Wisper 905se City User Manual (English)

Timothy BryantAug 1, 2025

Why does my Wisper 905se City Bicycle driving shorter distance per recharge?

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Oscar WoodAug 1, 2025
There are several reasons why your Wisper Bicycle might be driving a shorter distance per recharge: * Your tyre pressure may be too low, so check the pressures. * You may be undercharging the battery, or there could be a fault with the charger. Try recharging the battery completely or have the charger inspected. * The battery capacity may have decreased, or the battery may be damaged, consider replacing the battery. * Hill climbing, frequent stops, strong head winds, or overloading can also reduce the distance. Use power assist and try to avoid throttle only.

Weight	22kg
Charging Time	4-6 hours
Motor	250W
Battery	36V
Frame	Aluminum
Gears	Shimano 7-Speed
Wheels	26-inch alloy
Range	Up to 50 miles
Max Speed	15.5 mph

Weight

22kg

Charging Time

4-6 hours

Motor

250W

Battery

36V

Frame

Aluminum

Gears

Shimano 7-Speed

Wheels

26-inch alloy

Range

Up to 50 miles

Max Speed

15.5 mph

Summary

Part 1 Caring for your Wisper bike and pre use checks

Before First Use Checks

Essential checks to perform before riding your Wisper bike for the first time.

Pre-Ride Checks

Quick checks to perform before each use of your Wisper bike to ensure safe operation.

Battery Care and Conditioning

Guidance on proper battery charging, conditioning, and storage for optimal performance and longevity.

Battery Recharging Guide

Step-by-step instructions for safely recharging the electric bike battery.

Water Resistance and Usage

Information on the bike's resistance to water and guidelines for using it in various weather conditions.

Maintenance and Adjustments Overview

Introduction to essential maintenance tasks and adjustments for the Wisper bike.

Torque Recommendations

Specific torque values for various nuts and bolts to ensure secure and safe assembly.

Chain Tension and Brake Adjustment

Guidance on adjusting chain tension and brake levers for optimal performance and safety.

Handlebar Grip and Fork Safety

Safety warnings concerning handlebar grips and proper fork replacement specifications.

Lubrication and Maintenance Tools

Recommendations for lubricating bike components and a list of essential maintenance tools.

Technical Specifications and Performance

Detailed technical specifications and performance metrics for the Wisper 905se City bike.

Simple Troubleshooting Guide

Common problems and their solutions for the Wisper electric bike.

Part 2 Controls and Equipment

Battery On/Off and Lock

How to turn the bike's battery on and off using the key and lock mechanism.

Battery Power Indicators and Operation

Explanation of battery power lights and how to toggle the bike's power on and off.

Red Button Operation

Details the function of the red button to turn the bike's power on or off.

Green Button (Optional)

Explains the green button's function for higher speeds and its legal restrictions.

Pedelec Mode and Power Settings

Explanation of pedelec mode operation and how to use High/Low power settings.

Throttle Operation

Information on throttle use, legality, and its independent or pedelec-assisted operation.

Brake System and Adjustment

Details on brake type, motor cut-off feature, and how to adjust and maintain brakes.

Handlebar Stem Clamp Adjustment

Instructions for adjusting the handlebar stem clamp for comfortable riding position.

Front Connection Box

Explains the function of the front connection box for easy electronic component access.

Saddle Height Adjustment

Guidance on adjusting saddle height using the quick release mechanism.

Saddle Post Suspension

Information on the saddle post suspension system and how to adjust its tension.

Rims and Spokes Maintenance

Importance of spoke checks and maintenance for wheel integrity.

Chain and Drive Wheel Care

Guidelines for caring for the chain and drive wheel, including lubrication.

Derailleur Maintenance Tools

Lists the necessary tools for performing derailleur maintenance and adjustments.

Derailleur Adjustments and Operation

Rear Derailleur Overview

Visual overview and identification of key components of the rear derailleur.

How Derailleurs Work

Explains the basic function of derailleurs in shifting the chain between sprockets.

Derailleur Adjustment Screws

Identifies the B-Screw, H-Screw, and L-Screw for derailleur adjustments.

B-Tension Adjustment

Guide on adjusting the B-tension screw for proper derailleur body angle relative to sprockets.

Advanced Derailleur Adjustments

High Gear Limit Stop Adjustment

Instructions for adjusting the H-screw to prevent over-shifting past the highest gear.

Low Gear Limit Stop Adjustment

Instructions for adjusting the L-screw to prevent over-shifting into the spokes.

Cable Tension Adjustment

How to adjust cable tension for proper derailleur movement and chain alignment.

Adjusting Derailleur by Sound

Using sound cues to diagnose and adjust derailleur cable tension for smooth shifting.

Derailleur Lubrication

Applying lubrication to derailleur parts to prevent wear and ensure smooth shifting.

Warranty Information

Warranty Validation and Registration

Requirement to register the bike online within 14 days to validate the warranty.

Warranty Exceptions

Lists common exceptions that void the limited warranty, such as misuse or damage.

Optimizing Electric Bike Range

Throttle vs. Pedal Assist for Range

Comparing throttle and pedal assist usage for maximizing battery range.

Tyre Pressure and Rolling Resistance

Importance of correct tyre pressure for reducing rolling resistance and improving range.

Air Resistance and Clothing

How air resistance, influenced by clothing and accessories, affects bike range.

Weight and Range Impact

Explains how carrying extra weight or using panniers affects the bike's range.

Battery Temperature and Range

How battery temperature influences achievable range and advice for optimal performance.

Wisper 905se City User Manual

Table of Contents

Questions and Answers:

Wisper 905se City Specifications