LiPo Issues

[megaherz]

Ok so i have a Dynamite 4200 2s LiPo Hardcase. I have had it for about 8 months and i always use a cutoff with my vehicles. In fact i dont even run the battery down to the cut-off ill take it off when i feel it's been running awhile.

I am using a Dynamite passport AC/DC charger and the battery will no longer take a charge. My other batteries work on the charger still so i was able to rule that out as being the issue. I haven't hurt the battery in anyway and it is always balanced when i charge. So my question is, Is there like an average life of LiPo batteries? I know they are measured by cycles rather than months because the amount of use varies but is this normal?.

 

[bcaz808]

About how many cycles have you run through it? I run my batteries down till the ~9v cutoff every time because every charge is a cycle even if the batteries half full.

 

[megaherz]

Ive prolly put 100 cycles or so through it, It was my main battery i use for the track and i have owned it the longest. I usually pull it off after about 45 min at the track. I dont have a volt meter so im not sure what its getting down too but running it down to the cut-off on he ESC has always made me nervous.

 

[bcaz808]

For cheap lipos around 100 cycles is normal. Higher end may get up to around 300. How many amps you charge it at also has a big effect on how many cycles you get out of your batteries. As far as cutoff it's 3v per cell for lipo. As long as your cutoff is decent I would run it till it cuts out. Try borrowing a multimeter from a friend and test it.

 

[megaherz]

Ahhh.. Alright, I usually charge it at 4 amps so i guess ive gotten my use out of it at this point. Thanks for the help "thumbsup"

 

[bcaz808]

No Problem. If you plan on buying another cheap lipo check out hobbypartz gens ace or sky. Right now I'm running one of there sky lipo's 3s 2650mah 20c discharge for only $16 after a 10% off coupon I found through google. So far I have about 40 cycles through it and it's stillgoing strong."thumbsup"

 

[megaherz]

Thx for the suggestion but ive actually had a couple of those puff up on me already which is why i bought the dynamite haha. I think i might go with a maxamps they seem a little pricey but if i get 300 cycles out of it it will be worth the 100 bucks.