Reliable Power- This high-quality replacement Lithium-Ion battery provides consistent and long-lasting power, ensuring your Cobra radios are always ready for action whenever you need them. Compatibility - This replacement battery pack is compatible with the Cobra PX Series, RX RX680 Model, and RX685 Model two way radios, ensuring a perfect fit and optimal performance for your devices. Easy Replacement - Includes one replacement battery, making it simple and hassle-free to swap out old your old battery, thereby extending the life and usability of your two-way radio. Enhanced Performance - Seamlessly compatible with your Cobra radios, this Lithium-Ion battery pack offers improved energy efficiency and reliability, ensuring your communication devices perform at their best. Fast Charging - This Li-Ion rechargeable battery supports fast charging times compared to other battery types, allowing you to power up quickly and get back to the action.