{"product_id":"3-8v-li-ion-4000mah-battery-fits-td-tech-ep820-15-2wh","title":"3.8V, Li-ion, 4000mAh, Battery fits TD Tech EP820, 15.2Wh","description":"\u003cdiv\u003e\u003cdiv style=\"font-family: Arial, sans-serif; color:#1f1f1f; line-height:1.55; max-width:1100px; margin:0 auto;\"\u003e \u003cdiv style=\"padding:16px 0 8px 0;\"\u003e \u003ch2 style=\"font-size:28px; margin:0 0 6px; color:#b30000;\"\u003e Cameron Sino CS-HEP820TW (Item No. CS-HEP820TW) – 3.8V \/ 4000mAh \/ Li-ion – Main application: TD Tech EP820 \u003c\/h2\u003e \u003cp style=\"margin:0 0 12px 0; font-size:14px; color:#333;\"\u003e The Cameron Sino CS-HEP820TW replacement battery is a precise, drop-in solution to power your TD Tech EP820. Built to exact dimensions with a secure connector, this direct replacement battery delivers consistent 3.8V output and 4000mAh capacity for dependable operation. \u003c\/p\u003e \u003cspan style=\"display:inline-block; font-size:12px; border:1px solid #e60000; color:#e60000; padding:4px 8px; border-radius:4px; margin-right:8px;\"\u003eDirect Replacement\u003c\/span\u003e \u003cspan style=\"display:inline-block; font-size:12px; border:1px solid #cccccc; color:#333; padding:4px 8px; border-radius:4px; margin-right:8px;\"\u003eStable Output\u003c\/span\u003e \u003cspan style=\"display:inline-block; font-size:12px; border:1px solid #cccccc; color:#333; padding:4px 8px; border-radius:4px; margin-right:8px;\"\u003eQuality Tested\u003c\/span\u003e \u003cspan style=\"display:inline-block; font-size:12px; border:1px solid #cccccc; color:#333; padding:4px 8px; border-radius:4px;\"\u003eBatteryBuyer.ca\u003c\/span\u003e \u003c\/div\u003e \u003cdiv style=\"margin-top:14px; padding:0 0 8px 0; border-top:1px solid #eee;\"\u003e \u003ch3 style=\"font-size:18px; margin:0 0 8px; color:#222;\"\u003eKey Benefits\u003c\/h3\u003e \u003cdiv style=\"border:1px solid #eaeaea; border-radius:8px; padding:14px; background:#fff;\"\u003e \u003cul style=\"margin:0; padding-left:18px;\"\u003e \u003cli\u003eReliable runtime with a high-capacity 4000mAh core for extended operation between charges.\u003c\/li\u003e \u003cli\u003eStable 3.8V output ensures consistent performance for the EP820 device.\u003c\/li\u003e \u003cli\u003eCorrect Li-ion chemistry provides high energy density with low self-discharge.\u003c\/li\u003e \u003cli\u003eExact-fit drop-in replacement with matching dimensions and connector for a secure, flush installation.\u003c\/li\u003e \u003cli\u003eRobust build quality that meets Cameron Sino safety standards for safer operation.\u003c\/li\u003e \u003cli\u003eCompatible with TD Tech EP820 and the TD Tech BTY4000LI15 battery model numbers, ensuring straightforward replacement.\u003c\/li\u003e \u003c\/ul\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cdiv style=\"margin-top:14px;\"\u003e \u003ch3 style=\"font-size:18px; margin:0 0 8px; color:#222;\"\u003eTechnical Specifications\u003c\/h3\u003e \u003ctable style=\"width:100%; border-collapse: collapse; font-size:14px; background:#fff; border:1px solid #eee; border-radius:6px;\"\u003e \u003ctbody\u003e \u003ctr style=\"border-bottom:1px solid #f0f0f0;\"\u003e \u003ctd style=\"padding:10px; font-weight:bold; width:40%;\"\u003eCameron Sino Model \/ Item No.\u003c\/td\u003e \u003ctd style=\"padding:10px;\"\u003eCS-HEP820TW (Item No. CS-HEP820TW)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr style=\"border-bottom:1px solid #f0f0f0;\"\u003e \u003ctd style=\"padding:10px; font-weight:bold;\"\u003eVoltage\u003c\/td\u003e \u003ctd style=\"padding:10px;\"\u003e3.8V\u003c\/td\u003e \u003c\/tr\u003e \u003ctr style=\"border-bottom:1px solid #f0f0f0;\"\u003e \u003ctd style=\"padding:10px; font-weight:bold;\"\u003eCapacity\u003c\/td\u003e \u003ctd style=\"padding:10px;\"\u003e4000mAh \/ 15.2Wh\u003c\/td\u003e \u003c\/tr\u003e \u003ctr style=\"border-bottom:1px solid #f0f0f0;\"\u003e \u003ctd style=\"padding:10px; font-weight:bold;\"\u003eEnergy \/ Wh\u003c\/td\u003e \u003ctd style=\"padding:10px;\"\u003e15.2Wh\u003c\/td\u003e \u003c\/tr\u003e \u003ctr style=\"border-bottom:1px solid #f0f0f0;\"\u003e \u003ctd style=\"padding:10px; font-weight:bold;\"\u003eChemistry\u003c\/td\u003e \u003ctd style=\"padding:10px;\"\u003eLi-ion\u003c\/td\u003e \u003c\/tr\u003e \u003ctr style=\"border-bottom:1px solid #f0f0f0;\"\u003e \u003ctd style=\"padding:10px; font-weight:bold;\"\u003eColour\u003c\/td\u003e \u003ctd style=\"padding:10px;\"\u003eBlack\u003c\/td\u003e \u003c\/tr\u003e \u003ctr style=\"border-bottom:1px solid #f0f0f0;\"\u003e \u003ctd style=\"padding:10px; font-weight:bold;\"\u003eDimensions\u003c\/td\u003e \u003ctd style=\"padding:10px;\"\u003e67.60 x 52.70 x 12.50 mm\u003c\/td\u003e \u003c\/tr\u003e \u003ctr style=\"border-bottom:1px solid #f0f0f0;\"\u003e \u003ctd style=\"padding:10px; font-weight:bold;\"\u003eNet Weight\u003c\/td\u003e \u003ctd style=\"padding:10px;\"\u003e74 g\u003c\/td\u003e \u003c\/tr\u003e \u003ctr style=\"border-bottom:1px solid #f0f0f0;\"\u003e \u003ctd style=\"padding:10px; font-weight:bold;\"\u003eGross Weight\u003c\/td\u003e \u003ctd style=\"padding:10px;\"\u003e99 g\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd style=\"padding:10px; font-weight:bold;\"\u003eEAN Code\u003c\/td\u003e \u003ctd style=\"padding:10px;\"\u003e4894128214298\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003c\/div\u003e \u003cdiv style=\"margin-top:14px;\"\u003e \u003ch3 style=\"font-size:18px; margin:0 0 8px; color:#222;\"\u003eCompatible With\u003c\/h3\u003e \u003cdiv style=\"max-height:220px; overflow-y:auto; border:1px solid #ddd; padding:14px; border-radius:8px; background:#fafafa;\"\u003e \u003cul style=\"margin:0; padding-left:18px;\"\u003e \u003cli\u003e\n\u003cstrong\u003eFits Brands:\u003c\/strong\u003e TD Tech\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFits Models:\u003c\/strong\u003e TD Tech EP820\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFits Battery Model Numbers:\u003c\/strong\u003e TD Tech BTY4000LI15; Cameron Sino CS-HEP820TW (Item No. CS-HEP820TW)\u003c\/li\u003e \u003c\/ul\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cdiv style=\"margin-top:14px;\"\u003e \u003ch3 style=\"font-size:18px; margin:0 0 8px; color:#222;\"\u003eApplications\u003c\/h3\u003e \u003cp style=\"margin:0; font-size:14px;\"\u003e Ideal for emergency lighting, security systems, access control, UPS, medical devices, industrial equipment, and other portable electronics that rely on a reliable 3.8V Li-ion pack. \u003c\/p\u003e \u003c\/div\u003e \u003cdiv style=\"margin-top:14px;\"\u003e \u003cp style=\"font-size:13px; color:#555;\"\u003e Important Compatibility Note: This battery is designed as a direct replacement. Capacity differences may affect runtime between charges, but do not normally affect compatibility. Always confirm voltage, dimensions, connector type, and battery part number before ordering. \u003c\/p\u003e \u003c\/div\u003e \u003cdiv style=\"margin-top:18px;\"\u003e \u003ch3 style=\"font-size:18px; margin:0 0 8px; color:#222;\"\u003eFrequently Asked Questions\u003c\/h3\u003e \u003cdiv\u003e \u003cdetails\u003e \u003csummary\u003e\u003cstrong\u003eDoes this replace the listed battery model numbers?\u003c\/strong\u003e\u003c\/summary\u003e \u003cp\u003eThe Cameron Sino CS-HEP820TW is a direct drop-in replacement for the TD Tech EP820 and the TD Tech BTY4000LI15, matching the 3.8V rating and original footprint for a reliable fit.\u003c\/p\u003e \u003c\/details\u003e \u003cdetails\u003e \u003csummary\u003e\u003cstrong\u003eDoes it fit the listed device models?\u003c\/strong\u003e\u003c\/summary\u003e \u003cp\u003eYes. This battery is designed to be compatible with the TD Tech EP820, providing a direct replacement battery option that matches the device’s electrical and physical specifications.\u003c\/p\u003e \u003c\/details\u003e \u003cdetails\u003e \u003csummary\u003e\u003cstrong\u003eWhat is the Cameron Sino model number?\u003c\/strong\u003e\u003c\/summary\u003e \u003cp\u003eThe model number is CS-HEP820TW, also listed as Item No. CS-HEP820TW.\u003c\/p\u003e \u003c\/details\u003e \u003cdetails\u003e \u003csummary\u003e\u003cstrong\u003eDoes capacity affect compatibility?\u003c\/strong\u003e\u003c\/summary\u003e \u003cp\u003eCapacity differences may affect runtime between charges but do not normally affect compatibility. The critical factors for compatibility are voltage, dimensions, and connector type.\u003c\/p\u003e \u003c\/details\u003e \u003cdetails\u003e \u003csummary\u003e\u003cstrong\u003eCharging and safety guidance\u003c\/strong\u003e\u003c\/summary\u003e \u003cp\u003eCharge with a compatible charger and avoid extreme temperatures. Power off the TD Tech EP820 before installation. Disconnect the old pack, connect the Cameron Sino CS-HEP820TW, ensure all connectors are fully seated, and the pack sits flush inside the device housing.\u003c\/p\u003e \u003c\/details\u003e \u003c\/div\u003e \u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e","brand":"Cameron Sino Technology Limited","offers":[{"title":"Default Title","offer_id":52129672233242,"sku":"CS-HEP820TW","price":53.06,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0890\/1695\/9258\/files\/CS-HEP820TW-1.jpg?v=1777147833","url":"https:\/\/batterybuyer.ca\/products\/3-8v-li-ion-4000mah-battery-fits-td-tech-ep820-15-2wh","provider":"Batterybuyer.ca","version":"1.0","type":"link"}