--- type: restriction id: usps-small-consumer-type-lithium-ion-batteries-in-equipment-up-to-20-wh-per-cell-100- asset: shipping-restrictions-by-class title: "Small consumer-type lithium-ion batteries in equipment (up to 20 Wh per cell, 100 Wh per battery) — Postal shipping restrictions by item category" sources: - https://pe.usps.com/text/pub52/pub52c3_028.htm source_quote: "Small consumer-type lithium-ion cells and batteries (also called secondary lithium cells or batteries), such as those used to power cell phones and laptop computers, are only mailable domestically under the following conditions." generated: true harvested: 2026-08-04 stale_after: 2027-08-04 item_category: "Small consumer-type lithium-ion batteries in equipment (up to 20 Wh per cell, 100 Wh per battery)" carrier: "USPS" restriction_type: "restricted" scope: "domestic mail via air and surface transportation" conditions: "Mailable via air and surface; cells not to exceed 20 Wh, batteries not to exceed 100 Wh; up to 8 cells or 2 batteries per mailpiece; must display DOT-approved lithium battery mark" verified: false unverified_fields: carrier, conditions, item_category --- **Item category:** Small consumer-type lithium-ion batteries in equipment (up to 20 Wh per cell, 100 Wh per battery) **Carrier:** USPS **Restriction type:** restricted **Scope:** domestic mail via air and surface transportation **Conditions:** Mailable via air and surface; cells not to exceed 20 Wh, batteries not to exceed 100 Wh; up to 8 cells or 2 batteries per mailpiece; must display DOT-approved lithium battery mark > Small consumer-type lithium-ion cells and batteries (also called secondary lithium cells or batteries), such as those used to power cell phones and laptop computers, are only mailable domestically under the following conditions. Source: