Quark AA2 Tactical

aL01 · Jul 20, 2010

I got the eneloops to replace my Duracell's, and I was wondering...

After awhile my Quark gets real dim, how dim you might wonder, dim enough to require a battery change...so I measured the voltage on a multimeter, and the eneloops readout at 1.13volts-

Shouldn't 1.13volts supply enough amps to maintain the quality and quantity of the beam as freshly charged eneloops, which I measured at 1.33volts after sitting in a drawer for about a week?

Does this sound ok?

Bad batterie(s)/charger? Bad flashlight?

Thanks!

Phaserburn · Jul 20, 2010

aL01 said:
I got the eneloops to replace my Duracell's, and I was wondering...

After awhile my Quark gets real dim, how dim you might wonder, dim enough to require a battery change...so I measured the voltage on a multimeter, and the eneloops readout at 1.13volts-

Shouldn't 1.13volts supply enough amps to maintain the quality and quantity of the beam as freshly charged eneloops, which I measured at 1.33volts after sitting in a drawer for about a week?

Does this sound ok?

Bad batterie(s)/charger? Bad flashlight?

Thanks!

Actually, sounds about right to me. You don't want to deep discharge nimh past 1.0V anyway.

aL01 · Jul 20, 2010

Phaserburn said:
Actually, sounds about right to me. You don't want to deep discharge nimh past 1.0V anyway.

The runtime seemed ok, but the numbers had me concerned-

Thanks Phaserburn!

red02 · Jul 20, 2010

Phaserburn said:
Actually, sounds about right to me. You don't want to deep discharge nimh past 1.0V anyway.

Any reason why? I've read in the battery section that 0v is ok for a single NiMH

Phaserburn · Jul 20, 2010

red02 said:
Any reason why? I've read in the battery section that 0v is ok for a single NiMH

I don't believe that's true. Deep discharging nimh cells past 1v can be harmful to the cell.

red02 · Jul 20, 2010

Is it a different case for Eneloops?

According to Mr.Happy in a single cell application the lowest voltage the cell can reach is 0 V and this will not particularly harm an eneloop

Phaserburn · Jul 20, 2010

Not that I am aware of. Once a device has it's performance drop (like a flashlight out of regulation), it's best to remove the cell shortly thereafter. A nimh cell should, after resting a bit, bounce back to a voltage reading of around 1.2V with no load; this is the important measure. So fresh out of the device, I would say a reading of 0v would be damaging to the cell to some degree.

Quark AA2 Tactical

aL01

Newly Enlightened

Phaserburn

Flashlight Enthusiast

aL01

Newly Enlightened

red02

Enlightened

Phaserburn

Flashlight Enthusiast

red02

Enlightened

Phaserburn

Flashlight Enthusiast

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