Sony NP-QM91D Lithium-Ion Battery won't take a full charge anymore

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I've got a Sony digital camcorder that I'm using with the Sony NP-QM91D
Lithium-Ion Battery, and I can't seem to get it to take a full charge
anymore. It used to go up to about 430 minutes and now I can't get it
to go above 405 minutes -- and I'm even having trouble doing that. The
FULL indicator will come on at about 355 minutes and I have to
disconnect and reconnect the power cord several times to get it up to
405. To be fair, I've had the battery for about a year now. Do they
just start to lose their OOMPH after awhile, or is something wrong?

 

[Dave D]

Do they
just start to lose their OOMPH after awhile,

Yes.

Dave

 

[Jumpster Jiver]

I've got a Sony digital camcorder that I'm using with the Sony NP-QM91D
Lithium-Ion Battery, and I can't seem to get it to take a full charge
anymore. It used to go up to about 430 minutes and now I can't get it
to go above 405 minutes -- and I'm even having trouble doing that. The
FULL indicator will come on at about 355 minutes and I have to
disconnect and reconnect the power cord several times to get it up to
405. To be fair, I've had the battery for about a year now. Do they
just start to lose their OOMPH after awhile, or is something wrong?

Yep, as they get older their capacity to hold a charge gets lower. Get
as much use out of it as you can then dispose of it when it's no longer
useful. Preferably not in your regular trash. Find a place that
recycles them or properly treats them as hazardous waste. Some stores
such as Lowes, Best Buy, Circuit City have a bin to toss used
rechargeable batteries in. Hopefully they're really disposing of them
properly and not just tossing them out with the regular trash.

 

[Asimov]

"Dave D" bravely wrote to "All" (15 Oct 05 20:33:42)
--- on the heady topic of "Re: Sony NP-QM91D Lithium-Ion Battery won't take a
full charge anymore"

DD> From: "Dave D" <dave_d@dave_d.com>
DD> Xref: core-easynews sci.electronics.repair:345374

Do they
just start to lose their OOMPH after awhile,

DD> Yes.
DD> Dave


But their OOMPH is so impressively scary for their size!

A*s*i*m*o*v

 

[Dave D]

But their OOMPH is so impressively scary for their size!

They're great aren't they! It's a pity they're so expensive though. Having
said that, some Li-Ion phone batteries are incredibly cheap on eBay.

Dave