Boom!!! Boom!!!!! Fire 作者: Samsunny 時間: 2010-11-8 11:04
真的這麼危險?????
有乜方法預防鋰電發漲???作者: tomlaua31 時間: 2010-11-8 11:38
keep 50%-80%power,is ok作者: chacha 時間: 2010-11-8 11:44
lipo over charge lithium --> lipo over charge lithium
World's Most Dangerous Battery! ---> World's Most Dangerous Battery!
Lipo 電 Spec:
***Storage***
Unlike certain other types of batteries, lithium polymer batteries can be stored for one or two months without significantly losing charge. However, if storing for long periods, manufacturers recommend discharging the battery to 40% of full charge. In addition, other sources recommend refrigerating (but not freezing) the cell
***Charging***
LiPoly batteries must be charged carefully. The basic process is to charge at constant current until each cell reaches 4.2 V; the charger must then gradually reduce the charge current while holding the cell voltage at 4.2 V until the charge current has dropped to a small percentage of the initial charge rate, at which point the battery is considered 100% charged. Some manufacturers specify 2%, others 3%, but other values are also possible. The difference in achieved capacity is minute.
Balance charging simply means that the charger monitors the voltage of each cell in a pack and varies the charge on a per-cell basis so that all cells are brought to the same voltage.
It is important to note that trickle charging is not acceptable for lithium batteries; Li-ion chemistry cannot accept an overcharge without causing damage to the cell, possibly plating out lithium metal and becoming hazardous. Most manufacturers claim a maximum and minimum voltage of 4.23 and 3.0 volts per cell 低過3V每片電就過放,這片電池就要說再見. Taking any cell outside these limits can reduce the cell's capacity and ability to deliver full rated current.
Most dedicated lithium polymer chargers use a charge timer for safety; this cuts the charge after a predefined time (typically 90 minutes).作者: chiyuen 時間: 2010-11-8 12:07
請看我的 PM作者: chiyuen 時間: 2010-11-8 12:19
如果是微 漲,不一定的,可以用义機 setting 到 LIPo MOD 放電每 Cell--3.00 V , 跟著 set 2 cell放電,用5-10A, 放完電隔1小時, 跟著用5A 充電, ( 最好义機有温度 sender, 可以看到電池了溫度,如有不正常,即時關义機和拔開插 ) ,如效果不理想,可以齊放電然後隔幾日,再充電,如沒改善可以放到垃圾桶.
還有不張電 過放或 over low,一舨可以放半個鐘,安全時為15分鐘,
