Cerberus

Yeah, with the weight of all four it's coming common carrier. Good news is I'm getting good at taking the batteries in and out so it won't take me long to swap them 😉 BTW - I think there was mention of a service manual for the RY48ZTR75 at one point. Is that available anywhere? My searches have come up dry...

Thanks for the tips! Interstate in the area tested them - only charged me $5 and probably only because I asked how much. All four batteries tested bad and Ryobi is sending me a completely new set. From what I saw, the mower was mfg in 2019 and I bought last year. I'm guessing the time in storage probably trashed the batteries. BTW - the only reason I got to this point was reading this thread. So much good info here. Most appreciated.

So where can you get the batteries tested to see if they are failing? I tried my local Batteries Plus and they said they don't test SLA batteries. Should I be looking at lawn/garden or automotive places?