Hey guys! I also progressed some with these usb battery charger project. Namely I bought three products:
1. GP InstantPower: http://www.alza.cz/mobilni-nabijecka-gp-instantpower-d94738.htm (it seems the fabrication has been stopped, so only surplus items are available on the market) 2. PowerGuy (original chinese manufacturer: sznjkj.com) http://sznjkj.com/cpintroduce.asp?cpID=37 I dunno chinese at all, but on that page it looks very similar to the "PowerGuy" M-100 product: http://www.powerguy.de/produkte/1/7/powerguy-m-100/ > It has a very lousy USB plug which finally broke the USB connector in my > Freerunner: I agree, the connector is not really good. In fact, we need to plug two rigid connector together, so it is not surprise, that brokes the freerunner's connector. (it is about 3-4cm rigid thing coming out of the phone). 3. 3700mAh Li-Ion battery charger, "K005": http://sznjkj.com/cpintroduce.asp?cpID=90 > They claim to deliver 240mA, but my feeling was rather 100mA. I made some tests. With the PowerGuy charger from a GP alkaline battery (1.5V) it charger more then 5hours long, and while the phone was in suspend at the whole time, it only charged 21 percent. I also made some tests with the Li-Ion battery charger: It charges about 40% to the phone. I suspect some problem here. Maybe I cant charge it via Freerunner's charger? (1000mAh) But it charges faster then the PowerGuy. Dunno why is it, because I didnt set anything on the phone (and the default should be 100mA). I will test more the Li-Ion battery charger, maybe I should recharge with different wall-charger, and report back more. Btw, with a 3.7V 3500mAh battery (K005 type), how many times could I recharge the phone? More then 2 full charges? Because something is clearly wrong with the charger. Maybe I will build the MintyBoost circuitry into GP charger. (the GP charger is really small in reality.). Best regards, Laszlo _______________________________________________ Openmoko community mailing list [email protected] http://lists.openmoko.org/mailman/listinfo/community
