{"product_id":"4-slot-usb-button-battery-charger-lir2032-lir2025-lir2016-coin-cell","title":"4-Slot USB Button Battery Charger – LIR2032 LIR2025 LIR2016","description":"\u003ch2\u003eCharge Up to 4 Button Batteries Simultaneously — Fast, Smart \u0026amp; Safe\u003c\/h2\u003e\n\u003cp\u003eKeep your rechargeable button batteries topped up and ready with this universal 4-slot USB button battery charger. Compatible with a wide range of LIR coin cell battery sizes — including LIR2032, LIR2025, LIR2016, LIR1632, LIR2450, and LIR2447 — this compact, intelligent charger is the go-to solution for anyone who relies on small rechargeable cells for remotes, watches, key fobs, medical devices, and more.\u003c\/p\u003e\n\n\u003cp\u003eFeaturing an integrated display screen and smart charging circuitry, the charger automatically detects each battery and applies the optimal constant current \/ constant voltage charge to maximize battery life and safety. Dual current selection (20mA or 40mA output) gives you flexibility for different battery capacities, while fast-charge technology ensures minimal downtime. CE certified for safety and environmental standards. Made in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUniversal 4-Slot Design:\u003c\/strong\u003e Charge up to 4 LIR-series button batteries at once — mix and match sizes freely.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Compatibility:\u003c\/strong\u003e Supports LIR2032, LIR2025, LIR2016, LIR1632, LIR2450, LIR2447, and more.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntelligent Charging:\u003c\/strong\u003e Automatic detection with constant current \u0026amp; constant voltage charging for safe, efficient cycles.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDisplay Screen:\u003c\/strong\u003e Built-in LED\/LCD indicator shows charging status at a glance — red during charging, blue when complete.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual Current Selection:\u003c\/strong\u003e Choose between DC 4.2V 20mA or DC 4.2V 40mA output to suit your batteries.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFast Charging:\u003c\/strong\u003e Efficient conversion technology shortens charge times without compromising battery health.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUSB Powered:\u003c\/strong\u003e Convenient USB input (5V DC 1A) — power from any USB adapter, power bank, or computer port.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSafe \u0026amp; CE Certified:\u003c\/strong\u003e Polymer material shell with safety and environmental protection standards. Max output power ≤37.5W.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eCompatible Batteries\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003eLIR2032, LIR2025, LIR2016, LIR1632, LIR2450, LIR2447\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eSlots\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e4 independent slots\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eInput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e5V DC 1A (via USB)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eOutput Voltage \/ Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003eDC 4.2V 20mA \/ DC 4.2V 40mA\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eDisplay\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003eLED\/LCD indicator (Red = Charging, Blue = Full)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eMax Output Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e≤37.5W\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e100mm × 49mm × 19mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eShell Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003eABS Polymer Plastic\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eCertification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003eCE\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003eMade in Mainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × 4-Slot Button Battery Charger\u003c\/li\u003e\n  \u003cli\u003e1 × USB charging cable\u003c\/li\u003e\n  \u003cli\u003e\u003cem\u003eNote: Batteries are NOT included.\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eImportant Notes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eIf the indicator does not switch from red to blue after a prolonged charge, the battery may be depleted beyond recovery. Always check battery condition before charging.\u003c\/li\u003e\n  \u003cli\u003eBatteries left unused for extended periods or those low on electrolyte may no longer accept a charge — this is a battery limitation, not a charger defect.\u003c\/li\u003e\n  \u003cli\u003eProduct appearance, color, or dimensions may vary slightly as we continually improve our products; internal function and structure remain the same.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eYou May Also Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10cm-wireless-led-motion-sensor-night-light-type-c-rechargeable-cabinet-wardrobe-lamp-for-staircase-backlight-kitchen-lighting\"\u003e10CM Wireless LED Motion Sensor Night Light – Type-C Rechargeable Cabinet Lamp\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-piece-storage-tray-360-degree-refrigerator-storage-rotating-tray-used-for-kitchen-spice-jars-and-sundry-storage-turntable-1\"\u003e360-Degree Rotating Storage Tray for Kitchen Spice Jars\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.epa.gov\/recycle\/used-lithium-ion-batteries\" target=\"_blank\" rel=\"noopener\"\u003eEPA guidance on lithium-ion battery handling\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Which button battery sizes are compatible with this 4-slot USB charger?\u003c\/h4\u003e\n\u003cp\u003eA: This charger is designed for LIR-series rechargeable coin cell batteries, including LIR2032, LIR2025, LIR2016, LIR1632, LIR2450, and LIR2447. It does not charge standard non-rechargeable CR-series lithium batteries.\u003c\/p\u003e\n\u003ch4\u003eQ: How do I know when my button batteries are fully charged?\u003c\/h4\u003e\n\u003cp\u003eA: The built-in LED\/LCD display shows a red indicator light while charging is in progress. Once a battery is fully charged, the indicator switches to blue, so you always know the status at a glance.\u003c\/p\u003e\n\u003ch4\u003eQ: Can I charge different battery sizes at the same time in the 4 slots?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! Each of the 4 slots operates independently, so you can charge different compatible LIR battery sizes simultaneously without any issue.\u003c\/p\u003e\n\u003ch4\u003eQ: What power source does this charger require?\u003c\/h4\u003e\n\u003cp\u003eA: The charger uses a standard USB input (5V DC 1A). You can power it from any USB wall adapter, laptop port, or power bank. A USB cable is included in the package.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Which button battery sizes are compatible with this 4-slot USB charger?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This charger is designed for LIR-series rechargeable coin cell batteries, including LIR2032, LIR2025, LIR2016, LIR1632, LIR2450, and LIR2447. It does not charge standard non-rechargeable CR-series lithium batteries.\"}}, {\"@type\": \"Question\", \"name\": \"How do I know when my button batteries are fully charged?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The built-in LED\/LCD display shows a red indicator light while charging is in progress. Once a battery is fully charged, the indicator switches to blue, so you always know the status at a glance.\"}}, {\"@type\": \"Question\", \"name\": \"Can I charge different battery sizes at the same time in the 4 slots?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! Each of the 4 slots operates independently, so you can charge different compatible LIR battery sizes simultaneously without any issue.\"}}, {\"@type\": \"Question\", \"name\": \"What power source does this charger require?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The charger uses a standard USB input (5V DC 1A). 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