Lithium Ion Batteries – E-Bike / E-Scooter

1. Lithium-ion batteries can enter “thermal runaway.”
   • If damaged, overheated, overcharged or manufactured poorly, the battery can rapidly head up, leading to fire or explosion.
2. Fires burn extremely hot and spread fast.
   • Temperatures can exceed 1,000°F (538°C), and the reaction can continue even if flames appear to be out.
3. Water may not fully extinguish the fire.
   • Water helps cool neighboring cells to prevent spread, but specialized Class B or Class D extinguishers or Lith-X extinguishers are more effective.
4. Damaged batteries are the most common cause of fires.
   • Swelling, punctures, drops, crushed batteries, or chargers that force too much current can trigger failure.
5. Many incidents start during charging.
   • Using non-approved chargers, overcharging, or charging on flammable surfaces (sofas, beds) significantly increases risk.
6. Fires often re-ignite.
   • Even after appearing extinguished, internal chemical reactions can restart the fire minutes or hours later.
7. E-bikes, scooters, and large packs pose higher risk.
   • They contain many battery cells packed closely, which can fail in a chain reaction.

Charging Habits

• Partial Charges: For daily riding, charge to 80-90% and don’t drain to 0% to preserve cell health
• Avoid Extremes: Keeping batteries at 100% or 0% for extended periods stresses them.
• Use Correct Charger: Always use the charger provided by the manufacturer.
• Charge Safely: Don’t leave it on the charger for days; use a timer if needed and charge in a designated, safe spot away from flammables/combustibles.

Storage & Temperature

• Ideal Range: Store at 50-77°F (10-25°C). 
• Long-Term Storage: Keep at 40-60% charge and check every few months.
• Avoid Heat/Cold: Don’t leave in direct sun, hot cars, or freezing conditions, as extreme temperatures cause damage. 
• Never Charge Cold: Let a frozen battery warm to room temperature before charging. 

General Maintenance

• Follow Manual: Always defer to your manufacturer’s specific instructions.
• Inspect: Regularly check battery and charger for damage. 

Physical Signs

• Swelling/Bulging: The battery case looks puffy, bulging, or deformed.
• Leaking: Liquid or residue coming from the battery pack.
• Discoloration: Changes in battery color or corrosion on terminals.

Performance Problems

• Reduced Range: Significantly shorter distances on a full charge.
• Longer Charging Times: Taking much longer to fully charge
• Rapid Discharge: Draining power very quickly.
• Inconsistent Power: Power drops or flickering during use.
• Failure to Hold Charge: Battery dies shortly after charging.

Sensory & Safety Alarms

• Extreme Heat: Battery gets excessively hot during charging or riding (some warmth is normal)
• Unusual Odor: A strong, sweet, or “rotten egg” smell.
• Strange Noises: Hissing, cracking, or popping sounds.
• Smoke: Smoke indicates an immediate fire hazard.

What to Do if You See Signs

• Stop Use: Unplug the charger and immediately stop using the device.
• Move Safely: Move the battery away from flammable materials to a safe, non-combustible area.
• Contact Manufacturer: Get professional help for inspection or replacement.