RC EVOLUTION - 遙控工房 - 香港RC遙控車討論區

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點測試出排 ni-mh 電有冇死電?

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1#
michealp 發表於 2008-10-12 22:45:09 | 只看該作者 回帖獎勵 |倒序瀏覽 |閱讀模式

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我試過用隻他錶, 度 volt, 粒粒都有 1.2 -1.3v
咁係唔係就代表冇死呢? 應該唔會咁 simple 的...

咁仲應該 test d 乜呢?
thx
2#
ryancmlam 發表於 2008-10-12 22:52:03 | 只看該作者
You should add a relatively high current load (e.g. discharging the battery by a battery charger such as Much More Cell Master) to the battery and then check the voltage of individual cell.

If you don't have a high current load, the simplest way (but not so accurate) is to use a 540 motor connect to each cell one by one and check the cell votlage (e.g. if it drops to below 0.8 even after charging, the cell is probably death). This method could help to identify the very poor condition cell.
3#
 樓主| michealp 發表於 2008-10-12 23:19:13 | 只看該作者
原帖由 ryancmlam 於 2008-10-12 22:52 發表
You should add a relatively high current load (e.g. discharging the battery by a battery charger such as Much More Cell Master) to the battery and then check the voltage of individual cell.

If you ...

thx first
咁即係如果半死的就 check 不到出來?
4#
ryancmlam 發表於 2008-10-12 23:26:10 | 只看該作者
Under the same loading, the more the voltage drop, the worse of the cell condition is.
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