UKC

Does anyone know the battery life compared to using normal AAA's? Not the 300 lifetimes, but from a single charge. Can't find it anywhere on their website. Thanks

In reply to David Coley: It all depends on the capacity of of your AAA's, what there made with and the temperature your operating it at.

Some battterys have a higher capacity (duracell m3 over duracell plus as an example), so if your device runs on a lower power than the capacity of the batterys the higher capacity will go longer. Then the chemical compound its made from comes into play and depending how its used (winter climbing/summer climbing) they may have an advantage or disadvantage in the cold/heat over the Core

There aint no such thing as 'normal' AAA's

In reply to David Coley: i thought this was the whole point of the core - you can set the battery life to what you want.

In reply to antwan: does using batteries in the cold make them last less time (i have rechargeables in my gps and headtorch)

In reply to David Coley: I have one and I think the longest you can set it to full power constant for is 4hrs 30mins . I think if you set it to constant lowest power I think its something like 127hrs! You can change it to either be constatnt or gradually diminishing (like normal batteries).

Hope this helps

In reply to boywonder: Should have also said that I think this varies depending on which torch it is used in I have a tikka xp 2

In reply to Northern Climber: Yes, but within limits. What I was trying to ask was something like, if set to max how long will it last compared to AA's? The reason being that on a multiday route/trip it is possible to change the AA's, but with the core this looks hard to do (and would mean buying two cores). However, if the core carries five times the number of amp-hours of the AA's, it would have to be a very big trip indeed to be an issue.

So, does anyone know how many amp-hours?

Thanks.

In reply to David Coley:
just read the review on this in Trail. Seems a little misleading the way it has been reviewed to me, is it me? what do you think?
£30 for the battery and lead. Trail goes on to say that its the same price as 7 regular batteries - So where are trail buying AAA batteries that cost over 4 quid each then? Trail also say that it it is the equivil1nt of 900 batteries. Well yes if you want to work it out like that but in real terms its already the equivilant of 3, so its to the power of 3, in real terms its the equivilant of 3 battery changes, after all, you don't change just one in you head torch do you. Same thing but brings it into a bit of perspective. 14% lighter? thats less than a bite of mars bar!
Sounds like i'm knocking it, i'm not, just the way it is reported in Trail. Maybe I'm a stuck in the mud but I have a system that I know works well. I carry the spare headtorch with new batteries, my partner carries 4 AA's so we both have spares for our camera and the GPS should they be needed.
Maybe this is an example of technology finding a solution for a problem that isn't actually there?

In reply to blanchie14c:
Someone must know how many amp-hours a core is?

In reply to David Coley: It says 900mAh.

In reply to psaunders:
Thanks

In reply to psaunders: Duracell's website suggests that their AAA are rated at 400mAh. So the three AAAs in my Kikkina headtourch equate to 1200mAh. If the core is 900mAh, one is carrying less charge than just using AAA.

In reply to David Coley: I might be wrong here but, if you run your batterys in series you get a higher voltage, but the amp hours stay the same, and if you run them on parallel the voltage stays the same but you get more amp hours.

So to get 1200mAh you would have to run your AAA'a in series and only have 1.5v rather than 3v

It has been a very long day so i could be very wrong about this...

In reply to antwan:

Sorry.. Rather than 4.5v

In reply to antwan:


You're not wrong.

In reply to David Coley:
Hi Dave
The core has 900 mAh at 4.5V, a decent set of rechargeable AAAs give 1000mAh (or 1Ah!) at 4.5V, so the run times are likely to be about the same.

The real advantage of the core is that it is a lithium cell and therefore lighter, not affected by the cold and if you need to replace it you can pop it out and put your normal AAA batteries in. That said it costs £30 and doesn't provide any more runtime than a £5 set of NIMH rechargeables from 7day shop. Personally I think it's a solution for a non existent problem, but then I don't care about being able to plug it into a PC to set the power levels.

Wayne

In reply to antwan:


Oh, I didn't know they were in series. Thanks.