HW 2 Pack Rechargeable 9V Batteries for Smoke Detector Alarm, Pre-Charged All-Purpose NIMH Batteries, 1000 Cycles 9 Volt for Home Battery Backup Supplies Square Batteries

【9V Rechargeable Battery】HW rechargeable 9V battery with 1800mWh capacity and low self-discharge, provide steady voltage until the whole cell is depleted, lasting longer for your devices. HW 9V rechargeable can provide 9v standard volt when full charged, better than other batteries lower than 9v.
[Fast Recharging & Safety Protection] HW rechargeable battery can be fully recharged within 1.5 hours. Each battery has polarity protection such as over-charging, over-discharging, over-voltage, over-temperature, over-current, short circuit and undervoltage.
[Save Resource,reduce pollution ] The NIMH 9v rechargeable batteryhas a long battery life due to its long-lasting durability, which can be recharged more than hundreds times can save spend.
[Easy Charging Various Devices] The 9v rechargeable battery has high compatibility, which can be widely used in different devices such as smoke detectors,microphones, remote control car toys, household products, etc.
[Environmentally Friendly Rechargeable 9v Battery] As a professional battery manufacturer, HW always adheres to the research and development of efficient and energy-saving rechargeable batteries. Compared to alkaline batteries, rechargeable batteries have reuseable, low self discharge, and constant voltage, recycleable, providing more stable power supply to devices. Recyclable charging for use, saving expenses and reducing environmental pollution.