Lipo 電好用又安全

原帖由 sn-10 於 2007-11-24 02:02 發表

                               
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其實即係打孖上, why? 佢有2個孔, 要飛線short左佢先可以一野差12s架...咪即係同串2個lba10 一樣囉...哈

可能拆開直頭係兩塊電路板...

oh thx again
then i don't know why those cut off device is 6.25v...it mean 3.125v cut per cell woo
and if 3.8 x2 then it is 7.6v
lipo one cell is 3.7 v ? x2 = 7.4v
if play 7.6v then stop...only can charge up to 1xxxmah after play..but the battery is 4700mah le...
too many question mark in my mine now...
but if i still want keep the battery performance...i guess i need stop overrun it..le say play 6 min fast motor then recharge them ....

個cut-off係用黎保護你排電唔會嚴重過放，係安全措施，唔係用黎叫你用到cut-off先停。

另外，有loading同無loading情況下，voltage相差好遠，你度到剛充飽時voltage係4.2V，你試下駁隻摩打開著佢個voltage係幾多，視乎loading大少，voltage亦隨住變化，但當排電無駁野時電壓會慢慢升返上去，呢個亦係個cut-off set到咁低嘅原因，因為當你個摩打draw current越大，電壓會越低，出灣俾油嗰下可能電流好大，嗰一煞那電壓會好低，但之後電壓會升返，如果cut-off高的話出灣嗰一下以經cut左。

3.7V per cell係nominal voltage，係當粒電响normal loading下個平均值，唔係open circuit時，我話3.8V係open circuit voltage。

至於用完入返幾多mAh，就以低過80%為安全，4700mAh的話大約3700mAh為安全無過放，電用得耐用量會少，可以充返入去電量亦減少。如果你買排4700mAh想用盡4700mAh，你排電一次就玩完。

點解d人係都要挑戰d鋰電?! 全世界d人都係3.7v cut,
當長期過放時,舊電性能有所下跌又話d電唔噤玩,冇新嗰陣咁正~

Lipo protector 6.25V cut-off係正常，你講嗰個3.7V可能係open circuit voltage。

原帖由 SnackEater 於 2007-11-24 15:28 發表

                               
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Lipo protector 6.25V cut-off係正常，你講嗰個3.7V可能係open circuit voltage。

我既cut既意思係收車唔玩咁解

thx so much
really learn more
anyway.....thx snackeater give me those advise....i will keep the voltage not under 7.6v when after play and not overrun my lipo battery...


[ 本帖最後由 abcde 於 2007-11-24 20:00 編輯 ]

原帖由 SnackEater 於 2007-11-24 15:28 發表

                               
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Lipo protector 6.25V cut-off係正常，你講嗰個3.7V可能係open circuit voltage。

Been following this thread and it seems experts here recommend that it is important to monitor the voltage of the Li-Po to be at least 3.7V per cell.  Pls confirm.

其實LiPo电电量太太多，你玩到累玩到嘔佢都有排未到7.4V啦，唔好成日咁介意D數值嘅，一年半載电力下降咪買過囉，咁先係出嚟玩嘛，果陣肯定出到仲平仲勁

Exactly, want to enjoy RC as a hobby instead of spending most of the time charging and fixing.  Would the current Li-Po battery & charger technology mature enough for newbies such that it's just plug & play?

more than enough

原帖由 Brushless 於 2007-11-24 22:20 發表

                               
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其實LiPo电电量太太多，你玩到累玩到嘔佢都有排未到7.4V啦，唔好成日咁介意D數值嘅，一年半載电力下降咪買過囉，咁先係出嚟玩嘛，果陣肯定出到仲平仲勁

玩原裝摩打可能真係玩到嘔都未玩完，但好多人都係玩快摩打或brushless 4.5R, 3.5R，十多分鐘玩完，如過唔留意自己玩幾耐，玩到架車唔郁先停，排電一次KO，要玩到一年半載嘅鋰電唔係講咁易。

4.5R/3.5R 都玩十二分鐘以上啊，D呔水一早冇晒，人嘅集中力一早下降，係場玩其他人一早上又落，落又上啦！

仲磨仲磨

原帖由 Ang 於 2007-11-25 00:05 發表

                               
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Exactly, want to enjoy RC as a hobby instead of spending most of the time charging and fixing.  Would the current Li-Po battery & charger technology mature enough for newbies such that it's just plug  ...

其實衣家鋰電已經好成熟，好方便，充電同保養其實比Nimh簡單，只要計住放電時間，唔好貪心已經可以保養得好好，但係落到場就好易忘形。

[ 本帖最後由 SnackEater 於 2007-11-25 00:52 編輯 ]

Thanks for the valuable input.  This thread discussed Li-Po battery & charger.  Is there any discussion thread that talks about Brushless ESC & Motor available on the market?

For instance, is there any entry to mid-level brushless ESC & motor package hobbyist recommend?

A quick search on the web shows the following brands/makes of Brushless ESC & motor:
Novak, LRP, Mamba, Align

Any other manufacturers other than the above?  Comments?

[ 本帖最後由 Ang 於 2007-11-25 12:54 編輯 ]

點解要自已攞嚟煩呢，揀咁多嘢，睇預算再响其中一間大廠是旦買啦！

E + D 新電變識自動cut 電架啦,唔洗怕過放電,次次都玩到自動停先換電

原帖由 SnackEater 於 2007-11-24 14:11 發表

                               
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個cut-off係用黎保護你排電唔會嚴重過放，係安全措施，唔係用黎叫你用到cut-off先停。

另外，有loading同無loading情況下，voltage相差好遠，你度到剛充飽時voltage係4.2V，你試下駁隻摩打開著佢個voltage係幾多， ...

請參考我之前個post...

原帖由 anes 於 2007-11-25 15:50 發表

                               
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點解要自已攞嚟煩呢，揀咁多嘢，睇預算再响其中一間大廠是旦買啦！

Hi, just read the forums and someone has mentioned 10.5R, 8.5R, 4.5R etc, what do these numbers mean?  Also, read that Mamba is "sensorless", for a newbie, do I need to pay close attention to these info?

If there's another discussion thread about this subject, then pls kindly let me know.

Thanks for the info.

since you can write and read good english, you can visit teamnovak official website, it contains a very good FAQ and should be able to answer all you questions.