Hi Jeff, Thanks for the info. That pdf is where I learned that this charger
only runs for 8.5 hours and it recommends stopping at certain times for
certain mah batteries. It works nice for me because I can plug it into 120
or 220 where ever I am. And my batteries are always depleted before I charge
them.
Only problem is that I bought the battery pack for my ht and it takes 10 but
charger only charges 4.
http://www.ebay.com/itm/160593039544... 4.m1497.l2649
But the batteries I bought were these ones
http://www.ebay.com/itm/New-Camera-R...item4cf59ac314
I have bought these batteries before for my home phones and they work great.
The home phones batteries lasts for weeks without putting back on the
charger. I guess I am used to the ni cads because I like to deplete 100%,
just a habit.
But that charger pumps out 360 ma at 2.8v and if I do the math that tells me
they charge completely at 8.3 hours. That falls within the operating range
of the charger. Why does the instructions say 8.5 hours for the 2650 mah
battery for full charge? Is the charger that innefficient that there is 20%
loss? Or were the first couple charges not effective like you said. This is
the third charge and the HT emptied quickly. Plus I am now pulling the
charger and plugging in again only for about 1.5 hours. Would you recommend
that?
Since it is for my HT I would only assume it qualifies for antenna subject,
I am surprised that absolutely none of the dozen local electronic stores and
box stores had any idea what I was talking about, even the energizer tech
support line were scratching their heads, yet seems so logical a question
for me because I want those battery lives to last as long as possible and
charging is the answer there. Hense my original question about the charger.
These batteries measure all 1.38 volts when charged pretty consistantly and
1.17v when depleted, other than that I cannot measure the efficiency of the
charger to predict time of charge, according to the manufacture it should be
9.9 hours, according to the math 3000mha devided by 360 ma of the unit says
8.3 hours to charge full capacity.
Which is it?
73s
"Jeff Liebermann" wrote in message
...
On Mon, 26 Mar 2012 20:22:09 -0400, " Tuuk"
wrote:
Anyone familiar with the Energiser CHDC-CA Battery Charger?
Yep. I have one. Piece of junk. Works only with NiMH. It will kill
a NiCd battery and will overcharge a partly charged battery.
http://data.energizer.com/PDFs/chdc.pdf
"Best used with Energizer NiMH batteries."
Note that it's obsolete.
Now, my new batteries ni mh are 3000 mah.
Maybe, under ideal conditions and with a very small load. Otherwise,
I've never seen a 3000ma-hr battery.
I have a West Mtn Radio CBA-II battery analyzer:
http://www.westmountainradio.com/product_info.php?products_id=cba3&navcode=/cbaLink1
I've tested a few of the flea market NiMH batteries claiming to be
3000ma-hr and found them lacking. I'll post the graphs (if I can find
them).
Incidentally, did you know that it requires one or two initial charge
cycles to get an NiMH battery up to full capacity? I didn't believe
it so I ran some tests:
http://802.11junk.com/jeffl/NiMH/
It's not much, but it's certainly real. Note that the load was on the
high side at 1C resulting in measured battery capacity lower than
claimed. This is normal, but I was in a hurry.
Anyone have experience with these? Just typical rechargable batteries for
camera. Any tips on charging these properly?
If it's only run by a timer, it's a piece of junk. It probably
assumes that the batteries to be charged are totally discharged, and
after 8.5 hrs of charging, will be fully charged. That sucks because
a half charged battery will be overcharged by that method. If the
batteries get warm, they're being overcharged.
What it should do is look for a decrease in terminal voltage,
indicating EOC (end of charge).
http://en.wikipedia.org/wiki/Nickel%E2%80%93metal_hydride_battery#.CE.94V_charg ing_method
Mo
http://batteryuniversity.com/learn/article/charging_nickel_metal_hydride
Now, can be get back to antennas?
--
# Jeff Liebermann 150 Felker St #D Santa Cruz CA 95060
# 831-336-2558
# http://802.11junk.com
# http://www.LearnByDestroying.com AE6KS