Guys,
I just purchased four new Thunder Power 3900 mah, 4S1P Pro Lite packs from a reputable company that has a good turnover of inventory. TP has been advertising a G4 designation as the latest technology that allows up to 4C charge rate. My question is these new packs look just like the packs I bought last year. I don't see any new markings on the packaging. The price is in line with the price that TP offers so it is not a sale price item. Anyone have any of the G4 series backs that identifies it as such, what should we look for?

Best,            DennisT