By the way, you can find a review of the gen.1 version of the Mini MA here:
http://www.candlepowerforums.com/vb/showthread.php?270918-4Sevens-Quark-Mini-AA-amp-123-Review-BEAMSHOTS-RUNTIMES-PICS-and-more!
so what is your problem, the manufactor of the light did specify run times for AA
he is taking the best availiable cell for max runtime, so that is a lithium 1.5V primary and 10% less with top alkalilines
if you cant get the same runtime with rechargable NiMh thats your problem not the problem of the specs
if you got a XP-G R5 LED inside you reach about 150 lumens/watt at low currents
so your NiMh has 1.2V and 2000mA that is 2.4Wh on paper
a Lithium primary has 1.5V and 3100mA that is 4.65Wh on paper
so 3 LED lumens x80 hours are 240Lh
so I need just a bit over 1.6Wh to power the LED the rest taked the flashlight converter
3.05Wh from the lithium primary are lost in the converter
34,4% efficiency
if you get only 30 hours out of your eneloops
that means from 2.4Wh are only 0.6Wh used to power the LED
so 1.8Wh are lost in the converter
25% eficiency
look at the discharge curves for 100mA at lower loads the Lithium primary will gain more advantage
and the step up converter will work at better efficiency with the lithium or alkaliline
so 80 hours are realistically for them at 3 Lumens
I did not see, in the specs, where there manufacturer specifically stated that one must use a lithium cell, to get the 80 hour runtime.
If that info was listed, please show it to me. Do you not agree, that is important info that the buyer should be told by the maker ?
Furthermore, I find it hard to believe that this light will get 80 hours runtime from a 3000 mah lithium AA battery…when it only gets 28 hours runtime on a 2000 Mah fully charged AA eneloop. …that was charged to full capacity on a slow charge of .2 Amps and then immediately put in the flashlight for testing runtime.
A good alkaliline is just 5-10% less good than a lithium primary on low loads
https://www.google.de/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0ahUKEwjDuqOzjszQAhXMApoKHYiYBpcQFgiNATAA&url=http%3A%2F%2Fdata.energizer.com%2FPDFs%2FE91.pdf&usg=AFQjCNEuogYQB5AkCsXn2DYJvGGaA3oYVg&sig2=bdH_2qZlxJbHpE4HJmw9ww&cad=rja
the lithium primary tops an alkaliline on higher loads
for 3 Lumens moonlight an alkali battery might get 80h
show me in the product specs where the runtimes are referred to be achieved with rechargable batteries
Xtar specifies their Lithium 18650 lights with their batteries, but on an AA light they do for primaries
They also use a XP-G R5 which is not a top LED for efficiency with 150 lumens/watt
In fact, after looking over the specs on the amazon page …it specifically says this light and its specs are rated on using
1x AA (Alkaline, Ni-MH)
you can go look for yourselves.
So all the snide posters, who keep claiming the manufacturer was saying 80 hrs, on lithium only battery, are WRONG.
no, you are wrong.
it specifically says in the specs page on amazon.
nimh/alkalaine.
Lithium is not mentioned at all
would you like to apologize now ?
OK, so if you have 40 eneloop AA’s and the flashlight is testing at 28 hrs “continuous” and you want 72 hrs, again continuous then you just need to replace the battery 3 times during the outage.
Which brings me to another question, do you not have daylight available during these outages that the flashlight could be/should be turned off?
If you have daylight available, you could use a solar charger to give the batteries a boost at least.
I’m not trying to be a wiseazz, just trying to understand your exact situation and needs.
One other flashlight that comes to mind with a very efficient driver is the Thorfire PF03, but it is AAA and those batteries do not pack near the punch of AA so that will probably be out.
Good luck,
Keith
go to the amazon link, scroll down, and you will see the manufacturer specifically says
nimh/alkalaine
lithium is not mentioned at all.
I use my eneloops in everything…so even though I have 40 of them…they arent just laying around unused.
some are in tv remotes…some are in pocket radios , some are in other LED lights, etc.
Hey Lexel…here are the specs
Features:
-ANSI Illumination levels: Turbo High Mid Moonlight
-Luminance: 150Lm 80Lm 30Lm 3Lm
Duration: 1.2h 2h 6hrs 80hrs
-Max Intensity: 1420cd
-Bulb: CREE XP-G R5 LED
-Max Range : 75m
-Working Voltage: 0.9~1.8V
-Impact Resistance: 1.5m
-Switch: Tactical tailcap switch
-Crust Materials: Anodized aircraft6061 aluminium alloy. Hard-anodized anti-abrasive finish
-Water Resistance: IPX8(underwater 0.5m)
Battery:
- 1x AA (Alkaline, Ni-MH)
We can clearly see
Lithium battery is not even mentioned.
You were wrong…?
