Always use a charger compatible with your specific battery chemistry and specifications.
Don't exceed the recommended charging current.
Unplug the charger when not in use.
Alter 36V 3A Lithium Battery Charger: Affordable and reliable option with LED indicators and multiple safety features.
E-Rex 36V 3A Lithium Battery Charger: Compact and portable, supports both Li-ion and LiFePO4 batteries.
PULSTRON PTI-3625 36V 25AH LITHIUM BATTERY CHARGER: High-efficiency option with built-in balancing and multiple safety features.