Pet Collar Power Tested: Long-Lasting vs. Environmental Impact When it comes to keeping your furry companion's collar functioning reliably, the choice of battery can feel like a balancing act between durability and sustainability. Let's dive into the contenders: The Rechargeable Lithium AAA batteries with charger offer a sleek, eco-conscious solution. With a 1100mWh capacity and 1600 recharge cycles, they promise long-term value, though their 1.5V output may require frequent recharging for high-drain devices. The Constant 1.5V Rechargeable Batteries (12AAA+1Charger) lean into convenience, providing a ready-to-use set for those who prefer the simplicity of plug-and-play technology. Meanwhile, the PetSafe Dog Collar Batteries (2 Pack) stand out with their waterproof lithium metal design, ensuring resilience against spills and splashes, but their single-use nature raises questions about long-term waste. On the other end of the spectrum, Duracell Coppertop AAA batteries tout Power Boost ingredients and alkaline chemistry, delivering a robust 1.5V for devices that demand consistent performance. However, their disposable design means frequent replacements-adding to landfill waste. The Powermax Double AA batteries, with a 10-year shelf life and reclosable packaging, offer a hybrid approach: ultra-long-lasting power for less frequent changes, yet their larger size may not suit all collar models. So, which wins? Rechargeables may cost more upfront but shine in reducing environmental impact, while alkaline batteries prioritize immediate reliability at the expense of sustainability. The answer depends on how often you're willing to recharge-and how much you value a collar that never misses a beat.