Lenovo Laptop Batteries

"Jim Thompson" wrote in message news: snipped-for-privacy@4ax.com...

Not Lenovo, but with BT replacement batteries for my Gateway. It over heats then shuts down, when the processor is full bore.

Cheers

"Jim Thompson" wrote in message news: snipped-for-privacy@4ax.com...

Last time I had a "battery problem" there was nothing wrong with the battery at all. It just had a badly designed electrical connection with the computer. Any wiggle in the battery, even less than a millimeter, would break contact. A mechanical problem, in other words.

I'm using a Thinkpad X40. I've had it for 6, maybe 7 years now, cannot remember exactly. I'm on my 2nd battery. First battery finally got to the point where I had about 45 minutes run time. Got a new one on Amazon. No major problems with either of them.

My Mac Book Pro battery, that's a horse of a different color...

My X61s is odd... very little battery use, keep it off charger pretty much to avoid that killer-mode, yet original battery died just after warranty ran out, second battery died abruptly at 2 years. ...Jim Thompson

My use is similar. In a docking station for weeks between customer visits. When I go on the road I will usually make sure and run the battery down before I plug in the charger. My setup is a docking station under a monitor stand so I run the X40 with the lid closed most of the time. Noticed it was running rather warm, almost hot. I put a small fan to move some of the heat out.

Now I did have a Dell laptop that I was running on a charger without a UPS. The battery died after a nasty thunder storm. Dont know if the battery just hit it's life end or the lightening had something to do with it. I now run any laptop on a UPS.

Same here.

Likewise.

Maybe it's just a LiIon thing ?:-(

I've been considering a UPS for the laptop as well.

I already have a UPS on the phone system :-) ...Jim Thompson

"Jim Thompson" wrote in message news: snipped-for-privacy@4ax.com...

liIon's life can be expected to be about a year or 2. They age from the day they are made, so if you get an old pack it'll die early.

They also age faster if they are fully charged. Best to keep them at %70 state of charge. And they age faster at higher temperatures.

Theres a wealth of information scattered about on the aging process.

Cheers

=A0 =A0 =A0 ...Jim Thompson

LiIon life (even shelf life) goes down exponentially with voltage. I've 10-year old cells stored at 3.6-3.7V that are like new (impedance & capacity). Colder storage extends life too, IIRC. You have to be careful though--3.6V is nearly empty, and if you forget and let them drop below ~3v, they're toast.

OTOH if you keep them at 4.2V (full), cycled or no, in two years they're dead.

-- Cheers, James Arthur

Surfing seems to indicate that Sanyo is the culprit.

My local Batteries Plus has a Ray-O-Vac replacement.

Is that good/bad/indifferent? ...Jim Thompson

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Spice is like a sports car... Performance only as good as the person behind the wheel.

"Jim Thompson" wrote in message news: snipped-for-privacy@4ax.com...

Its difficult to tell what cell manufacturer the rebuilders use. Panasonic is one that is highly recommended. Its possible the Ray-O-vac uses the Panasonic cell, or perhaps someone else's, such as LG or Samsung.

I've been tempted to try these guys.

Cheers

Probably made in China by Ningbo Baowang.