It says the light runs on Alkaliline and NiMh
there is absolutely no information on testing conditions for battery runtime
like
at 21°C
ENERGIZER L91 Ultimate Lithium
Constant Current Discharge to 0.8 Volts
Now, as I mentioned before , I did not expect the XTAR to get 80 hours runtime on a 2000 Mah eneloop , but I surely expected to get longer then 28 hours runtime. That is a big difference between the companies claimed runtime, and actual runtimes . And we now can see, the company was not claiming 80 hours runtime, on special lithium batteries, because they list nimh/alkalaine as being used . In fact, I will be shocked if this light got close to 80 hours runtime, on a new alkalaine. Maybe thats why it was marked down to $7.50.
It says the light runs on Alkaliline and NiMh
there is absolutely no information on testing conditions for battery runtime
like
at 21°C
ENERGIZER L91 Ultimate Lithium
Constant Current Discharge to 0.8 Volts
correct….it doesnt even mention using lithium battery….therefore you conjecture that the 80 hour runtime, is accurate because the manufacturer is claiming use of lithium, is wrong. the runtimes were for nimh/alkaliane.
now can we admit you were wrong, and / or the company is being deceitful at best ?
you get to 80 hours with an energizer Ultimate alkaliline put one in and see for yourself
you cant expect same runtime from an rechargable battery as you get from a primary cell
from a fenix aaa light
⇒8 Lumen 14:30 Std. NiMH Akku / 15 Std. Alkali-Batterie
⇒25 Lumen 4:15 Std. NiMH Akku / 4:15 Std. Alkali-Batterie
⇒100 Lumen 0:45 Std. NiMH Akku / 0:30 Std. Alkali-Batterie
Gestestet mit einem 750 mAh NiMH Akku und der mitgelieferten Alkali-Batterie. Die Brenndauer im 100 Lumen Modus ist akkumuliert, da die Taschenlampe nach 3 Minuten Betrieb im 100 Lumen Modus zum 25 Lumen Modus herunterschaltet, dann aber wieder neu mit 100 Lumen aktiviert werden kann.
you cant expect same runtime from an rechargable battery as you get from a primary cell
I already admitted that.
Im waiting for you to admit you were wrong, on claiming the rating was for lithium battery.
Contact Xtar and ask em which battery they used to get the runtimes I am almost sure they did it with a Lithium primary
if you got a XP-G R5 LED inside you reach about 150 lumens/watt at low currents
so your NiMh has 1.2V and 2000mA that is 2.4Wh on paper
a Lithium primary has 1.5V and 3100mA that is 4.65Wh on paper
so 3 LED lumens x80 hours are 240Lh
so I need just a bit over 1.6Wh to power the LED the rest taked the flashlight converter
3.05Wh from the lithium primary are lost in the converter
34,4% efficiency
if you get only 30 hours out of your eneloops
that means from 2.4Wh are only 0.6Wh used to power the LED
so 1.8Wh are lost in the converter
25% eficiency
Contact Xtar and ask em which battery they used to get the runtimes I am almost sure they did it with a Lithium primary
The listed spec, by the company, on amazon, state
nimh/alkalaine
Lithium is not mentioned….therefore, if you are correct they are using lithium, then they are being deceptive by not mentioning it.
How can you not admit this ?
If lithium is the only way to achieve 80 hours runtime, then I think the company should mention it. I say this, for several reasons…like
lithium costs more…lithium takes a special charger instead of a normal nimh/nicd charger….lithium can be more dangerous…etc
There is another thing to consider, which is how much charge is lost while sitting on the shelf. I use NiMH rechargeable batteries in many things. I recently bought a (16?) pack of eneloops and recycled some old Energizer’s.
HOWEVER, all of my devices that are strewn about the house for emergency use, have Energizer Lithium primary cells installed. In many cases I have also fashioned insulators out of old business cards that prevents each device from accidental turn on or any standby drain.
I have not run any tests to determine max run time for any of my emergency devices. I do have spare Lithium primaries and multiple methods of charging batteries from virtually any power source. I’m confident that I could easily go months without requiring new cells to generate light. But then I don’t live in a cave where I need a light on 24 hours a day either.
I will check my closet and see if I have any .
For a fair test, buy a new alkaline battery.
Just one.
old alkalines are prone to leak, because the chemistry actually erodes the metal shell as the voltage runs down.
If it’s in your closet, it’s not apt to be fresh.
No offense to your clothes, just talking about the alkaline cell.
There is another thing to consider, which is how much charge is lost while sitting on the shelf. I use NiMH rechargeable batteries in many things. I recently bought a (16?) pack of eneloops and recycled some old Energizer’s.
HOWEVER, all of my devices that are strewn about the house for emergency use, have Energizer Lithium primary cells installed. In many cases I have also fashioned insulators out of old business cards that prevents each device from accidental turn on or any standby drain.
I have not run any tests to determine max run time for any of my emergency devices. I do have spare Lithium primaries and multiple methods of charging batteries from virtually any power source. I’m confident that I could easily go months without requiring new cells to generate light. But then I don’t live in a cave where I need a light on 24 hours a day either.
The eneloop , I used for this test…was fully charged at a slow rate…capacity read 2019 Mahs….it was then put right in the light, and turned on moonlight mode for testing. This eneloop, did not sit on a shelf for days or weeks, where it would lose capacity. I did this test, because I actually thought it would be incredible, if the XTAR got anywhere close to the 80 hour runtime as claimed.