Re: Time change..smoke

On Nov 1, 1:30 pm, "Jack Denver" <nunuv...@xxxxxxxxxxxx> wrote:
Not just check the battery but maybe replace the whole thing - if yours are
more than 10 years old, the reliability may be questionable. Your life may
depend on this $10 device going off. New ones are cheap. There have been
new developments - they now have dual type alarms that combine an ionization
and photo electric type in one device (each is good at detecting a different
type of fire -opticals are good at detecting cool smoldering fires up to
30 minutes earlier) Last year I needed a new battery but ended up buying a
new detector once I read up on this.

Just finished researching over and picking up a Canon A560AI. Along
the way, (besides great prices on memory cards), shopped for a battery
setup.

The new technology in batteries is SANYO Eneloop (couple others
variously named and relating to Hybrids) -- the Eneloop is about "slow
discharge" benefits. Charge up a pair of AA/AAA Eneloops, 6 months
later return to use them, and there's only a 75% hit lost over time/
storage discharges characteristics. (The characteristic is a non-
linear loss coefficient over time: as time increases less discharge
loss incurs). With last year's batch of NiMH batteries, this was not
the case -- there is a much higher loss over shelf storage. The only
downside I see is they're around 2100-milliamp batteries. Device/
applications requiring a higher current (alkaline can run as high as
2800) may not be suited.

Last is a charger unit, optionally, which can become an intricate
affair when stepping up to "smart chargers" . Basically it's narrowed
into a few, three or units units with the most regard generated,
ranging in price from $30-40/US. Problem being, none of the units
favorably reviewed include Sanyo's Eneloop batteries (all were
traditional NiMHs with high time-loss charge characteristics). A
Sanyo setup for 4 Eneloop AA cells, including a "dumb" charger,
although proficiently matched for a Sanyo charger, ran me $17/US
inclusive of shipping.

Rechargables haven't worked out for me. I've had them (RatShack's)
vent acid into sensitive equipment and destroy the works. Overall,
they never seem stay up to snuff and perform for long. With the
latest "slow discharge" technology - well, hopefully the favorable
reception they're getting will prove their worth. Amazon reviews
provide a more detailed field for the above three product aspects if
there's further interest.
.

Relevant Pages

  • Re: Sanyo eneloop at Costco
    ... find a use for all 12 Eneloop batteries. ... excuse to shill his website. ... getting a charger with a couple of batteries, ...
    (rec.photo.digital)
  • Re: Charging NiMH batteries (slightly OT ?)
    ... The instruction leaflet says "Batteries MUST be completely discharged ... Discharge setting. ... I thought that NiMH batteries could be topped up from any ... My camcorder has an in-built charger and I've always ...
    (rec.photo.digital)
  • Re: aa rechargeable lithium batteries
    ... consumer batteries are now shipped charged. ... discharge rates are very high and if those batteries were only several ... The Eveready 15 minute charger is outstanding. ... Normally a fully charged battery just off the ...
    (rec.arts.movies.production.sound)
  • Re: Charging NiMH batteries (slightly OT ?)
    ... The instruction leaflet says "Batteries MUST be completely discharged ... Discharge setting. ... cheap dumb charger. ...
    (rec.photo.digital)
  • Re: Self discharge of Eneloop hybrid AA batteries
    ... only 17 hours for the fully charged batteries (I used the same batteries, ... me high for 2000 mAh batteries; even my 17 hours looked to me to be high; I ... I picked up a set of Sanyo eneloop AA cells: ... The other pair was charged in a good 2-hour charger, ...
    (sci.geo.satellite-nav)
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