4-Slot USB Button Battery Charger – LIR2032 LIR2025 LIR2016
4-Slot USB Button Battery Charger – LIR2032 LIR2025 LIR2016
Charge Up to 4 Button Batteries Simultaneously — Fast, Smart & Safe
Keep 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.
Featuring 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.
Key Features
- Universal 4-Slot Design: Charge up to 4 LIR-series button batteries at once — mix and match sizes freely.
- Wide Compatibility: Supports LIR2032, LIR2025, LIR2016, LIR1632, LIR2450, LIR2447, and more.
- Intelligent Charging: Automatic detection with constant current & constant voltage charging for safe, efficient cycles.
- Display Screen: Built-in LED/LCD indicator shows charging status at a glance — red during charging, blue when complete.
- Dual Current Selection: Choose between DC 4.2V 20mA or DC 4.2V 40mA output to suit your batteries.
- Fast Charging: Efficient conversion technology shortens charge times without compromising battery health.
- USB Powered: Convenient USB input (5V DC 1A) — power from any USB adapter, power bank, or computer port.
- Safe & CE Certified: Polymer material shell with safety and environmental protection standards. Max output power ≤37.5W.
Specifications
| Compatible Batteries | LIR2032, LIR2025, LIR2016, LIR1632, LIR2450, LIR2447 |
| Slots | 4 independent slots |
| Input Voltage | 5V DC 1A (via USB) |
| Output Voltage / Current | DC 4.2V 20mA / DC 4.2V 40mA |
| Display | LED/LCD indicator (Red = Charging, Blue = Full) |
| Max Output Power | ≤37.5W |
| Dimensions | 100mm × 49mm × 19mm |
| Shell Material | ABS Polymer Plastic |
| Certification | CE |
| Country of Origin | Made in Mainland China |
What's in the Box
- 1 × 4-Slot Button Battery Charger
- 1 × USB charging cable
- Note: Batteries are NOT included.
Important Notes
- If 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.
- Batteries 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.
- Product appearance, color, or dimensions may vary slightly as we continually improve our products; internal function and structure remain the same.
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Learn more: EPA guidance on lithium-ion battery handling
Frequently Asked Questions
Q: Which button battery sizes are compatible with this 4-slot USB charger?
A: 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.
Q: How do I know when my button batteries are fully charged?
A: 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.
Q: Can I charge different battery sizes at the same time in the 4 slots?
A: Yes! Each of the 4 slots operates independently, so you can charge different compatible LIR battery sizes simultaneously without any issue.
Q: What power source does this charger require?
A: 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.
Production & Packaging Notice
To 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.