TENAVOLTS AA Lithium 1.5V rechargeable cells

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flydiver
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Well, that’s a [DUH!] moment. They put those in devices. I guess I could too. Facepalm

xxo
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Pete7874 wrote:
Lightbringer wrote:

Anyone have observations that they run down fairly quickly?

Since they run at full 1.5V, they will spend themselves faster than other cells that run at lower voltage.

How many amps does the E03 pull?

Also, when the Tenavolt cell has no more energy to give, it may show 0V on my DMM, from what I’ve seen.

The Tenavolt cell I took out of a xeno eo3 after it shut off running on high read 0.24V fluctuating wildly to about 0.60V. The tenavolt ran this light more like a 14500 than a eneloop – brighter with a lot more heat and shorter run time. In direct drive lights, the Tenevolts are great. The run at full brightness until they are almost dead when they start to dim and flicker. In most fully regulated lights, Tenavolts seem to run pretty much like standard eneloops.

Lightbringer
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xxo wrote:
In direct drive lights, the Tenevolts are great. The run at full brightness until they are almost dead when they start to dim and flicker. In most fully regulated lights, Tenavolts seem to run pretty much like standard eneloops.

Hmm, odd. Mine was going full tilt and then just shut off without warning. Try turning it on, nope, nothing. No flickering nor dimming.

I’d like some kind of indication, in fact. That’d at least give me some warning.

Alkaleak, lit right up. 14500, lit right up. Tenavolt, nope.

Recharged it, lit right up.

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Pete7874
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Lightbringer wrote:

I’d like some kind of indication, in fact. That’d at least give me some warning.
Have you not seen the completely flat discharge curves posted by HKJ? Smile
Lightbringer
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Oh, I’ve seen ‘em, but still wish there’d be some kind of warning. It’s a bit disconcerting to be shaving your face and have the beastie just up’n‘die as if you switched it off. Bad enough NiCd cells would do that over 5sec or so. Having it happen instantly is definitely a “Whoa, what happened??” moment.

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xxo
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The Xeno just shut off – I think the protection circuit kicked in.

Running tenavolts in a couple of flashlight/lanterns combos, a energizer weatheready 2AA and a life gear 3AA is where I got the dimming/flickering…..thought it might have something to do with the multiple cells, but I had the same thing happen with a inova X1 which suddenly dropped from full brightness to a few lumens and soon started to flicker. I’m not sure what is going on, but this is what happened.

flydiver
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I think there may be some variation in cut-off. I’ve got some that simply go to 0v, and others that do kind of what you are saying. But, when it’s flickering, it’s done.

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Could be chuggle. Ie, voltage under load when it’s spent drops too low, the circuit stops functioning, load drops to near-0, voltage rises, it kicks in ever so slightly for a “flicker”, then the cycle repeats ‘til the cell’s so spent that it doesn’t come back on again at all.

Neighbor whose yard abuts mine has an idiotic spotlight in his yard, where the sensor must be in the beam or at least catching enough light from it. Turns on, sensor thinks, “Ooh, it’s light out!”, then shuts off 5sec or so later. Then, “Ooh, it’s dark out!” and it comes back on another 5sec or so later. And the cycle repeats.

All.

Night.

Long.

Think of the “flicker” as a very fast and thankfully very transient effect like this.

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