OK. So if I only race/practice once a week what is the best way to store my lipos? I have traditionally kept them fully charged. I use them on the weekend and then put them away in a lipo bag for the week fully charged.

Is this bad?

What should I do?

search

Sounds like you are an expert. Please share with me the thread that answers my exact question. If you can't find it then don't bother posting in my thread. Like I didn't search before posting.

Storing them any time at all fully charged is supposed to raise the IR and will degrade performance over time. I charge mine to storage voltage after getting home and leave them that way until I get ready to use them and then charge them. The other thing I've seen talked about is not charging to full 4.2v/cell, but 4.1v/cell - that doesn't seem to cause the prob attributed to time at full voltage.

Thanks for the answer now let me follow-up with another (stupid) question. How do you charge to "storage voltage"? Let say I am charging a 2S 5000Mah lipo. What settings on my charger would I use and to how many volts would I charge to?

did you really search?
http://www.rctech.net/forum/electric...t-storage.html
http://www.rctech.net/forum/radio-el...o-storage.html
http://www.rctech.net/forum/electric...o-storage.html
http://www.rctech.net/forum/electric...o-storage.html
http://www.rctech.net/forum/radio-el...o-storage.html
http://www.rctech.net/forum/radio-el...o-storage.html

how do we know what charger you have? why don't you read the manual on your charger to see if it has a storage function?

I just run my packs from a full charge and make sure they are between 3.7 to 3.9 volts before storage.

swarb,

Please stay out of my thread. You are an a$$. All these have lipo storage in the title and not one answer my question about 1 week between uses. You are worthless to my thread so I would appreciate it if you would just stay out and go be an a$$ in someone else's thread.

Moderator- sorry for the language but the guy is an idiot.

Lipo capable chargers typically have a lipo storage mode. This mode determines if the lipo needs to be charged to storage or discharged to storage. Typical storage voltage is 3.85v/cell - this is a resting voltage. Quoted storage voltage ranges from 3.78-3.92v/cell (Hyperions recommendation) so its not exact.

Duster. thanks for the help. Didn't realize the storage function would know to charge or discharge. Thought it would only charge and since I finish at the track with them charged, didn't know that would work. I will give that a go.

Check your charger manual - older chargers couldn't take eh heat from discharging and they would only charge to storage. If you have a newer charger, it should take care of storage from either direction.

Thanks I will. It is a 1 yr old Bantam charger BC-6 I think it should.

Hi Todd, long time!

Most lipo instructions I've read tell you to store lipos around 50% charge. I know this is not very scientific, but this is what I do: After my last practice or race, I simply store the battery and car.

I know that a race will take about 1700-2000 mah out of my battery so for a 5000 mah so that's roughly 40%. I'll leave the battery that way until the next practice or race, either charging the night before or day of. I've never had a problem with this method.

Hope it helps!

This is why -

4.20v = 100% or fully charged
4.03v = 76%
3.86v = 52% (long term storage voltage)
3.83v = 42%
3.79v = 30%
3.75v = 20% (minimum discharge volts for longevity)
3.70v = 11% (this and below shorten battery life)


Lot of chargers have gone away from %'age as basis of storage mode - his Bantam charger is set for a storage voltage of 3.85v/cell.