To charge a Schlage security door without a power bank, first verify if the lock model supports USB charging. Models like the Schlage Encode or Encode Connect feature a USB-C port. Use a compatible USB charger (5V/2A) and a USB-C cable to connect the lock to a wall outlet or laptop. If the lock lacks USB capabilities, replace the AA or 123 batteries. Open the battery compartment, remove the old batteries, insert new ones with the correct polarity ( "+" and "–" symbols), and close the compartment. For smart locks without USB, ensure the batteries are fully charged before reinserting them.

Most Schlage security doors rely on replaceable batteries due to their design and cost-effectiveness. According to Schlage’s official specifications, standard alkaline batteries (AA or 123) typically last 1–5 years depending on usage, with an average of 1,000–2,000 entry cycles. USB-enabled models, introduced in 2020, allow charging via external power sources, reducing dependency on physical battery replacements. As of 2023, USB-compatible Schlage locks account for 15–20% of total sales, reflecting growing demand for convenience. Replacing batteries remains the primary method due to compatibility with older models and lower upfront costs. Data from Schlage’s 2022 sustainability report highlights that 78% of customers prefer battery replacement over rechargeable options for cost savings and reliability. Without a power bank, USB charging or battery replacement are the only viable solutions, ensuring operational continuity for both residential and commercial applications.