Ok, Thanks.
I guess I'll just wait untill the stock battery won't meet my expectations anymore. My H320 currently gets around 10 hours of uptime on average running rockbox, I have an uptime record of over 17 hours (which was just 3 weeks ago)!
I guess I'm just very lucky, but the 24 hours or more uptime of a 2200mAh battery is very attractive too
