Thread: Advice on making the most of Nit's batteries
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TA-t3 is offline TA-t3
2008-04-30 , 11:50
Posts: 3,841 | Thanked: 1,079 times | Joined on Nov 2006
#7
Originally Posted by brecklundin View Post
It was always my understanding that LiIon of all sorts do work best when "topped off", as mentioned vs. repeated full discharges. Even laptop batteries last longer and retain more capacity (I think?) when used in this fashion.
For laptops there's a complication in that they're much hotter inside, and Li-Ion batteries don't like heat when they're 100% charged up - it destroys the lifetime of the battery. Laptops that always stay on the mains tend to end up with useless batteries after only a year or so. Certainly that's happened with every single laptop here at work, ever. The only laptops that still have useable batteries are those that either are mostly on the road, or are taken care of (i.e. not staying on the mains all the time). There are some (very few though) laptops on the market which can be set to not charge to more than 80% while on the mains, if you want a 100% charge before you go on the read you have to tell it so. This feature is meant to handle this problem with 100% charge and high temperature.

Question about LiPoly batteries. Are they like their laptop counter parts in that when stored for extended periods it's best to leave them discharged to around 40%-ish? I ask because if a person has two batteries or more for theit NIT it would help to know what sort of rotation cycle will get the best useful lifespan (not runtime) from the batteries.
That's my understanding, from reading up on batteryuniversity.com. I have a few extra batteries for my mobile devices, I charge them to 40-50% and I keep them at 4-6 degrees C in the fridge.
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