鋰聚電池過低, 如何補救?

本人有5個鋰聚電池, 原電池標記 2S 7.4V 2800mah或1500mah, 原先充完後電壓去到8.2V左右, 不知為何有一天充電, 極限都只充到4.2-4.3V, 現時它們不能係FT009使用....

請問有Ching 可以救助嗎?

用咩充電器?

通常鋰電充滿都係8點4v，7點4係佢最低電壓，屬於正常

用FT009自已的充電牛

pui4yip 發表於 2015-10-23 23:15
通常鋰電充滿都係8點4v，7點4係佢最低電壓，屬於正常

電池有得救嗎?

如果2cell電總電壓得4.3v 應該已經過放，或者你問朋友借其他牌子充電器一試，或者係充電器問題

katattony 發表於 2015-10-24 07:55
如果2cell電總電壓得4.3v 應該已經過放，或者你問朋友借其他牌子充電器一試，或者係充電器問題 ...

我尚有一個7.4V 1500mah(第六個), 它可以充到8.2-8.3V; 所以我覺得不是充電火牛問題...  可能之前隻船入水加上我沒有特別對電池做防水保護, 導致過份濕, 縮短了它們的壽命。。。

有可能死咗1cell.

Well 今天送走它們算了.... 再淘過

hey Mojo8888, if you're talking about yr 2s lipo V too low to change in normal mode, you can do these ( thats what everybody does here in US ):

Carefully charge in NiMH mode at 1/10C charge rate until you get the cells up to 3.7v each ( usually take less than 5 mins ) then stop and switch back to normal Lipo balance / charging mode .  It works every single time man !

V55EVO 發表於 2017-6-12 01:53
hey Mojo8888, if you're talking about yr 2s lipo V too low to change in normal mode, you can do thes ...

Hi V55Evo,

Well i read this after that, but didn't try at all, how about if one cell is missing (like physical 3s, BB check the battary only show it is 2s), this techique is workable for this situation?

mojo8888

Sorry bro that I've never encountered before, what had happened to me was, The batt in my long range FPV plane ( 10000mah ) ,  info shows 7000mah been used , supposed 3000mah left but guess what ? ha........ more than 20% - , and that's the time I need to " wake " up the under V Lipo if normal Lipo charging mode doesn't do the job !

as said, in yr case , you sound like had a bad cell, but you've got nothing to lose by using that method ! but try to drain the other cells first than charge them up ! You can tell within 5mins or so!  Hope it helps !  keep in touch !

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