Experiences over seven years with the battery life in laptop computers Tecra

Seven years ago, I bought a Tecra 780DVD, five years ago a Tecra 8100 and two years ago a Tecra S1. They re all still in regular use and I ve used now six packs of lithium ion batteries. My experience suggests that these four guidelines are worth observing:

1. it is preferable to the hibernation and remove the battery if the laptop will be inactive for more than 2 or 3 days.
2 operating time vary a lot between the samples of battery even with the same operating conditions.
3 leave the charger plugged in with the full light on doesn't seem to hurt (despite some of the recommendations).
4. better is not the first time, that it is unable to charge the battery of junk. The trick described below may reset the battery and get more useful life out of it.

Tecras see the end of battery life by battery light flashes orange or stay off when you try to reload. Last week when I returned from vacation what happened the 780 (now the WiFi print server) and I felt like déjà vu because all 4 batteries (three on the 780) and the other on the 8100 that I ve had previously fail expired the same way they failed to charge after 7 to 14 days of hibernation with the battery left in. In my view, that it can hardly be a coincidence.

I still had another 780 old farm and an old battery for 8100 that both failed about two years ago I did some tests. The batteries two 780 showed 10-11 volts on a voltmeter, but when I put them in the laptop and plugged in the charger, the led load always flashed. However, when I plugged the laptop battery already started the grid only, the hanging lamp orange and after an hour or two went green.

I think this shock treatment can have done in battery electronics forget they were supposed to be dead. Anyway, I did with all three batteries and then ran to see how long d last. The results were:

(1) the 780 battery failed last week (after 36 months used) can now run the laptop for an hour.
(2) the 8100 battery (with the active service of 16 months, but 'believed dead' for two years) will now run for 10 minutes or more.
(3) the 780 battery believed dead for two years (after 19 months used) appears to load but t does not work the laptop. Half of the battery ended up hot and half cold, so now I guess that it s really dead.

Hoping others will compare notes, I've summarized below how long my battery packs lasted before they refused to pay more.

Tecra780DVD:
Original battery: 30 months (discarded too soon. Might have gotten more if I had tried to trick reset).
First replacement: 19 months (stored for two years, after which reset didn't work).
Second alternative: 36 months (after reset now works for an hour).

Tecra 8100:
Original battery: 16 months (stored for 2 years. After reset now lasts 10 minutes).
First replacement: 41 months and always well run.

Tecra S1:
Original battery: 29 months and always well run.

All are genuine Toshiba and operating conditions are quite similar for all. Laptops tend to run 4-8 hours per day with the charger plugged and maybe half an hour on battery only. Sometimes we forget and the charger remains connected all night.

I m now wish I d tried the trick of reset on all batteries as soon as they failed, but at least I seem to have rescued two batteries. Even a moment of execution as short as 10 min is useful on a laptop that s especially power sector. It protects against power failure and you can keep your battery in the fridge until you need it for a trip.

David Tong
Leeds, UK.

Hello Johnson

It seems that you are very big fan of Toshiba laptops :)
Thanks a lot for this long case study and share this information with us.
I'm sure that this info helps many users of the community.
Our community needs more users like you. ;)

Best regards

Tags: Toshiba

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