From: Thomas T. Veldhouse on
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.

> http://www.amazon.com/gp/product/B0002IOIMQ/ref=pd_cp_e_1/102-9027916-3679350?pf_rd_m=ATVPDKIKX0DER&pf_rd_s=center-41&pf_rd_r=13CR2D1N93F61Y1B1MFQ&pf_rd_t=201&pf_rd_p=250314601&pf_rd_i=B000H8XGJC

--
Thomas T. Veldhouse

We have more to fear from the bungling of the incompetent than from the
machinations of the wicked.

From: Thomas T. Veldhouse on
SMS <scharf.steven(a)geemail.com> wrote:
> Yuki wrote:
>
>> Seems that the current incarnation has the reference BCG-34HRMF4, comes bundled
>> with 4 2700mA Sanyo made batteries, priced around $30.
>
> It's okay, but the charge rate is pretty low with four batteries, only
> 525 mA. With NiMH batteries, there's a fine line between too low of a
> charging current and too high of a charging current. Too low, and it may
> not detect end-of-charge correctly. Too high, and it may heat the
> batteries to the point where it reduces their useful life.
>

So, then you can't recommend the Maha MH-C401FS either, can you?

Rapid Charge Current: 1000mA (AA), 500mA (AAA)
Slow (Gentle) Charge Current: 300mA (AA), 200mA (AAA)
Trickle Charge: 50mA

Come on man ... don't act like an authority here ... we know the MH-C401FS is
an awesome charger and I highly doubt that the above mentioned Sony is bad
because it charges at 525mA.

> I'd avoid that charger just because there are much better chargers
> available now. It's a fairly old design. While the LCD display is nicer
> than just an LED, such as what's on the Maha MH-C401FS, the MH-C401FS is
> a better choice.
>

Hmm.

--
Thomas T. Veldhouse

We have more to fear from the bungling of the incompetent than from the
machinations of the wicked.

From: ASAAR on
On Thu, 12 Jul 2007 17:36:42 GMT, Thomas T. Veldhouse 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.

I've told him that for quite some time, but he's stuck in a rut
with his old anti-NiMH bias. It still shows in that he has yet to
admit that the Eneloops, Hybrid and Hybrios have lower
self-discharge rates than Li-Ion, but at least he now doesn't
dismiss them completely. As you've indicated, for some people,
usage patterns would make standard NiMH batteries preferable. I see
nothing wrong with making a general statement that Eneloops might be
a better choice if you don't know how they'll be used. But if you
do know, making a choice based on knowledge and not on ignorance
will always be the smarter way to go.

From: SMS on
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.

Yes, this is true. There are some instances where the higher capacity is
more valuable than the low self-discharge.
From: SMS on
Thomas T. Veldhouse wrote:

> So, then you can't recommend the Maha MH-C401FS either, can you?
>
> Rapid Charge Current: 1000mA (AA), 500mA (AAA)
> Slow (Gentle) Charge Current: 300mA (AA), 200mA (AAA)
> Trickle Charge: 50mA

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
hot. This assumes that the lower charge rates are still high enough to
cut off charging properly, but since the primary method of charge cut
off is voltage plateau sensing (dV/dt), it should be fine. 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.

> Come on man ... don't act like an authority here ... we know the MH-C401FS is
> an awesome charger and I highly doubt that the above mentioned Sony is bad
> because it charges at 525mA.

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?
"http://www.velocityreviews.com/forums/t417031-sony-bcg34hue4-ultra-15-battery-charger.html"

I may buy the Ultralast charger today, I want to try some low-discharge
batteries as an alternative to the lithium AA batteries.