Update (for anyone interested):
After my May 7 post (#138) , I immediately emailed Lauter to complain about the battery. He promised to send a replacement that works as advertised, but after a few follow up emails and 1 month later still no battery in sight.
And based on what I've since found out, I suspect the battery I have is not "defective" at all but actually represents the typical performance:
Apparently its "Max 1700mAh" (printed on the sticker), not "1800mAh" as claimed by Lauter in post #117.
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But as someone has pointed out in a previous post, 7210 Nokias are using BLD-3 batteries which are rated at only 760mAh.
http://www.nokiausa.com/nokia_accessories/...2224,10,00.htmlAn actual capacity of 760mAh(or slightly less) would match the results I got in my tests.
And searching ebay.de for "maxcell" batteries:
http://search.ebay.de/maxcell_W0QQfkrZ1QQfromZR8Practically all these different maxcell batteries have the same "1700 mAh" printed rating regardless of their physical sizes or phone models. I think we can make some obvious assumptions here.
The "raw" battery is suspect, and the seller is not reliable, so my advice to potential buyers is to
look elsewhere for a replacement battery. Even if you are willing to accept the 760 mAh capacity, what practical use is a battery that can barely last a half-day of normal usage on your C860 Zaurus?
Put your 35 Euros to better use and go buy a reputable brand, eg this Mugen Power battery:
http://www.lionbattery.com/description.php?noproduit=56Its not the slim type, but at least you know you're getting the correct capacity.
Alternatively search in Amazon.com, from time to time you may find sellers for the slim battery:
http://www.amazon.com/gp/product/B0000645V...glance&n=172282And for people who are happy to pay 35 Euros for a 760mAh battery, I'll sell you mine at half price