What maintenance difference exists for patients with non-rechargeable SNM systems?

• A. The device requires routine external charging.
• B. Surgical battery replacement is required when depleted.
• C. The device can be charged via USB.
• D. The device self-resets automatically.

Answer: (B)

Non-rechargeable SNM systems use a finite battery inside the implanted generator. There’s no external charging capability, so when the battery is depleted, the only way to continue therapy is a surgical replacement of the generator. This contrasts with rechargeable systems, which require periodic external charging to restore function. USB charging and automatic self-resets aren’t features of non-rechargeable devices.