Dukester
Flashlight Enthusiast
What kind of runtime can one expect while pushing the 1185 with nine 1650mAH NiMH's? I have not looked at the Welch Allyn Website. I do not know if they list current draws for their lamps?
MAG85
- Thread starter Dukester
- Start date
bwaites
Flashlight Enthusiast
25 minutes, plus or minus 5 minutes, due to battery variation. The Nimh will actually improve for a while as they age.
Bill
Bill
Dukester
Flashlight Enthusiast
Thanks Bill - That is what I was guessing. I just went to the Welch Allyn Website and there is a current draw of 3.15a. The lamp is rated at 9.6v, can the lamp handle 13.25v hot off the charger or should the NiMH's rest for awhile before using?
bwaites
Flashlight Enthusiast
Wow, 1.47 volts per cell!
Thats impressive! I have NEVER popped an 1185, but I don't think I have ever had a pack peak that high!
Is is really 13.25 volts when you take it off the charger, without the charger leads attached?
Bill
Thats impressive! I have NEVER popped an 1185, but I don't think I have ever had a pack peak that high!
Is is really 13.25 volts when you take it off the charger, without the charger leads attached?
Bill
Dukester
Flashlight Enthusiast
Thats fresh off my Universal Charger. I take the test leads from my DVM and take a reading and they average between 1.45 and I have taken readings as high as 1.47v. My Charger will charge no matter what the capacity and once capacity is achieve it will maintain a maintenance charge until used. I will often leave cells in the maintenance mode for a couple days before I actually use them but when I do I know they have been topped off...
The 13.25v figure I stated is taking in account that each of the nine cells is reading 1.47v. The chances of everyone of the nine cells reading the 1.47v is remote. Usually there will be a mix bag. I may have a couple reading 1.47v, a couple more reading 1.44v, a couple more reading 1.46v.
The 13.25v figure I stated is taking in account that each of the nine cells is reading 1.47v. The chances of everyone of the nine cells reading the 1.47v is remote. Usually there will be a mix bag. I may have a couple reading 1.47v, a couple more reading 1.44v, a couple more reading 1.46v.
bwaites
Flashlight Enthusiast
Cool, if you're using the cheapbatterypacks.com cells, I suspect you'll be very happy!
I'll do a peak on my pack right now and see if I can really push it and then see what if looks like.
Bill
I'll do a peak on my pack right now and see if I can really push it and then see what if looks like.
Bill
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Dukester
Flashlight Enthusiast
Bill - In all fairness the 1.47v reading was done on 2500mAH Energizers. I did order ten of the CBP 1650mAH but do not expect to get them until the end of the week since I order just last night.
Dukester
Flashlight Enthusiast
[ QUOTE ]
bwaites said:
Cool, if you're using the cheapbatterypacks.com cells, I suspect you'll be very happy!
I'll do a peak on my pack right now and see if I can really push it and then see what if looks like.
Bill
[/ QUOTE ]
It will be interesting, please post your findings...
bwaites said:
Cool, if you're using the cheapbatterypacks.com cells, I suspect you'll be very happy!
I'll do a peak on my pack right now and see if I can really push it and then see what if looks like.
Bill
[/ QUOTE ]
It will be interesting, please post your findings...
bwaites
Flashlight Enthusiast
I peaked my 2000Mah pack at 14.25 volts on the charger, dropped immediately to 13.7 off the charger.
It makes a VERY bright, white light!
Bill
It makes a VERY bright, white light!
Bill
udaman
Banned
- Joined
- Feb 13, 2004
- Messages
- 381
[ QUOTE ]
bwaites said:
I peaked my 2000Mah pack at 14.25 volts on the charger, dropped immediately to 13.7 off the charger.
It makes a VERY bright, white light!
Bill
[/ QUOTE ]
Your "2000Mah pack", meaning Ginseng's soldered AA NiMH batterypack?
Duke, there are lots of experienced users like bwaites or js of TigerLight85 fame, who will tell you they have never instaflashed the WA1185 on 9 cells. I had the longest...umm, how do we call it, "dialog" with Ginseng and more specifically js in numerous PM's, about my concerns with the very potent 1/2D AeroNiMH cells using 9 of these on the WA1185. While I cautioned, no one listed; then LedModMan posted that he indeed instaflashed the WA1185 by impatiently firing that sucker up just off a fresh charge of these bad-*** 1/2D's.
