I've got yet another charger suggestion. I happen to have a Nyko charger for Sony PS3 controllers, designed to charge any two controllers not attached to a PS3. It has two short mini-USB-terminated cables running from a "wall-wart" box.
I tried it on a lark and it works great for two 505's. It says it delivers 800 mA at 5 V so it is probably a fast charger too!
|