How long do batteries last in electric wheelchair?

The lifespan of batteries in an electric wheelchair depends on several factors, including the type of battery, usage patterns, maintenance, and environmental conditions. Here's a general breakdown:

Battery Types:

1. Sealed Lead-Acid (SLA) Batteries:
   • Typically last 1–2 years or around 300–500 charge cycles.
   • Heavily affected by deep discharges and poor maintenance.
2. Lithium-Ion (Li-Ion) Batteries:
   • Last significantly longer, around 3–5 years or 500–1,000+ charge cycles.
   • Provide better performance and are lighter than SLA batteries.

Factors Influencing Battery Life:

1. Usage Frequency:
   • Heavy daily use will reduce lifespan faster than occasional use.
2. Charging Habits:
   • Fully draining the battery repeatedly can shorten its life.
   • Keeping the battery partially charged and avoiding overcharging extends longevity.
3. Terrain:
   • Frequent use on rough or hilly terrain drains the battery faster.
4. Weight Load:
   • Carrying more weight than recommended strains the battery.
5. Maintenance:
   • Proper cleaning, storage, and charging habits can extend battery life.
6. Environmental Conditions:
   • Extreme temperatures (hot or cold) can degrade battery performance and lifespan.

Signs a Battery Needs Replacement:

• Reduced range or frequent recharging.
• Slower speed or inconsistent performance.
• Difficulty holding a charge.

By taking good care of your wheelchair batteries and following the manufacturer's guidelines, you can maximize their lifespan.