How can I prevent a rechargable lithium-ion battery / batteries from becoming faulty?

• Use the supplied charger and charging cable which came with your Ledlenser product.
• Avoid extreme temperatures; keep batteries away from direct sunlight and heat sources.
• Store lithium-ion batteries in a cool and dry place.
• If not being used for an extended period of time, ensure you charge the battery regularly, we'd suggest every 3 months.