Modifications

{{ADFImage|Piles-Lithium-et-bouton.jpg|640px}}

{{ADFImage|Piles-Lithium-et-bouton.jpg|640px}}

Most of the lithium batteries you'll see are in coin/button cell form. Coin cells are small discs ([http://commons.wikimedia.org/wiki/File:Coin-cells.jpg see above]), often Lithium cells are used (3V) but Alkaline, zinc air, and manganese are also used (1.5V).

{{bloc-etroit|text=La plupart des piles Lithium que vous rencontrerez aurons la forme d'une pièce ou d'un bouton. Les piles boutons son de petits disques ([http://commons.wikimedia.org/wiki/File:Coin-cells.jpg voir ci-dessus]), elles utilisent des cellules Lithium (3V) mais vous pourriez trouver des piles Alkaline, zinc air et manganèse (1.5V).

They are very small and very light, great for small, low-power devices. They're also fairly safe, have a long shelf life and fairly inexpensive per unit. However, they are not rechargeable and have high internal resistance (which is what makes them fairly safe if there's only one or two in use) so they can't provide a lot of continuous current: 0.005C is about as high as you can go before the capacity is seriously degraded. However, they can provide higher current as long as its 'pulsed' (usually about 10% rate).

Ces piles sont très petites et très légères, génial pour de petits périphériques à basse consommation. Elles sont aussi très sure (sécurisée) et disposent d'une très longue durée de vie pour un prix vraiment intéressant. However, they are not rechargeable and have high internal resistance (which is what makes them fairly safe if there's only one or two in use) so they can't provide a lot of continuous current: 0.005C is about as high as you can go before the capacity is seriously degraded. However, they can provide higher current as long as its 'pulsed' (usually about 10% rate).