Understanding your Lipo Batt

[REVOJohn]

lipo running in

fyi guys
i have been hearing all these stories from walk in customers to out office about running in batteries.
can confirm hundred percent that there is no such need. buy, charge and play.
lithium electrochemistry does not need running in. if anything you are merely shortening the life cycle than anything else. anwone who tells you that you need to run-in lipo packs either had bad quality packs that have not been through a proper formation process or does not know what they are on about. happy flying guys

[REVOJohn]

Can recommend which charger can do that?

well I'll have to say any of the revolectrix models we make in Singapore. you can some and test one out. sure hyperion can do also but the el cheapo ones definitey won;t

[tansc]

Can recommend which charger can do that?

[REVOJohn]

Hi,

I recently charged the EMAX Li-Po battery that came with the Cessna 182 i bought using Tahmazo T15plus charger in the lab. However, when i plug it in, the charger shows an error message of "balancer voltage is too low". I ask the lab tech and he say the balancer must have 3~4.2V if not the battery is spoiled. Is that true? Is there anyway i can salvage the problem or I need to get a new one for my project?

Your charger is unable to rescue your pack as a cel is under voltage. Some of the better chargers can fix this problem of undervoltage cells

[REVOJohn]

Can anyone advise on the use of Li-Ion instead of Lipo?

Roy:
What type if LithiumION? Standard LiCO or LiFEPO4 (eg A123)

[roypwee]

Can anyone advise on the use of Li-Ion instead of Lipo?

[Gnahznay]

Oh, i checked the Li-po voltage and it shows 1.81V... and the chargers shows that my balancer is at 1.79V...

[Gnahznay]

Charging my Li-po batt

Hi,

I recently charged the EMAX Li-Po battery that came with the Cessna 182 i bought using Tahmazo T15plus charger in the lab. However, when i plug it in, the charger shows an error message of "balancer voltage is too low". I ask the lab tech and he say the balancer must have 3~4.2V if not the battery is spoiled. Is that true? Is there anyway i can salvage the problem or I need to get a new one for my project?

[charles]

Invitation

This is an invitation from H-energy company. We invite you to join Shanghai R/C Model Fair this year .
H-energy battery company is going to attend the R/C pageant"Shanghai International Model Exhibition"as a exhibitor on June 6th-8th,2009.We warmly invite you and our customers to join in.
Our position is on the ground floor at No.099 showroom. It is a good chance to know each other well and to work with .It will be our great pleasure if you would come .See you in Shanghai soon!

Open Date:June 6th-8th, 2009
Intex Shanghai
Sat. 09：30--16：30
Sun. 09：00--16：30
Mon.09 ：00--13：00

ADD: 88 Loushanguan Road, Shanghai , P.R. China
www.shmodelexpo.com.cn/en/

Contact person : Charles (Male)
Cell phone in China+86) 13560338812
MSN On-line : h-energysale06@hotmail.com

Welcome your inquiry and information before Shanghai Fair & warmly regards from H-energy

Youchuang H-energy battery co.,LTD(H-energy battery manufacturer of RC model)
Tel: +86 20 84013376 ; 89812476 Fax: + 86 20 84012396
www.henergy-battery.com



77007.doc



77009.doc

[charles]

you are so professional

what you talk about is professional.I have many questions and learn from you guys.
In my opinion,it is very important to maintain the batteries .And also
sometimes it is dangerous by wrong use and carless setting.
Many people here should heard of Lipo accident happened in U.S.A.
For example,lithum polymer is hot and active after racing,must make it cool when keep it .
To prevent accident,there is a safety sack for Lipo.

[Cklasse]

Noob question.

I just completed my mini titan built and need lipo to do setting now.
What are the advantages for a 3S and 2S lipo? I see that the mAh are the same for both, so should I get 3S or 2S? I only want to fly scale eventually.

[blueangel]

I have a question on ESC.

It has a low voltage cutoff at 4.5V.

That means each Lipo cell should not go below 2.25V, for 7.4V pack right ?

[johndyl]

its a AC/DC charger.. wow dat means the capability is very misleading. spend 200plus to get tis charger in the end cannot charge lipo... waste money already lah..

get those multifunction ones, rather than car ones.......

here's some gd ones

http://www.skyhobbies.com.sg/Lipo_Chargers.htm

[johndyl]

Try to fly today after slow charging back my flat 3s lipo back to 12.6V. The battery has just enough juice for about 1 min of flight time and luckily I land it safely. I think once your lipo go below certain voltage, it might not be worth recharging it. Else you might find that your plane suddenly lost power in the air

ya.. try not to go below 9V for 3s

[LH59]

3s lipo damaged after dropping below 9v

u can try balance charging it with low amps..<0.5A

voltage should go back to >9v quickly.. monitor and if the batt feels warm, if it does, disconnect.

Try to fly today after slow charging back my flat 3s lipo back to 12.6V. The battery has just enough juice for about 1 min of flight time and luckily I land it safely. I think once your lipo go below certain voltage, it might not be worth recharging it. Else you might find that your plane suddenly lost power in the air