasing the risk of tire bursts upon hitting obstacles; low pressure increases rolling resistance, accelerates power consumption, and exacerbates tire wear. Inspect tire pressure at least weekly using a tire pressure gauge and adjust accordingly.

Observe tire surface wear—replace tires when tread depth is less than 1.6 mm. Severely worn tires significantly reduce grip on wet roads, increasing slipping risks. Check for cuts, bulges, or embedded foreign objects on the tire surface. For cuts, judge replacement need based on depth and length; bulges indicate broken internal cords and require immediate replacement to prevent sudden bursts. Promptly remove embedded foreign objects to avoid further tire damage.

III. Other Component Maintenance: Frame, Chain & Lights(A) Frame Maintenance: Maintaining Vehicle Sturdiness

The frame is the skeleton of an electric bike, supporting its entire structure. Avoid frame collisions and scratches in daily use—park the vehicle away from collision-prone areas. If frame paint is scratched or peeling, repair promptly to prevent rusting. Use a touch-up pen matching the frame color, cleaning and drying the scratched area before application.

Regularly inspect welding points and screw connections on the frame for cracks or looseness. For cracked welds, immediately seek professional welding repair; tighten loose screws with appropriate tools. Especially after long bumpy rides or collisions, carefully check the frame to ensure sturdiness and safety.

(B) Chain Maintenance: Ensuring Smooth Transmission

As a key part of the transmission system, chain maintenance affects power transmission efficiency. During riding, the chain continuously rubs against gears, prone to wear and dirt accumulation. Regularly clean oil and sediment from the chain using specialized chain cleaner and brush, then apply appropriate chain lubricant to reduce friction and wear between the chain and gears. Recommend cleaning and lubricating every 100-200 kilometers.

Check chain tension for appropriateness—over-tight chains increase transmission resistance and accelerate wear; loose chains are prone to skipping or derailing. Adjust chain tension by moving the rear wheel, ideally with a sag of 15-20 mm. Replace the chain promptly if severely worn, showing link elongation or looseness, to avoid affecting normal driving.

(C) Light & Horn Maintenance: Ensuring Night Travel Safety

Lights and horns are essential for night riding safety and communication with other road users. Regularly inspect light brightness and irradiation angle to ensure proper function with bright, appropriately angled light. Dim or non-functioning lights may result from burnt bulbs or poor wiring connections—replace bulbs with the same specification or use a multimeter to detect and repair wiring faults.

Test the horn frequently to ensure loud, clear sound. Weak or inoperative horns may be due to faulty horns or wiring issues. First check horn connections for looseness; if connected properly, inspect the horn for damage. Replace with original SHENGMILO horns to guarantee sound quality and lifespan.

IV. Maintenance Cycles & Precautions

To systemize maintenance, establish a reasonable schedule:

• Daily: Simple checks before/after rides (battery level, brake performance, tire pressure)
• Weekly: Comprehensive cleaning of the vehicle surface and key components
• Monthly (1-2): Lubricate and adjust chains, brake cables, etc.
• Semi-annually to annually: Professional deep maintenance at a repair shop for core components like motors and batteries

During maintenance, use proper tools and parts—prefer original SHENGMILO accessories or reliable brand components to avoid performance and safety issues from inferior parts. Follow standardized procedures; do not attempt unfamiliar maintenance tasks—consult professional repair shops for operations.

By adhering to the above maintenance methods and regularly servicing your SHENGMILO electric bike, you can keep it in optimal condition, accompanying you on more wonderful journeys with safe, comfortable, and lasting riding experiences.