As the CBP1650ma are more potent than any of the high-current capable AA NiMH's that have been used before, there is a remote possibility of driving the 50hr rated WA1185's too hard with these also, fresh off the charger. I suspect the answer will be no, since the AA's are much smaller than 1/2D's; but you will find out soon enough /ubbthreads/images/graemlins/smile.gif
No one knows how much runtime you will get with these new cells, however you will get more what I call 'useful' runtime with these. Meaning even if they don't last as long as higher capacity cells, they will keep the WA1185 running at a slightly higher voltage, so a bit brighter than the other cells, before they do start to dim.
Of course, how bright the WA1185 is driven in M*g3D's or M*gChr's will to a certain degree, depend on how much current is being delivered from the batteries to the bulb. Meaning that there are numerous points of electrical contacts on these lights were there is the potential for oxidative resistance to impair maximum current flows. Surefire likes to use a special expensive grease in their lights. But we could arrange for a $500+ minimum GB on even more expensive high-end grease. What's a few hundred dollars worth of contact grease, when you have a $2,900 Beast anyway? /ubbthreads/images/graemlins/grin.gif
You might want to e-mail CBP to wait on shipping your order, see my post #808937: Need to find a good AA Nimh cell
bwaites said:
I peaked my 2000Mah pack at 14.25 volts on the charger, dropped immediately to 13.7 off the charger.
It makes a VERY bright, white light!
Bill
[/ QUOTE ]
Your "2000Mah pack", meaning Ginseng's soldered AA NiMH batterypack?
Duke, there are lots of experienced users like bwaites or js of TigerLight85 fame, who will tell you they have never instaflashed the WA1185 on 9 cells. I had the longest...umm, how do we call it, "dialog" with Ginseng and more specifically js in numerous PM's, about my concerns with the very potent 1/2D AeroNiMH cells using 9 of these on the WA1185. While I cautioned, no one listed; then LedModMan posted that he indeed instaflashed the WA1185 by impatiently firing that sucker up just off a fresh charge of these bad-*** 1/2D's.
As the CBP1650ma are more potent than any of the high-current capable AA NiMH's that have been used before, there is a remote possibility of driving the 50hr rated WA1185's too hard with these also, fresh off the charger. I suspect the answer will be no, since the AA's are much smaller than 1/2D's; but you will find out soon enough /ubbthreads/images/graemlins/smile.gif
No one knows how much runtime you will get with these new cells, however you will get more what I call 'useful' runtime with these. Meaning even if they don't last as long as higher capacity cells, they will keep the WA1185 running at a slightly higher voltage, so a bit brighter than the other cells, before they do start to dim.
Of course, how bright the WA1185 is driven in M*g3D's or M*gChr's will to a certain degree, depend on how much current is being delivered from the batteries to the bulb. Meaning that there are numerous points of electrical contacts on these lights were there is the potential for oxidative resistance to impair maximum current flows. Surefire likes to use a special expensive grease in their lights. But we could arrange for a $500+ minimum GB on even more expensive high-end grease. What's a few hundred dollars worth of contact grease, when you have a $2,900 Beast anyway? /ubbthreads/images/graemlins/grin.gif
You might want to e-mail CBP to wait on shipping your order, see my post #808937: Need to find a good AA Nimh cell
Dukester
Flashlight Enthusiast
Thanks Udaman for the heads up on the lack of buttontops on these 1650 cells. I guess through the excitement I was unaware of the fact. I am going to call CheapBatteryPack this morning and see if they could add solder buttons to the ten I ordered. If they can't I suppose I could do it myself with a little guidance from one of the hotwire guru's...
bwaites
Flashlight Enthusiast
Udaman makes a couple good points.
The 1/2D's are the exception to the rule on 9 cells. I haven't instaflashed a bulb, but they certainly are capable of it and we have discussed it amongst ourselves at times. There aren't very many of us with loose 1/2D Aero cells though, so it hasn't been much of a problem.
So far as I know, no one has instaflashed with the AA configuration, though the new CBP cells might be capable of it.
Good luck either way!!
Bill
The 1/2D's are the exception to the rule on 9 cells. I haven't instaflashed a bulb, but they certainly are capable of it and we have discussed it amongst ourselves at times. There aren't very many of us with loose 1/2D Aero cells though, so it hasn't been much of a problem.
So far as I know, no one has instaflashed with the AA configuration, though the new CBP cells might be capable of it.
Good luck either way!!
Bill
Bullzeyebill
Flashaholic
Has anyone seen the CBP1650's? I notice that they make mention re batteries without nipple tops, but did not make this caution in their description of their 1650's.
Bill
Bill
Duke,
I've never seen any of my AAs reach over 1.41V per cell. I use the MAHA C401FS and the Triton. As to runtime on the flat top CBP1650s, I'd estimate you'll get 25 minutes or better.
