Energizer Ultimate Lithium AA Batteries (4 Pack) - World's Longest Lasting Double A Battery - Ideal For High Drain Devices - 100% Recyclable Plastic Free Packaging - 25 Year Shelf Life

I purchased these batteries for my Blink Outdoor camera system, as they were the ones it came with initially, and I have been extremely impressed with their performance. I currently have eight Blink cameras, and I now use these batteries in all of them. I’ve tried other lithium batteries before, but none have matched the consistency, reliability, and long-lasting power of these Energizer ones. Each AA battery weighs just 33 grams, making them noticeably lighter than standard alkalines, which is helpful when using multiple cameras or other portable devices. With a capacity of 3000 mAh, they provide significantly more energy than standard alkaline AA batteries, which typically range from 2000–2500 mAh. This higher capacity means they can deliver longer runtime, particularly in high-drain devices, so I don’t have to replace them frequently. In my Blink cameras, they have lasted up to six months even with heavy use, which is exactly what I need, as I often use the live view feature. The description states that they operate effectively across a wide temperature range, from -40°C to +60°C, so they can handle both cold winters and hot summers without issue. While I haven’t personally tested them at those extremes, they have been in my Blink cameras in direct sunlight on the hottest days of the year and performed flawlessly. They haven’t experienced the cold of winter yet, but if they can handle -40°C, it won’t be a problem here in the UK. I’ve had no issues with leaks or device problems, and the batteries deliver consistent, reliable power throughout their life. Although these are more expensive upfront than regular alkalines at £9.25 for a 4 pack, they are excellent value for anyone needing dependable, long-lasting power. I normally try to wait until they are on offer, as even with their longevity, buying enough for all eight of my Blink cameras can still hurt the wallet. However, having been stung before by cheaper lithium batteries that barely lasted a month, I’d rather invest in quality and peace of mind, which is exactly what you get from Energizer. Highly recommended! Thank you for taking the time to read my review. I hope that you found it helpful and that it assists you in your decision-making. I try to be as honest and fair as possible, as those have always been the reviews that helped me the most.

I recently purchased the Energizer AA Batteries, Ultimate Lithium, 4 Pack, and I must say that I am thoroughly impressed with their performance. As someone who relies heavily on AA batteries for a variety of devices around the house, these batteries have exceeded my expectations in every way. Unmatched Longevity One of the standout features of these batteries is their incredible longevity. They truly live up to the "Ultimate Lithium" name. I've used them in high-drain devices such as digital cameras, handheld gaming consoles, and smart home devices, and they last significantly longer than any other AA batteries I've used before. This longevity not only saves me money in the long run but also ensures that my devices are always ready to go when I need them. Lightweight and Reliable Another advantage of these batteries is their lightweight design. Despite their extended life, they are lighter than traditional alkaline batteries, making them perfect for portable devices. This feature is particularly beneficial for camping trips and travel, where every ounce counts, and you don't want to be weighed down by heavy batteries. Exceptional Performance in Extreme Temperatures The Energizer Ultimate Lithium batteries also perform exceptionally well in extreme temperatures. I've used them in both hot and cold environments without any noticeable drop in performance. This makes them an ideal choice for outdoor enthusiasts who need reliable power in challenging conditions. Leak-Proof and Safe Safety is always a concern with batteries, and Energizer has addressed this with their leak-proof design. I have peace of mind knowing that these batteries won't damage my devices or create a mess. This reliability is especially important for expensive electronics that I want to keep in perfect condition. Great Value Pack The 4-pack option offers great value for money, allowing me to stock up and have spare batteries on hand whenever needed. The packaging is also easy to open and store, making it convenient for both home and travel use. Final Thoughts Overall, the Energizer AA Batteries, Ultimate Lithium, 4 Pack is a fantastic choice for anyone who needs reliable, long-lasting power. Their impressive lifespan, lightweight design, and excellent performance in outdoor and indoor conditions make them a standout product. Whether you're powering everyday household items or demanding electronic devices, these batteries are a top-tier option that won't disappoint. I highly recommend them to anyone looking for the best AA batteries on the market.

These are genuinely lithium batteries and perform well. Used in higher-drain devices with no issues so far. Expensive, but reliable.

Bought for Nest smoke alarms, they lasted well and still had plenty of charge for other appliances when the smoke alarms said they were too low.

So far, these Energizer Lithium AAs have been great. They seem to hold their charge really well, even in devices that tend to drain batteries quickly. I’ve used them in a few gadgets around the house and haven’t had to replace them yet. That said, I did run into an odd issue when I tried using them in a Yale smart door lock. For some reason, they caused Bluetooth connection problems that went away as soon as I switched to regular alkaline batteries. Not sure why that happened — could be something to do with the device rather than the batteries themselves. Outside of that one hiccup, these are solid batteries. They’re lightweight, long-lasting, and definitely worth it for most high-drain devices.

I tested these batteries in an inflatable Halloween costume at a party and wore it for over 5 hours straight. I wanted to see if they really lived up to the “world’s longest lasting” claim — and they absolutely did. What I noticed: Full inflation all night: The costume stayed fully inflated with constant movement, even while dancing and mingling Consistent power: No drop in performance; the fan never slowed down Reliable & clean: Batteries fit easily, no leaks, no fuss Longevity: Even after the party, there was still energy left for future use Minor drawback: They’re more expensive than regular AA batteries, but considering the performance and peace of mind, the cost is easily justified. Why I’d recommend them: Perfect for high-drain devices like inflatable costumes, remote toys, cameras, and flashlights Gives consistent energy for long events — no mid-party panic Durable, dependable, and worry-free After using them, I can confidently say these are worth the extra investment. If you want batteries that last all evening (or beyond) without any drop in performance, these deliver exactly as promised. I’ll definitely be keeping a few packs on hand for every holiday and high-drain gadget.

Great quality and fantastic endurance.

I use these in my battery-powered security cameras and they’ve been excellent. They consistently last over 12 months, which makes a big difference compared to standard batteries I’ve tried in the past. They’re reliable and powerful, and I’ve never had any issues with sudden drops in performance or cameras going offline unexpectedly. Once fitted, they just do their job without needing any attention. They cost a bit more than regular batteries, but for devices like security cameras where you don’t want to be constantly changing them, they’re well worth it.