new energizer 1 hour smart charger?
- Thread starter Lynx_Arc
- Start date
Help Support Candle Power Flashlight Forum
Marduke
Flashaholic
More info
http://data.energizer.com/PDFs/ch1hr-2.pdf
That's a mighty high charge rate for what is essentially a travel-size charger. I hope you have a fan blowing across it or something.
http://data.energizer.com/PDFs/ch1hr-2.pdf
That's a mighty high charge rate for what is essentially a travel-size charger. I hope you have a fan blowing across it or something.
PonchoTA
Newly Enlightened
I have an older version (I think!):
Datasheet: http://data.energizer.com/PDFs/chdc.pdf
I'm thinking about getting a newer one though. This seems to work well enough though. Handles AA and AAA both.
:cheers:
Datasheet: http://data.energizer.com/PDFs/chdc.pdf
I'm thinking about getting a newer one though. This seems to work well enough though. Handles AA and AAA both.
:cheers:
Marduke
Flashaholic
I have an older version (I think!):
Datasheet: http://data.energizer.com/PDFs/chdc.pdf
I'm thinking about getting a newer one though. This seems to work well enough though. Handles AA and AAA both.
:cheers:
That is a simple timed charger (dumb charger) which will kill cells in short order.
should be a little more gentle than their 15 minute charger.
Marduke
Flashaholic
True, but a 2.5A charging current is quite harsh, especially with no method of cooling.
that was kind of why I was interested if anyone had one or not. I have a 1 hour rayovac charger but it more like 1.5A/hr with a cutoff of about 1800mah I think.
Sorry guys.....personally, I wouldn't want either one of em.
Both are just basic timed chargers with a few safety measures thrown in.
The ch1hr-2 would seriously overcharge any type of lower capacity NiMh or even a high capacity cell that was not fully discharged.
For an AA cell, if you do the math on the statement;
'Shutoff Mechanism: Timer 80 min. charge, 12 hr. trickle'
it ends up pumping an AA cell with 3334mAh before it shuts off.
Yeah, on a fully discharged 2700 or 2900 mAh cell, that would not be a problem. But on a partially discharged cell, or on a lower capacity one, say in the 1600mAh to 2000mAh range, its a bit of overkill.
If you do that every charge cycle...you definitely will not get the advertised amount of recharge cycles (actually not anywhere close) unless you are using the high capacity cells and are VERY diligent about making sure they are FULLY discharged before EVERY charge cycle.
On the upside.....you never have to worry about a missed termination on a charge cycle...hehe.
Both are just basic timed chargers with a few safety measures thrown in.
The ch1hr-2 would seriously overcharge any type of lower capacity NiMh or even a high capacity cell that was not fully discharged.
For an AA cell, if you do the math on the statement;
'Shutoff Mechanism: Timer 80 min. charge, 12 hr. trickle'
it ends up pumping an AA cell with 3334mAh before it shuts off.
Yeah, on a fully discharged 2700 or 2900 mAh cell, that would not be a problem. But on a partially discharged cell, or on a lower capacity one, say in the 1600mAh to 2000mAh range, its a bit of overkill.
If you do that every charge cycle...you definitely will not get the advertised amount of recharge cycles (actually not anywhere close) unless you are using the high capacity cells and are VERY diligent about making sure they are FULLY discharged before EVERY charge cycle.
On the upside.....you never have to worry about a missed termination on a charge cycle...hehe.
Mr Happy
Flashlight Enthusiast
Ah now why do you say that? You couldn't have a timed charger with a 2.5 A charge current -- it would not only cook lower capacity cells, it would explode them.
