家應該知道鎳隔(Ni-Cad)充電電池具有記憶效應吧~雖然說鎳氫(Ni-MH)電池的記憶效應與以前的鎳隔(Ni-Cad)電池相比較,記憶效應已經少很多了,但這效應依然存在,不像鋰離子(Li-ion))電池是完全沒有記憶效應的.
記憶效應就是說如果電池沒有完全用光電力,然後就給他丟進充電器給他充電,則蓄電量會慢慢變少,唯有給它徹底的放電再充電,才能恢復原有的蓄電量.
不過一般的充電器都沒有提供電的的功能,所以小宗宗打算自己做一個放電器,方法很簡單,買一個電池座,然後接上電阻即可.當然電阻值需要計算過的,不然電池會燒掉或是完全放電時間需要極長的時間.
經過小宗宗的計算,大約8歐姆1W的電阻,即可將兩顆1.2V三號1600mAH的電池在最多五小時三十分鐘的時間放電完畢.有興趣的玩家可以嘗試做一個玩玩看.
照片是228和平公園裡拍的
I think someone know that the Ni-Cad and Ni-MH rechargeable battery has “memory effect”. It will be gradual loss of maximum battery capacity. The only way to restore the battery’s capacity is to fully discharge and recharge the battery. But most of the batter charge doesn’t have the discharge function to discharge the battery. Don’t worry, you can make one. Connecting the two 1.2V battery with a 8 ohm 1W resistance. You can try it but try it at your own risk.
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