eBike in vacation home, what to do with charging?

glenna

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I am planning on buying an e-bike (battery is NOT removable) for a location that I am not living at all the time.
I will be away for 3-4 months at a time.
Other than having a friend periodically charge my battery, does anyone know of another solution?

Thanks.
 

HumanPerson

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If you're gonna be gone that long from the residence and ebike i'd set it at around 45% charge then
have your friend just check on your place.

After you get back to said residence just fully charge it up and let the cells balance.
Then you're good to go :)

Hope this helps.

Welcome to our humble home, by the way :cool:


HP
 

Thylacine

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Use a (some) battery tender(s) and maybe a pair or more of battery equalizers:



oh... and get out your wire cutters and put on your thinking cap..

This article may yield insight:

 

Thylacine

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Hi Glenna. Does the home the bike is at have internet? If so, a remote controlled outlet may be adequate if the battery charging dongle is smart enough to just do its job without any button pushing...

'HumanPerson' aired a decent suggestion NOT to fully charge said cells and/or battery pack to 100%. Many and several variables can assidentally cause overcharging which can stress cells and decrease service life, among other factors..
 

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Thylacine

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Black100 makes a good point. Avoid the hassle and buy an eBike with a removable battery.
 

"A"

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As long as your battery is kept above 50 degree F, you should be fine for 3-4 months between charge.
The heat (above 90 degree F) doesn't bother the batteries for storage, but the cold really shorten the battery life.
 

Hoggdoc

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If you're gonna be gone that long from the residence and ebike i'd set it at around 45% charge then
have your friend just check on your place.

After you get back to said residence just fully charge it up and let the cells balance.
Then you're good to go :)

Hope this helps.

Welcome to our humble home, by the way :cool:


HP
I agree with most of this accept I would store battery at 60%. This all assumes we are talking about Lithium batteries. If it a lead acid battery get a quality "Battery Tender" and leave it plugged in all the time.
 

CloneWerks

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SOP for Li-Ion and Li-Po battery packs
  1. Do your long-term storage at or near 50% charge.
  2. Check the charge after about 60 days (these types have a small self-discharge rate)
  3. Do NOT charge a cold or very hot battery, try to bring it to "shirt-sleeve" temperatures first
 

CloneWerks

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Hi Glenna. Does the home the bike is at have internet? If so, a remote controlled outlet may be adequate if the battery charging dongle is smart enough to just do its job without any button pushing...

'HumanPerson' aired a decent suggestion NOT to fully charge said cells and/or battery pack to 100%. Many and several variables can assidentally cause overcharging which can stress cells and decrease service life, among other factors..
Wow, that remote plug is even fancier than the thing I use to ensure that my charger never goes longer than 5 hrs.
 

HumanPerson

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Solar charger. Problem solved... First Post
Welcome to our humble home :cool:

Boost charge controller? I use MPPT with 4 100w solar panels. I set at 4 amps and harvest free range wattage from the sun at least once per month.

Good stuff right there the Sun is :)
 

Rockbike

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As long as your battery is kept above 50 degree F, you should be fine for 3-4 months between charge.
The heat (above 90 degree F) doesn't bother the batteries for storage, but the cold really shorten the battery life.
This is incorrect. Lithium ion batteries store even better in the cold, as long as it's above freezing. It's best to warm them to at least 60F before discharging them or 70-80F before charging but these are merely optimum temperatures and higher or lower will not ruin them, merely shorten their life a little faster.

At 35F, a lithium ion battery charged to 60% can be safely stored for a year or more if there is no vampire drain on it.
 
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