Here's what the CH1HR-2 says on the data sheet:
Delta V Charging Cut Off
Short Circuit and Reverse Polarity Protection
Safety Timer to Prevent Over Charge
Bad Battery Detection
Temperature detection at 60°C
Charging Time:
Capacity 2450 mAh, Estimated time 60 min
Capacity 2000 mAh, Estimated time 50 min
So overall it looks like it has the expected charge control features, only I do think a 2.5 A charging current is higher than I would like to see. If it was down at about 1.5 A it would be more attractive. It would keep the charge rate in the 0.5-1.0C range.
well I currently have a BC900 that is annoying when charging 4 cells setting them at 1000mah takes effort, I have a 15 min energizer that charges really fast but you could fry eggs on the batteries and it is hard on them.... and a 1 hour rayovac that shuts off after 1800mah so I have to at times charge things twice on it. I would like one that is between 1-2 hours for 4 cells with seperate channels and indicators too that doesn't cost another $30 to get.
Mr Happy
Flashlight Enthusiast
Yeah -- in spite of all the chargers out there that is a hard feature set to satisfy.
In some ways it is better to just stump up for a C9000 at the outset and avoid spending the same amount of money on collecting two or three other chargers first.
Black Rose
Flashlight Enthusiast
The charger included in Flic's group buy in the market place (Sanyo NC-MQH03U) would have met most of your needs.
like you said..... almost
I want channel indicators so I can use cells without waiting for the last cell to charge, with the sanyo charger you listed above you could conceivably not know a cell that needed 15 mins to charge was done until 2 1/2 hours later (charging 4 cells at once). It is on the right track with two rates though. I like my BC900 but one of the buttons is worn out already have to press it really hard to see the different display options and having to set each cell seperately every time to get a rate over 200/500 is a pain IMO... they should allow you to program default settings. I find myself using my rayovac 1hr charger most of the time and having to remove/replace larger batteries to get past the 1800mah timer cutoff at times.
Marduke
Flashaholic
Sounds like you don't know how your BC900 works that well. It can charge 4 cells at 1A just by upping the current on all of them at once. No need to individual address each cell.
For just two cells, it can charge up to 1.8A. Again, no special programming for each cell other than hitting the "current" button a couple times. No individual cell addressing needed.
For just two cells, it can charge up to 1.8A. Again, no special programming for each cell other than hitting the "current" button a couple times. No individual cell addressing needed.
I thought I had read it.... must have been sick at the time I never knew it would do that
My search still continues though as I do need two chargers some of the time and what I have now works but if I could sell or trade 4 of my chargers for 2 that did what I want I would be better off. I have 2 rayovac 1 hour chargers and 2 energizer 15 min chargers. The 15 min chargers are good if you need to charge more than 4 cells in an hour but if you have two 1 hour chargers then you don't need to fry them 15 mins and fry another set another 15 mins. I should fix the button on my BC900 and put in an LED backlight.
Marduke
Flashaholic
Why the big rush to charge to many cells? With several Eneloops, you simply charge at your leisure and set aside until needed. If you have a lot of cells which are dead when you need them, it's most likely because they have been fried in a fast charger.
Ah now why do you say that? You couldn't have a timed charger with a 2.5 A charge current -- it would not only cook lower capacity cells, it would explode them.
Here's what the CH1HR-2 says on the data sheet:
Delta V Charging Cut Off
Short Circuit and Reverse Polarity Protection
Safety Timer to Prevent Over Charge
Bad Battery Detection
Temperature detection at 60°C
Dummy me...my mistake. I totally overlooked the line that indicates DeltaV Charging cut off.
That makes it quite a bit better, but the charging rate of 2.5A is still a bit too high for my taste.
csshih
Flashlight Enthusiast
I Don't trust fast "smart" chargers. The batteries always get extremely hot-- to hot to touch, and I wonder what that does to the battery.
its says "Safety Timer to Prevent Over Charge"
timer? what if you put a half dead cell in?
its says "Safety Timer to Prevent Over Charge"
timer? what if you put a half dead cell in?
I have a 15 min charger... most smart chargers detect bad cells and wont charge them anyway. I have been using a 1 hour charger and not a problem with it charging 1500mah cells. sure it cooks some of them but think about all the nicad chargers out there on drill packs charging in an hour too... lotsa current going through some of them.
