Berkeley CSUA MOTD:Entry 25429
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2025/07/08 [General] UID:1000 Activity:popular
7/8     

2002/7/26-28 [Science/Battery, Computer/Networking] UID:25429 Activity:very high
7/26    Any local places that recycle alkaline batteries for free?
        \_ Another offtopic question -- how to get rid of used up acetone?
           Since it has a half-life of 22 days in sunlight, and evaporates
           easily I just left it in the backyard in a canteen and it was
           all gone in a day.  Is there a better way?
           \_ I work in a lab where we use a lot of acetone.  We have all
              kinds of rules we have to follow to make sure that the
              organic solvents are disposed of "properly" , but
              as I understand it, it all just gets burned in the end.
              I'm sure there's a better way, but what you're doing is no
              worse than the EPA-approved official disposal method.
        \_ A little offtopic, but here's my chance to put in that
           the rayovac renewal (rechargeable alkaline) batteries work very
           well for many purposes.
           \_ How is it different from the old rechargable NiCd ones?  -- yuen
              \_ They don't lose their charge in storage, and their voltage
                 graph is sharper over time (consistently high voltage
                 and then a sudden drop-off means that your CD player will
                 just turn off instead of producing poor sound).  They
                 also don't have memory, so you can recharge them at any
                 point in their drain cycle.  They last longer per charge,
                 but their useful life cycle is lower than NiCd.  Cadmium
                 is _really_ toxic, alkalines less so.
                 \_ mmm, yummy... cadmium!
                 \_ Are they 1.5V or 1.2V?  Are they available in AA and CR123A
                    (camera battery) sizes?  About how much do they cost?
                    Thanks.  --- yuen
                    \_ I already know about (and have) these batteries. They
                        purport to be 1.5V and come in the normal 1.5V alkaline
                        sizes, like AAA, AA, C, D (I tihnk they come in the last
                        two, anyway). 4 AA's are like, ~$5-6 at fry's. -op
                    \_ op doesn't work with cable modem.  Or dsl. check out:
                        http://www.epa.gov/etv/pdfs/vrvs/06_vr_rayovac.pdf
                        \_ why do cable modems need batteries?
                           \_ for when the power goes out.
                              \_???  UPS.
                                \_ Yeah, but what about when the UPS goes?
                                   \_ Yeah how long is your dinky battery going
                                      to last if your 3 hour UPS can't handle
                                      it?  5 minutes?  Big deal.  Sometimes,
                                      you're just fucked and have to deal with
                                      it.  "five nines" just costs too damned
                                      much.
                                      \_ Apparently, it does work with
                                         UPS.  But it doesn't work with
                                         cable modem.  Cable modem just
                                         gets your account sorried.
        \_ Throw em in da Bay.
           \_ Why don't we cut em open, prop your mouth open with a crowbar, make
              you swallow them, and have your stomach acid handle the
              neutralization? Oh, and it might be interesting to watch too.
                \_ Someone a little constipated?
                \_ Econazi to the rescue, eh?  Get a clue.  It was a joke. Duh.
                   Everyone else knew that.
2025/07/08 [General] UID:1000 Activity:popular
7/8     

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