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From: SMS on 12 Jul 2007 17:02
Thomas T. Veldhouse wrote:
> SMS <scharf.steven(a)geemail.com> wrote:
>> As to batteries, get Eneloop or Hybrio, not standard NiMH.
> That completely depends upon usage pattern. If you are travelling and
> planning to shoot a lot of pictures for instance, the higher capacity standard
> NiMH (i.e. 2700mAh) might make more sense. Also, consider the Rayovac Hybrid
> over the Hybrio batteries if you live in the US as they are made by the same
> manufacter [Spectrum] in China and are otherwise the same battery, but easier
> to find an probably cheaper ($8.99 for four at Walmart).
>> If you're near a Fry's, look for the Ultralast charger that comes with
>> Hybrio batteries, and which meets your other criteria, though it does
>> include USB capability you don't have to use it.
> Target and Walmart [and Circuit City] sell Rayovac batteries and chargers and
> Circuit City sells both Rayovac and Eneloop.
The USB charging capability is _really_ nice to have. When I had the
Panasonic charger with that capability it saved space when traveling
since I had a notebook computer with me anyway. I like to travel light
when I go to Asia, and reducing the number of wall warts is a prime way
to save space. This is one reason why I like the Li-Ion cameras, the
chargers are usually very small, with no wires, the battery slides into
the charger, and the charger has a flip out plug.
From: SMS on 12 Jul 2007 17:02
Thomas T. Veldhouse wrote:
> Yuki <nospam(a)gmail.com> wrote:
>> On Wed, 11 Jul 2007 06:22:10 -0000, "mehlREMOVETHIS(a)cyvest.com"
>> I'm very happy with a Sony BGC-34HRMD that meets all of above, has a LCD display
>> and refresh function. It uses a short cable for power, no wall wart. Weight
>> 5oz/139g. Medium charge speed, around 4 hours for 4 depleted AA batteries.
>> Seems that the current incarnation has the reference BCG-34HRMF4, comes bundled
>> with 4 2700mA Sanyo made batteries, priced around $30.
> They sell it at Costco for $24.99 and it comes with two AAA (1000mAh)
> batteries as well as the 4 AAA (2700mAh) and the charger. The charger claims
> the ability to condition the batteries, which is likely a decent plus.
Which Costco? The one's around here have a Duracell charger and
batteries for $30 IIRC. No great deal.
From: ASAAR on 12 Jul 2007 17:39
On Thu, 12 Jul 2007 14:01:55 -0700, SMS wrote:
> Sure I can, the 1000 mA is fine. The 500 is low. Again, it's a trade-off
> with charge rates, if you believe the NiMH battery experts. Higher
> charge rates get you more of the rated capacity, while lower charge
> rates make the batteries last longer because the batteries don't get
Nonsense. I've spoken with the experts employed by the battery
manufacturer's battery charger divisions, and they've said that when
charging at high rates, because they don't want to risk damaging
batteries by terminating charge too close to the fully charged
point, their 'fast' chargers were designed to switch to trickle
charge rates when the batteries reached from 85% to 90% of a full
charge. At that point most users would think that their batteries
were fully charged and would remove them, but if the wanted them to
reach a full charge, might need to leave them in the charger for
another 3 to 6 hours.
> Only the more expensive chargers do dT/dt sensing, in the less
> expensive chargers the temperature sensing is just for over-temp,
> not for determining end of charge.
If they do, I can see it working well in the specially designed
cells designed for RayOVac's 15-minute charger, which has electronic
components within the NiMH cell. If you place the temperature
sensing thermistors inside the charger, it's not going to get an
accurate read of the temperature within the cells. Maybe if
temperature sensing probes were taped directly onto the cells.
Which expensive chargers are you talking about? It might help us to
determine if you know what you're talking about or are just blowing
more of your usual smoke. I'd appreciate knowing not just the model
number and manufacturer, but whether they were designed to operate
with AA NiMH cells, or if these are industrial chargers costing
hundreds to thousands of dollars, used with proprietary batteries.
> I never said it was bad. Just that the charge rate is a little low, and
> that other chargers are better. There is a problem with it (at least the
> one person I know with the charger had the problem) and that is that
> sometimes it proclaims that a perfectly good battery is bad. I Googled
> "BCG-34HRMD bad" to see if anyone else had experienced this problem, and
> low and behold someone had, and guess who it was?
<raising hand> Yes, I did. I've mentioned numerous times that
the batteries that are rejected by chargers (all of them, made by
Duracell, Energizer, RayOVac, Maxell and others, not just this
particular Sony) can usually be charged using a very inexpensive
Radio Shack 'smart' charger. I've mentioned this model because it
is an extremely small, collapsible charger, small enough that you
could fit a couple in a shirt pocket, and it uses no wires or wall
warts, making it extremely portable. I'm pretty sure that you have
no test results comparing how different chargers evaluate suspect or
damaged batteries, but you sure have no qualms about making "The sky
is falling" implications about them, Chicken Little.
I wouldn't be surprised if these same 'rejected' batteries would
also have been rejected by the Maha and other chargers that you
frequently tout. What's surprising, though, is how you could try to
dissuade someone from buying the Sony charger, since it's an
excellent one that is available for a very low price (less than 1/2
the price that you usually quote for generic NiMH chargers), yet
you've recommended an unknown quality Ultralast charger that you
have never used and which provided practically no information on the
package other than it had a 90 minute charge rate, and it wasn't
even listed on its manufacturer's website.
From: ASAAR on 12 Jul 2007 17:42
On Thu, 12 Jul 2007 14:02:06 -0700, SMS wrote:
>> They sell it at Costco for $24.99 and it comes with two AAA (1000mAh)
>> batteries as well as the 4 AAA (2700mAh) and the charger. The charger claims
>> the ability to condition the batteries, which is likely a decent plus.
> Which Costco? The one's around here have a Duracell charger and
> batteries for $30 IIRC. No great deal.
Maybe you didn't recall correctly? I bought a Duracell charger
recently (Rite-Aid) for a little more than $20, and someone
mentioned it being on sale (it sounded like the same one, including
4 AA cells) in Walgreens, IIRC, for $10. That's a really good deal.
From: y_p_w on 12 Jul 2007 19:27
On Jul 11, 4:44 pm, SMS <scharf.ste...(a)geemail.com> wrote:
> Bill wrote:
> > On Wed, 11 Jul 2007 12:02:00 -0700, "mehlREMOVET...(a)cyvest.com"
> > <m...(a)cyvest.com> wrote:
> >> Steve --
> >> Thanks for all the suggestions and information.
> >> There is a Fry's a few miles from me. Thanks for mentioning them.
> >> Larry
> > Lary,
> > I have the Maha MH-C401FS and love it. 4 batteries on independant
> > circuits so they each will charge as needed. Fast and slow charge
> > options. I only use mine on 110 volt, but believe it came with a 220
> > volt adapter.
> It used to come as either the "regular" edition with 110V only, or the
> "International" edition with 110/220, not sure if Maha still does this.
Actually a 100-240V AC in a low-profile charger. They still sell some
kits with the larger 110-120V "wall warts".
Thomas Distributing now only sells the MH-C401FS with the
"international" adapter - I think.