Záruka na batériu

[Xenon]

Ako neviem na čo konkrétne si ma chcel upozorniť, ale celé je to o tom, ako fungujú batérie a palivové články, fakt by som rád videl ten dôvod, kde to je napísané, že nesmiem vybiť do nuly batériu.

[Snake]

Je to tam písané, ale keď už, tak vyhľadávač použiť vieme?
http://www.bing.com/search?q=li+ion+dee ... ORM=IE10TR

A unique drawback of the Li-ion battery is that its life span is dependent upon aging from time of manufacturing (shelf life) regardless of whether it was charged, and not just on the number of charge/discharge cycles. So an older battery will not last as long as a new battery due solely to its age, unlike other batteries. This drawback is not widely publicized.[5]

At a 100% charge level, a typical Li-ion laptop battery that is full most of the time at 25 degrees Celsius or 77 degrees Fahrenheit, will irreversibly lose approximately 20% capacity per year. However, a battery stored inside a poorly ventilated laptop may be subject to a prolonged exposure to much higher temperatures than 25 °C, which will significantly shorten its life. The capacity loss begins from the time the battery was manufactured, and occurs even when the battery is unused. Different storage temperatures produce different loss results: 6% loss at 0 °C(32 °F), 20% at 25 °C(77 °F), and 35% at 40 °C(104 °F). When stored at 40% charge level, these figures are reduced to 2%, 4%, 15% at 0, 25 and 40 degrees Celsius respectively.[6]

Li-ion batteries can even go into a state that is known as Deep Discharge. At this point, the battery may take a very long time to recharge. For example, a laptop battery that normally charges fully in 3 hours may take up to 42 hours to recharge. Or, the deep discharge state may be so severe that the battery will never come back to life. Deep discharging only takes place when products with rechargeable batteries are left unused for extended periods of time (often 2 or more years) or when they are recharged so often that they can no longer hold a charge. This makes Li-ion batteries unsuitable for back-up applications compared to lead-acid batteries, and even to Ni-MH batteries.

Because the maximum power that can be continuously drawn from the battery depends on its capacity, in high-powered (relative to C, the battery capacity in A·h) applications, like portable computers and video cameras, rather than showing a gradual shortening of the running time of the equipment, Li-ion batteries may often just abruptly fail.[citation needed]

Low-powered cyclical applications, like mobile phones, can get a much longer lifetime out of a Li-ion battery.[citation needed]

A stand-alone Li-ion cell must never be discharged below a certain voltage to avoid irreversible damage. Therefore all systems involving Li-ion batteries are equipped with a circuit that shuts down the system when the battery is discharged below the predefined threshold.[7] It should thus be impossible to "deep discharge" the battery in a properly designed system during normal use. This is also one of the reasons Li-ion cells are rarely sold as such to consumers, but only as finished batteries designed to fit a particular system.

When the voltage monitoring circuit is built inside the battery (a so-called "smart" battery) rather than the equipment, it continuously draws a small current from the battery even when the battery is not in use; furthermore, the battery must not be stored fully discharged for prolonged periods of time, to avoid damage due to deep discharge.

Li-ion batteries are not as durable as nickel metal hydride or nickel-cadmium designs and can be extremely dangerous if mistreated. They are usually more expensive.

Či všetko vám treba už rovno pod nos hodiť? Na nete máš merania, krivky, atp. stačí hľadať.

[Xenon]

No, Snake, nechcem sa hádať, ale toto:

A stand-alone Li-ion cell must never be discharged below a certain voltage to avoid irreversible damage. Therefore all systems involving Li-ion batteries are equipped with a circuit that shuts down the system when the battery is discharged below the predefined threshold.[7] It should thus be impossible to "deep discharge" the battery in a properly designed system during normal use. This is also one of the reasons Li-ion cells are rarely sold as such to consumers, but only as finished batteries designed to fit a particular system.

When the voltage monitoring circuit is built inside the battery (a so-called "smart" battery) rather than the equipment, it continuously draws a small current from the battery even when the battery is not in use; furthermore, the battery must not be stored fully discharged for prolonged periods of time, to avoid damage due to deep discharge.

Neznamená, že ak vybijem baterku na 0%, tak jej robím zle. Každá baterka má v sebe monitorovací čip, ktorý ju nikdy nevybije úplne, len ak ju nechám dajme tomu pol roka ležať ladom. Lenže pri každodennom používaní ju iste znova dobijem, takže tvoj argument je síce pravdivý, že nie je dobré vybíjať baterky na 0%, lenže keď mne vypne nb, tak baterka má v skutočnosti ešte stále dostatok energie, aby nebola "deeply discharged" a samozrejme, keďže používam nb každý deň, v dostatočnom čase ho dobijem a deep discharge nenastane.

Ale ten poznatok, že ak je baterka "uskladnená" a je nabitá len na 40%, tak sa menej opotrebúva (ekvivalent situácie, kedy je nb v sieti a baterka je v ňom "uskladnená"), je dosť fajn. Hneď si to idem zmeniť teda.