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Storage voltage for space cell


#1

Hey guys its now winter in minnesota so using my esk8 is not really an option right now. I saw in the thread on using lipos about there being a storage voltage. What is the percent that the space cell readout should say for proper storage?

Thanks, Hans


#2

Lithium ion batteries are stored best half full, as far as I know. And the SpaceCell is made with 18650 cells which are lithium ion …


#3

3.6v is where you want to be storing individual 18650 cells. Depending on the number of series cells (3.6v x # of series cells) should provide you a nominal voltage level for storage.

Ex: 10s battery should be stored at 36v


#4

Lipo cells are supposed to be set at half capacity like @jeroenimo mentioned. Lipo’s are most chemically stable at half capacity. I usually store mine at between 3.8 and 3.9 volts per cell. That’s usually where they’re at when you buy from a dealer. If you’re not going to use them for a couple days is good to discharge them to half capacity. Never leave them fully charged for long periods of time. The Spacecell uses Li-on cells, which are a little different, but I’m sure the same rules apply.


#5

Am i crazy or does nominal voltage come into play here?


#6

Nominal is what you store at, so yes. It does come into play.


#7

if the nominal voltage of each cell in your battery is 3.6 then @SubCreative has the formula to use posted there. However, there are some 18650/26650 that have a nominal voltage of 3.7 so if anybody wasnt aware of this and was building a battery pack, check yo self befoh u rizzity rek yoself.