So far, the wireless signal of my two G30s work fantastic. Here are some tips to protect it and get the most Eco-friendly workable battery life out of it. Truth is, the design of the G30 is not very robust. One drop and your probably done. The door will break off or the belt clip with snap.
1. Get a Neotech neoprene wireless pouch size small - it keeps the unit protected, keeps the battery door snug, Velcro straps hold the pouch to your strap. I put the G30 in the pouch output side down - there is a small opening just big enough for your output cable and you can squeeze your finger in the top part to turn the unit on and off.
2. Get an 8 pack of Sanyo enloop pro batteries (2500mAh) and a charger. They are more expensive but hold a charge really well and can be charged 500 times. I recharge after every gig and carry a few spares in my gig bag. No issues so far. I hated throwing out batteries after 7/8 hours - not a sustainable solution. The enloops are great and shortly pay for themselves many times over as well and your Green Party consciousness can rest easier : )