The RG-46 is a certified dual battery replacement for Piper
Original Equipment. Concorde recombinant gas (RG Series) valve regulated lead
acid (VRLA) batteries for engine starting. Constructed with Concorde’s
proprietary PolyGuard Microporous Polyethylene Separator, shielding the
positive plates against shorting, shock or vibration. No other manufacturer
offers this dual layer insulation protection feature.