I found this quite interesting HowStuffWorks "How Lithium-ion Batteries Work"
link takes you to page 2 sorry
link takes you to page 2 sorry
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Earlier this week I delivered a new eZee battery to customer in Hertfordshire for his well travelled and beloved eZee Cadence. I was surprised to find that he still had a working four year old Phylion battery although it was on its last legs.Many of today's better lithium batteries with compound cathodes can last much longer then two years, one member only a day or so ago remarking on his three and a half year old one performing well.
The same with my eZee supplied Phylion test battery that I received mid January 2008, unlabelled but probably made in December 2007. Although it didn't like continuous full throttle extended climbs by two years old on the very high power motor, it continued to work fine on reduced throttle and still has some life.Earlier this week I delivered a new eZee battery to customer in Hertfordshire for his well travelled and beloved eZee Cadence. I was surprised to find that he still had a working four year old Phylion battery although it was on its last legs.
With today's batteries the rate of chemical degradation is very low until the battery starts to be used, so not a severe problem. The batteries Panasonic make for their crank drive units also have a sleep mode which cuts off the BMS when in storage, so they lose no charge and the deterioration then is negliglible.I wonder how old the batteries are when u buy them new, as they start to degrade from day 1 of manufacture ?
The batteries won't come to any harm standing in low temperatures, but charging a battery when it's very cold is not advisable since it will not readily accept a full charge. They need a few hours at room temoerature first, so the battery at least should come indoors. That's not a good situation for bikes with in-frame batteries like the Sparta Ion.my question is what will happen to the battery’s if they are left outside all the year round bearing in mind
that during the last 3 winters we have had some really cold spells with temperatures well below freezing every day for some weeks in February we got down to - 18 I geuss when it snows the scootmobiles will not get used much.
my bike will stay in my hall way,