SR41 Silver Oxide Button Cell from Canada
SR41 button cells (7.9mm x 3.6mm) are silver oxide primary batteries for precision devices, volume well under 300 cm³. HTS 8506.40.1010 applies to these flat coin-style non-rechargeable cells. Used in medical timers and photo meters.
Duty Rate — Canada → United States
12.7%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Test for open-circuit voltage >1.55V to confirm fresh primary cells vs spent (8549.11 classification)
• Label with 'Primary Battery - Do Not Recharge' to prevent consumer misuse and support classification
• For EU imports, comply with Battery Directive marking requirements even for US market entry