9V Batteries，[4-Pack] 3600mWh Rechargeable 9 Volt Battery with Charger Square Li-ion Betaria for Smoke

Key features

• [Quick Charging] Refills 4 batteries in just 2.5 hours.
• [Reusable batteries] Each battery supports over 1000 charges.
• [Wide Compatibility] Ideal for smoke detectors, medical devices, guitar pedals, and various household electronics.
• [Safe Protection] Built-in safeguards prevent overcharging, short circuits, and leakage.
• [Multi-Battery Charging] The charger can charge 9V types include Li-ion, Ni-MH, Ni-Cd.

Free shipping included. 30-day hassle-free returns.