Johnnysplits

iTrader: (1)

You would get more life out of your lipo's by having the charger stop at 4.18v/cell instead of completely topping it off. Charge rates of 2 and 3C have no ill effects on good lipo's when using a high quality charger.

woodsweapon

iTrader: (6)

Jimmy O you keep referring to the charger as your possible problem, I have two of the same those chargers and have never had an single issue with them. Lipos take extra care, you don't want to store them more than a day or two discharged or fully charged, a "storage charge" is best which your charger is capable of lipos should be stored at 60-70 percent for any extended period of time

Pulse_

+1 it's all about the charger and cell quality

I use 3,2v lipo cut off and 97% of charge at 3C. I prefer having less lipos but good ones that I can charge fast rather than more that are slow to charge. I never charge my lipos at 100% because it's the balancing that takes time at the end, it's also better for the lipo life.

It's been 3 years I charge at 3C, I puffed one single lipo and it was a cheap one. This running 3 categories and considering my gf races with the same lipos also.

Johnnysplits

iTrader: (1)

There is no problem with keeping a lipo at full charge up to two weeks.

Dave H

Storing at full charge tends to raise the Internal Resistance, and can cause puffing. My experience (mostly the IR) and that of many others.

Dave H

Am I missing something? The posts seem to be saying opposite things as I read them.

nutz4rcyktw

iTrader: (67)

They are not saying the same thing or opposite things. One is referring to how much the lipo is charged to; the second is talking about leaving a charged lipo setting.

Leaving a fully charged or fully discharged lipo set for weeks= trouble

Leaving a lipo plugged in for weeks=dead lipo (in most cases)

Davidka

iTrader: (86)

Depends on what it's plugged into. If the component has a mechanical switch then it makes no difference. I've left a partially charged lipo plugged in and sitting for months and had no issues. If there is a draw in the component then it'd be a different story. Fast way to check is to put an ohm meter to the battery contact of the speed control, with the switch off, it should read +/-0.00.

Dave H

One is suggesting a full charge is somewhat stressful for a lipo. Something we apparently agree on at least to some extent.

The second is suggesting a full charge for a couple weeks is no big deal. (full probably means 4.2V to most, but I doubt if 4.18 for a couple weeks is much better)

Sorry, I view that as being contradictory and opposite.

Johnnysplits

iTrader: (1)

My full charges are at 4.18v/cell and yes, left at that voltage for up to two weeks has no ill effect. Leaving them sit dead for weeks, leaving them plugged in, overcharging, and cold temps are the ticket for killing lipos.

Johnnysplits

iTrader: (1)

Apparently, you are missing something. Read it again. Full charge (4.20v/cell) for two weeks...no problem. Stopping the charge at 4.18v/cell is to [B]make them last longer[B]. Topping off a lipo on every charge cycle will shorten it's life quicker than if you stopped the charge at 4.18v/cell. I didn't contradict anything that I said. Storing for up to two weeks at either voltage level will not do any harm.

theblitzkidd

iTrader: (11)

LIKE IVE STATED BEFORE....i have always stored my lipos at full charge(500mah) and have never had a single problem....so idk what everyone is yapin about that, it could be just the lipos that r dif,,idk!!

Yosh70

iTrader: (17)

Rule of thumb is to NOT let your lipo's rest at full charge. If you boys in Florida want to run the risk of puffing your batteries, then go for it.

theblitzkidd

iTrader: (11)

Great to have it fixed eh

2SlowTC

iTrader: (41)

Racing in our summer heat will puff the best batteries. Storing them high or low never had an issue.