With the colder weather coming in, I wanted to get some decent batteries to put in the remote wireless sensors of my weather station. I used to try and use the cheaper supermarket type batteries in the past, but what I've then found was that as the temperature dropped, then so did the apparent performance of the batteries until the sensors stopped operating altogether, which became particularly annoying when you had a continuous cold stretch outside.
I kind of got fed up continually having to buy batteries that didn't seem to last that long with my application, so I decided to go up market a little. So when I was in my local Tesco trying to fathom out which batteries would be good amongst the plethora of batteries on display, these ones caught my eye, because initially they were Energizer (which I thought would be a good brand) and it said 'High Tech' on the packet down the side, and had 'Ultimate' across the top. Being Energizer and Ultimate, they sounded good for the purpose I wanted them for. So I paid about £3.50 for 4 of the AA variety and took them home to try.
So why are they called 'Ultimate'? Well the packaging says that these silver and blue coloured lithium based batteries are suitable for what they call high drain devices, which to many in simple terms would mean the likes of digital stills camera, or mp3 players or portable TVs. Items that are going to use a lot of power when operated and hence would need a battery to last longer than most. The last thing you want are your batteries in your camera running out midway through a wedding or some other celebration. Hence, these 'Ultimate' batteries are advertised as fitting into that long endurance class. You don't actually get more power than the standard 1.5V that comes out of these AA size batteries. It just means that what power they give will last for longer.
So what are they like in use? Well, they are an AA size battery - nothing really special about that. But they do claim to last longer than others and are apparently better suited to the more power demanding applications as discussed. In fact they are claimed to last 7 times longer than conventional alkaline batteries. But what really caught my eye was that they claimed to keep your device running, even in cold conditions, which would be ideal for my external temperature sensors.
I suppose most people would compare batteries in various ways, like how many more shots they got on their camera through using them. In my case I suppose the comparison would be through endurance and continued power under cold temperatures. In the past with other batteries, I found that I could probably get 6 months out of them in the sensors during the spring and summer periods. But in the winter, I was lucky to get maybe 3 months. In a way, I suppose it drove a false economy because I just kept buying the cheaper batteries and using them, but over time I was using more of them.
With these Energizers, I fitted them into the sensors in January, when the outside temperature was really cold, and I thought I would probably be changing them again in about April. But they just kept on going. I've got low battery warnings on my weather station central console, which would normally tell me when things were getting low. But with these batteries, there was nothing, and so it went on, through the summer and onto the winter again and back into spring before I got a low battery warning in the Apr, some 16 months after initially installing them.
So in terms of endurance, they easily lasted longer than any of the other cheapy batteries that I used to use. It wasn't a high energy application, but at times the temperatures were very cold and would have tested the batteries in quite a harsh environment, and they have proved to be resilient to the effects of temperature whilst still maintaining a constant power output for the sensors.
This whole thing sort of taught me that sometimes it is better to go with a slightly more expensive brand. In the past, my cheapy batteries were half the price of these Energizers. But when you compare how long they lasted against these Energizers, I was probably buying 3 or 4 sets of the cheapies when I could have bought just the one pack of the Energizers and achieved the same endurance result. So in the long run, it would have paid to buy the Energizers in the first place.
In summary, highly recommended for applications where you need some endurance from your battery.
Hence, a 5* recommendation from me.
Energizer Ultimate High Tech Batteries are amongst the AAA batteries we have bought for use in digital cameras to good effect, but we have also used them in remote controls and childrens toys around the home too. They are a trusted brand, as the Energizer name is one that we are well aware of, so when we decided to opt for these we hoped they would prove to be as good as they have been marketed to be.
Being AAA batteries they are slightly smaller than the widely used AA sized variety. They can be found in many stores both on line and on the high street, many major supermarkets stock them too, so they are usually easy to source when needed. I have found that Tesco sell these for £3.50 per pack of 4 AAA batteries which seems to be amongst the cheaper prices I have found them for, as they can retail for as much as £5.50 per pack.
Now even though we all want to trust the pink fluffy Energizer Bunny when he tells us these Energizer Ultimate High Tech Batteries are amongst the best on the market, its nice to be able to see for yourself whether the Bunny is being sparing with the truth or not. With these being a lithium battery we did expect them to be better then their alkaline counterparts.
What I can say is that with these being a lithium type battery they are suitable for high drain power devices, as well as lower drain items which give them an edge over lesser products. They can be used in all manner of high drain digital items without them running down too quickly. This makes them a very good buy at just £3.50 for a pack of 4 of the batteries. Having tried them in an older style digital camera I have to say these worked rather well and didn't let us down when we needed the camera to take some snaps.
One thing we liked about these batteries is that fact that they are made from a leak resistant casing. This means that we can safely put them to use in to childrens toys, games controllers and remote controls and leave them to get on with what they do best, without fear of them leaking and ruining the item they are meant to be powering. This is a definite plus point for the product.
They also have a massive 15 year life when in storage, although we haven't put this to the test, its nice to know they should be able to last for sometime at the back of a draw somewhere, if we manage to pick up a few bargain priced packs of these in future. Another thing about these is that they are a 1/3 lighter than many similar alkaline batteries. This is great as you can pop a few spares into a small camera case and transport them in a bag without them adding too much extra weight.
Whilst we usually buy these in 4 packs, they also come as packs of either 2 or 8 batteries. As with anything prices do vary and we always try to buy when we spot a bargain or deal. At £5.50 plus, I feel these are not cheap to buy, but as they can easily be bought in Tesco for £3.50 I feel thats not too bad for a battery that does last well in power hungry digital cameras and childrens toys.
Over all we have had good results from these and so they ought to get a rating that reflects that. With everything in mind these get a 5 star product rating and are recommended at their lower retail price.
Batteries aren't the most exciting item you are ever going to purchase, however they are essential to keep your various portable electrical devices up & running. Pop into your local supermarket & you'll find an ever increasing variety of batteries on offer, from the big brands to the company's own branded ones. So how do these particular ones from Energizer compare?
These batteries are branded as "Ultimate" which basically means they will last longer particularly on power hungry technological gadgets such as digital cameras & portable music players. After using this, I can definetly confirm they do last longer. On average, I noticed around a 25% improvement in how long they lasted.
It should be noted that these batteries are more expensive than others, as well as paying for the brand name, you're also paying for this so called Ultimate functionality. A pack of 4 AAA's will set you back around £3.50. As a result I'd probably only recommend purchasing these for your power hungry items as you won't notice all that much difference using them in your everyday items.
Duracell also do a similar battery but in comparing the two I have noticed these Energizers in most cases seems to last longer & are also slightly better value for money.