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Lead-acid batteries in electric wheelchairs typically need to be fully charged to 100%. However, lithium batteries do not need to be fully charged to 100% every time, as maintaining a fully charged state for a long time will cause slight wear and tear on the cells, shortening their lifespan.

For patients with severe muscle weakness or upper limb dysfunction, using traditional manual wheelchairs will lead to the dilemma of "being able to sit but unable to move" due to the lack of propulsion. Electric wheelchairs can easily replace manpower to complete various directions of travel through the electric drive system.

The core power system of electric wheel chairs is the battery they are equipped with. Most modern electric wheel chairs use lithium-ion batteries. This type of battery has the advantages of high energy density and small size, but it also has the following safety hazards: • Thermal runaway • Electrolyte leakage • Aviation regulations restrictions

Lightweight electric wheel chairs are usually lightweight and suitable for carrying when going out or putting in the trunk of a car. Its battery capacity is usually small, so it is suitable for short-distance use and is suitable for elderly people living in urban environments, especially those who need to go out frequently.

The motor power of the power wheels chair directly determines its power output. At present, most of the power wheels chairs used by the elderly on the market are equipped with motors between 200 watts and 400 watts. The design maximum speed of such motors is usually between 6 km/h and 8 km/h.

If the electric wheel chair cannot be charged after not being used for a long time, it is very likely that the battery has entered a deep discharge state and can no longer be awakened.

Power wheels chairs can serve users who have completely lost the ability to walk, including lower limb paralysis, stroke sequelae, amputees, etc. The mobility scooter requires users to have good sitting stability, upper limb operation force and a certain balance ability, which is not suitable for people with severe disabilities.

Pros of electric wheel chairs: 1. Improve freedom of movement 2. Simple operation and low learning threshold 3. More labor-saving for long-term use 4. Diverse functional configuration 5. Improve mental health and social participation 6. More suitable for elderly users Cons of electric wheel chairs: 1. High price, heavy economic burden 2. High maintenance cost, difficult to repair 3. Limited battery life, restricted by the use environment 4. Large size and weight, inconvenient to carry 5. High operating space requirements 6. Technical barriers may cause safety hazards 7. Not conducive to physical function training

The service life of different types of manual wheel chairs: 1. Standard manual wheel chairs (3-5 years) 2. Light manual wheel chairs (5-7 years) 3. Folding manual wheel chairs (3-4 years) 4. High-end customized manual wheel chairs (more than 8 years)

On rainy days, when electric wheel chairs are exposed to humid environments, moisture may penetrate into the battery compartment and circuit system, causing short circuits or battery damage, thus affecting the normal operation of the electric wheel chairs.