To be fair to CheapBatteryPacks.com, their site sells overwhelmingly to the RC field and their loose cells are intended for pack-building and not general consumer electronic device applications. Flat top and solder tab are by far, the most common configurations for loose cells.
In all the time I've been working with the WA01185 (going on 18 months of experience glowing and blowing), I've never blown one on 9 consumer grade AAs. However, I would consider the CBP1650 to be more similar to the AeroNIMH 1/2Ds in that they are high current-capable and likely to maintain a significantly higher voltage (maybe as much as 0.04V/cell or more) than consumer-grade cells. This means that if it were me, I'd do a voltage demand test to see what 8-cells gives. If the voltage is not too close to that from a 9-cell pack of 2000mAh Sanyos (for example), then I'd take a chance on 9. But if it were less than 0.75V difference, I don't think I'd chance it.
Wilkey
I've never seen any of my AAs reach over 1.41V per cell. I use the MAHA C401FS and the Triton. As to runtime on the flat top CBP1650s, I'd estimate you'll get 25 minutes or better.
To be fair to CheapBatteryPacks.com, their site sells overwhelmingly to the RC field and their loose cells are intended for pack-building and not general consumer electronic device applications. Flat top and solder tab are by far, the most common configurations for loose cells.
In all the time I've been working with the WA01185 (going on 18 months of experience glowing and blowing), I've never blown one on 9 consumer grade AAs. However, I would consider the CBP1650 to be more similar to the AeroNIMH 1/2Ds in that they are high current-capable and likely to maintain a significantly higher voltage (maybe as much as 0.04V/cell or more) than consumer-grade cells. This means that if it were me, I'd do a voltage demand test to see what 8-cells gives. If the voltage is not too close to that from a 9-cell pack of 2000mAh Sanyos (for example), then I'd take a chance on 9. But if it were less than 0.75V difference, I don't think I'd chance it.
Wilkey
Dukester
Flashlight Enthusiast
Hi Wilkey... I must have a bionic charger. Your figure of 1.41v is on my low side on what I read on my AA's fresh off the charger. For me, 1.43, 1.44, 1.45 are more common then 1.47v but on occasion I do read 1.47v. I am not familiar with your charger. Is your an intell smart charger whereas you can leave it on basically 24/7 without a worry. It will go from full charge to maintenance charge automatically? I bought mine from Thomas Distributing and it is the ALLTEK Model and it has the maintenance feature. Talking with Bullzeyebill I may not have to do a solder drop, he told me that the pos end may have a slight raise to it, enough whereas it could make contact with the flat "POS" metal strip in my charger, that was my only concern. I thought the batteries would be in today but no such luck, looks like tomorrow. When the time comes to use these cell's I may PM you just for some moral support if anything, or last minute guidance.
theepdinker
Enlightened
- Joined
- Mar 10, 2004
- Messages
- 373
Hot off the charger my AA's show 1.43-1.46.
Just my 2 volts worth.
Theepdinker
Just my 2 volts worth.
Theepdinker
Dukester
Flashlight Enthusiast
[ QUOTE ]
theepdinker said:
Hot off the charger my AA's show 1.43-1.46.
Just my 2 volts worth.
Theepdinker
[/ QUOTE ]
Mine are within your same range as I stated above.
theepdinker said:
Hot off the charger my AA's show 1.43-1.46.
Just my 2 volts worth.
Theepdinker
[/ QUOTE ]
Mine are within your same range as I stated above.
bwaites
Flashlight Enthusiast
Some of that difference is probably within the tolerance of digital multi meters.
Bill
Bill
Right. Some tolerance is due to the measurement device. When I use the Maha, each is a single cell measurement. When I use the Triton, it is in a built pack or carrier so it is a total measurement and the Triton always delivers exactly 1.40V at termination. At least as far as I have been paying attention. I can leave the batteries on the Maha for a long time.
Also, keep in mind that the exact termination voltage will vary as a function of the charge rate. Higher charge rate will push the terminal voltage higher. The termination voltage drop criteria will be the same though (for example -0.03V). So, your terminal voltage might simply be a result of your particular charger's control scheme. This means the difference between yours and mine is most likely nothing to worry about.
Drop me a line when you're ready to rock.
Wilkey
Also, keep in mind that the exact termination voltage will vary as a function of the charge rate. Higher charge rate will push the terminal voltage higher. The termination voltage drop criteria will be the same though (for example -0.03V). So, your terminal voltage might simply be a result of your particular charger's control scheme. This means the difference between yours and mine is most likely nothing to worry about.
Drop me a line when you're ready to rock.
Wilkey
