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標題: 電池問題 [打印本頁]

作者: 01607359 時間: 2006-8-12 10:03
標題: 電池問題
聽人講話discharge時唔好放晒d電, 咁請問1粒電入面要留番幾多V係道?

作者: AMAT 時間: 2006-8-12 10:05

原帖由 01607359 於 2006-8-12 10:03 發表
聽人講話discharge時唔好放晒d電, 咁請問1粒電入面要留番幾多V係道?

基本上,如果當你玩車,玩到O架車行唔郁,咁果時O的電唔係話冇晒電,仲有小小電係到呢....咁就已經係OK....
至於等如幾多V.....我就唔知喇.

作者: 01607359 時間: 2006-8-12 11:43
咁我用差電機來discharge 電, 請問應set幾多V cut off?

作者: Motorman 時間: 2006-8-12 12:00

原帖由 01607359 於 2006-8-12 10:03 發表
聽人講話discharge時唔好放晒d電, 咁請問1粒電入面要留番幾多V係道?

Based on 6 cells battery pack:
20A discharge..... cut off voltage is 5.4V
25A discharge..... cut off voltage is 5.1V
30A discharge..... cut off voltage is 4.8V

If using high current rate discharge, the battery is still have lot of power even cut off voltage is 4.8V........ therefore you have to use equalizing discharger (as Novak one) after hight current discharged. Only low current discharge (around 1A) will give you a correct voltage after discharged.

Equalizing Discharger

登錄/註冊後可看大圖

New battery may maintain the voltage as the cut off voltage...... but old battery's voltage will be higher than the cut off voltage after a few minutes....... say it sample... discharge a new battery or good battery, the cut off voltage is 5.4V... after unplug, the battery will maintain that voltage (5.4V) until you recharge again.....

if discharge an old battery with 1A and cut off voltage is 5.4V..... after unplug and wait a few minutes, the voltage will raise back up to 6V.... even 7.2V..... don't be afraid, it's normal........ if you find the voltage get higher and higher after playing sometime, then you may need to buy a new one because the battery getting old and doesn't work very well again.

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