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Green Building Bible, Fourth Edition
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  1.  
    I'm talking AA and AAA batteries, what brands do you use?

    Normally I just buy what's on offer in the pound shop etc but there must be a 'greener' battery?

    Rechargeable probably a good option, any idea on brands etc?

    Thanks
    • CommentAuthorowlman
    • CommentTime7 days ago
     
    Personally I haven't had much luck with rechargeable AA & AAAs so I don't buy them anymore.
    • CommentAuthorIan1961
    • CommentTime7 days ago
     
    I use the Eneloop range of rechargeable AA & AAA battery. They are very good for use in appliances that only get used infrequently as they retain their charge very well when not being used.

    https://en.wikipedia.org/wiki/Eneloop
    • CommentAuthorBeau
    • CommentTime7 days ago
     
    Saw a review on rechargeable batteries on the Gadget show some years ago and Uniross came out very well. Bought a charger and batteries from Toolstation and they have been excellent. Now have lots of AA and AAA from Uniross and had no failures to date.
    • CommentAuthorgravelld
    • CommentTime7 days ago
     
    Another Eneloop user. Eneloop Pro are best for my use (although fewer recharges, the limit is still quite high).

    Need to invest in a decent charger as well I think.
    • CommentAuthorsam_cat
    • CommentTime7 days ago
     
    Eneloop and Eneloop pro for anything that needs it (I am a photographer, the flash requires good batteries), and a good charger is worth its weight in gold.. I use a Technoline BC 700 charger (beware the cheap clones that look the same and claim to be the same, they are not. A proper one will cost about £35)

    We also have a small pile of cheap rechargeables which work well enough for wall clocks/kids toys etc.
    •  
      CommentAuthorDamonHD
    • CommentTime7 days ago
     
    We have used hundreds of GP ReCyko NiMH rechargeables in a recent trial, and I use lots of the Maplin own-brand at home, plus some of the LSD/hybrid ones.

    All good.

    But don't run them right down and leave them that way:

    http://www.earth.org.uk/What-to-do-with-150-bad-NiMH-AA-cells.html

    Rgds

    Damon
    • CommentAuthorsnyggapa
    • CommentTime6 days ago
     
  2.  
    Had a look on eBay and there's all different types , different amperage etc. What is a normal size to replace remote control batteries etc? They are AAA but not sure on amperage required?
    • CommentAuthorsnyggapa
    • CommentTime4 days ago edited
     
    The number you see won't be amperage, it will likely be mah - milliamp hours - a measure of capacity. You can use any mah rated AAA, the difference is the higher the mah the longer they last , in almost direct proportion.

    remote control batteries prob don't need much at all, you're unlikely to charge them more than once a year no matter what you get - 750,800 or thereabouts

    for AA I'd look at 2000mah for general purpose stuff , 2500 if it has to absolutely last as long as it can
    • CommentAuthorMike1
    • CommentTime3 days ago
     
    Eneloop again, plus Technoline BL-700 Intelligent charger.
    • CommentAuthorgoodevans
    • CommentTime3 days ago
     
    Eneloop for me also. But batteries designed for dect phones are also good (usually low capacity but many recharges). The trick here is not to buy batteries with high capacity - to get high capacity the manufactures make the anode/cathode (I don't remember which) stacks too thin which break down. (high capacity exception being eneloop).

    Also the NiMH batteries don't suffer memory problems so strict a regime of discharge is not required.
    • CommentAuthorgravelld
    • CommentTime3 days ago
     
    The other thing you have to watch is voltage. The reason I only use Pros is because they seem to keep their voltage better than the normal Eneloops. This seems to matter for things like radio TRVs like the rebadged Danfoss ones I have. At lower voltages the TRVs just seem to give up in a non-deterministic (to me) fashion.
  3.  
    <blockquote><cite>Posted By: goodevans</cite>The trick here is not to buy batteries with high capacity - to get high capacity the manufactures make the anode/cathode (I don't remember which) stacks too thin which break down. (high capacity exception being eneloop).</blockquote>

    So the total life is shorter (before you bin them?). That's interesting.

    Does that apply to all 'eneloop' type batteries (ie non-self-discharge) or are eneloops better than all others for some reason?
  4.  
    I was just about to order some Uniross batteries (being the cheapest of the brands mentioned) and I noticed there are a load of unbranded ones from Honk Kong for 25% of the price. Are these likely to blow up or worth a punt??
    • CommentAuthorMike1
    • CommentTime16 hours ago
     
    Posted By: Simon Stillare eneloops better than all others for some reason?

    Yes, it's not marketing hype, Eneloops really are better. They incorporate various advances in manufacturing processes and the chemical composition & structure of the materials used - particularly the alloy used for the cathode - that aren't found in other NiMH batteries. Presumably because Sanyo/Panasonic hold the patents.
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