The Cell Spy Plus is the next generation of our famous Cell Spy. It makes checking the voltage of your lipo packs easier than ever, especially for guys with larger packs. It provides a digital read-out that can show up to 6 cell voltages in rotation. With 2.5mm pin spacing, it works with 95% of the lipos on the market. Be sure to pick up our TP2UB adapter for your Thunder Power and Flight Power batteries!