Energizer E2 Lithium AAA Life.

[LarryQ]

Just what would be considered the "Life" of AAA E2 Lithiums in a Nova X-105?

THanks

LarryQ

 

[verybigkitty]

17

 

[Ashton]

17? 17 what? it would have made more sence if you'd posted "42" as that's certianly the answer! (lol)

I'm intereste din this too, since I have a brand-new pack of E2 lithiums sitting here waiting for my X-85 to arrive...

 

[LarryQ]

17

Way to contribute!!!!

I actually got a chuckle at that answer!

Seriously.....they are high dollar batts....but WOW does my Nova Like them!!!!

Just trying to understand what to expect from a pair of AAA e2's

Larry

 

[pseudonomen137]

17

A just answer ;D

Unfortunately you can't put a set time because its not like the laser works for x minutes and then stops. The output slowly drops off until it starts flickering, or mode changing, or something else to let you know you're out of juice.

Here is energizer's spec sheet on the AAA E^2 liths: http://data.energizer.com/PDFs/l92.pdf

With an x-105 the pump diode is ~500mW, so lets just assume power input is somewhere ~1.5-2W between inefficiency in the diode and driver. That means your current draw on 2xAAAs will be ~500-667mA (this figure is pretty accurate in practice actually). You can use those numbers with the spec sheet to get an idea of how long you have before the laser can't lase anymore.

 

[LarryQ]

Thanks....

Looks to be just over 1 hour at those drain numbers total before I replace...

Cool...those were some very imformative charts!!!!

Man...these higher power lasers are an addiction...all they do is make you want MORE!!!!

Larry

 

[7histology]

Yeah addictive - you want a Hercules now don't you?

Good figuring by pseudo as usual. Could he figure out similar for 3X11AH 'D' in a Hercules?

 

[LarryQ]

Now...wait a Min....1 hour can't be right.....

Am I reading that chart correctly?????

Could someone double check me on that???

I think we are missing one piece of the puzzle to find the answer....

The laser will stop Lasing at a value greater than ZERO.....so while there is still power remaining in the cells...for all essential purposes it's dead.

Larry

 

[Aseras]

it would depend on the voltage threshold of the diode, BUT lithiums hold their voltage right up until they go flat for the most part. so if you have 2 AAA lithiums with a combined capacity of 2400mah and you draw say 700 ma/h on a load. assuming you get 85% you should get ~3.5 hours

the threhold though is considerably lower though so you should actually get closer to 95% before they go low enough to start suffering a voltage drop serious enough to stop lasing.

 

[LarryQ]

WOW...
I thought I was being overly optimistic with 1 hour!!!!

If you can get 3 hours out of a set of Lithiums, why do people go for the rechargeables???

3 hours on a single pair of lithiums, (and My nova LOVES them)...seems way too good to even bother with a charger.

Regular alkalines, I can see the need for rechargeables...but with the availability of Lithiums.....

Interesting.....What am I missing???

Larry

 

[Cyparagon]

They're relatively expensive - Especially for an addict.

 

[Things]

well you can reuse them! some rehargeables like Ni-Mh do keep there output voltage till the end of their life too!

 

[Ashton]

What about Lithium-ion batteries? I know lithium-palamer are too high a voltage, but what about Li-ion? they're rechargeable!

 

[Gazoo]

Larry,
The capacity of an energizer primary lithium battery is 1250 mah's. Not 2700 mah's! Look at the data sheets.

http://data.energizer.com/SearchResult.aspx

Ashton,
The voltage of a single lithium ion battery fresh off the charger is 4.2 volts. From there the voltage will drop quickly to appx. 3.7 volts, and then slowly drop from there.

 

[Ashton]

intriguing, that's the same voltage as Li-poly batteries....

Anyone know anyhting about how to recharge normal lithiums? can you just feed them voltage like with normal alchalines?

 

[Gazoo]

intriguing, that's the same voltage as Li-poly batteries....

Anyone know anyhting about how to recharge normal lithiums? can you just feed them voltage like with normal alchalines?

Anyone doing this with any type of non-rechargable batteries is waiting for a terrible accident to happen, especially with lithiums...don't do it!

Get some decent AAA NIMH batteries. I am using eneloops in my X105 and they are holding up very well. I just got back from the store and bought a pack of E2 AAA lithiums to try in it. I will be reporting back a little later.