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屋企有兩個 sony ericsson 的 charger
CST-13
CST-20

前者 450mA, 後者 850mA

大 current 除o左 charge 得快 D 外 , 請問仲有什麼好處 ?
另外有什麼壞處 ?

thank you

我唔係做電池, 我只係用當年讀書時Physics的角度去答你.

引像中, 有條equation係 power=電流(mA)x電壓(V)
電流大, 電壓細左, 電壓細即係電阻會大, 所以電池會好快熱, 夠熱佢就會停止充電, 所以你以為佢充完電.

相反, 電流細, 電壓即係大左, 電阻亦係細左, 所以電池充極都唔會熱(當然充到爆炸另計), 所以充好似充好耐, 但其實佢係Fully charge.


中學時, 做過一個實驗. 就係用Motorola既火牛去充 Panasonic GD93既電.
Motorola既電壓係比Panasonic大的, 好似係5V對3V的分別.

結果, 電池要用多一倍時間先充得完(即係夠熱停機)
但舊電竟然可以用到成個星期. @@"


ThatsWhy..

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熱愛音樂, 愛好玩樂. 對音樂有冇興趣既你都歡迎黎癲番晚!!

因為火牛入面線圈比例限定了輸出的電壓 (Voltage), 只要火牛標明的電壓一樣, 其實應該分別不大.
只是大電流 (Current) 的火牛入面的用料可以支援較高電流的輸出.

If it is the same output voltage, just output current is difference, the higher current is better than lower one.

Don't warranty the current, your mobile phone has power management circuit to monitor the whole charging process, protect the mobile phone and battery are not damage, and the higher current one will shorter the charging time. If your battery and charge are the good one, no damage will be happened, because they have thermofuse or thermo switch to ensure the devices are not overheat. Normally it will shut down at around 105C.

The disadvantage for the higher current one is that, the power consumption is high, then the lost is high too. You need to pay more money to power station company.

I hope it is good for you!

Cheers!

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