Laptop unused for three months

Brow

Im off to america for the summer and not bringing my laptop. I was just wondering what state i should leave the battery in: fully charged, uncharged, half and half, removed, unremoved etc. Doesnt make mention of it in the manual and was curious. Prompt replies are greatly appreciated!

Gurgle

Fully discharged and removed from the laptop.
Not for any reason that I can logically explain, but *seems* like the best plan.

-edit- here's why: because thats the way it arrives when you buy the laptop

cormie

I remember reading on some power tools (power? they were bought in Aldi so not sure how much power:pac:) but it said to leave them with a full battery if not used for long periods of time. I think it was full now...

humbert

yeah, I've read that when leaving a lithium ion battery for long periods it's best to leave them with a medium charge and somewhere cool and dry.

the_syco

If the place is too cold, it'll drain your battery in about 2 weeks (even if the laptop is off).

humbert

here's a similar article to the one I read. Summary at the bottom.

Capt'n Midnight

don't forget to put the battery in a freezer bag to keep it waterproof if you keep it in the fridge.

Overheal

My dad just bought a Roomba the other day and the leaflet said for long term storage the battery should be removed and stored in a cool, dry place (a drawer is fine) with a Full Charge. And I mean if they can make a robot to clean my floor and other robots to detect snipers for the military those guys must be smart or something

kaimera

Bah, where was this thread when I left.

Laptop sitting in a laptop bag with battery in. She'll be fine..

Overheal

why you wouldnt bring your laptop abroad is beyond me: they do work everywhere you know.

kaimera

Overheal wrote: »

why you wouldnt bring your laptop abroad is beyond me: they do work everywhere you know.

Some people like to get away from it all?

Overheal

kaimera wrote: »

Some people like to get away from it all?

pfft :pac:

yet here you are, posting away...

Soundman

Gurgle wrote: »

Fully discharged and removed from the laptop.
Not for any reason that I can logically explain, but *seems* like the best plan.

-edit- here's why: because thats the way it arrives when you buy the laptop

Not necessarily true. Both my laptops arrived with almost three quarter full batteries

Overheal

manufacturers must store their batteries with a full charge which would explain the partial discharge. Li io batteries lose their charge gradually over time (according to roomba's manual) at a rate of about 1% every day(or week i cant recall) or so.

kaimera

Overheal wrote: »

pfft :pac:

yet here you are, posting away...

work laptop.

I left my personal one at hoem :rolleyes:

Conor108

Overheal wrote: »

Li io batteries lose their charge gradually over time (according to roomba's manual) at a rate of about 1% every day(or week i cant recall) or so.

Must be every week. 100 days until you have to replace a battery would be shiz.

Overheal

Till you have to reCHARGE*

zilog_jones

Overheal wrote: »

manufacturers must store their batteries with a full charge

They don't. Well, Dell don't anyway. They are charged when in extended extended testing, i.e. after they are assembled and not long before they're sent off. I don't know what manufacturers who don't build to order do though.

That website linked above speaks the truth - for storage it's better to leave them charged at about 30-40% and at as low a temperature as possible (not below manufacturer recommended temps though).

I remember reading on some power tools (power? they were bought in Aldi so not sure how much power) but it said to leave them with a full battery if not used for long periods of time. I think it was full now...

Power tools use NiCd or Ni-MH batteries - completely different technologies than Li-ion with very different characteristics. For example, with Li-ion batteries there's no need to fully discharge them ever (it's actually bad for them), and you can recharge them as often as you like - completely different to what's recommended with NiCd and Ni-MH batteries.

My dad just bought a Roomba the other day and...

Again, Ni-MH battery, so none of that is applicable to Li-ion batteries.

Capt'n Midnight

Memory effect only applies to NiCAD / NiMH
and only if there are repeated charge/discharge cycles of the same depth

it does not affect batteries where there are different depths of discharge including the occasional full discharge

Not really something to worry about unless you have a satellite whose solar panels regularly get eclipsed.