Triad 48V Rechargeable Lithium-ion Battery

I received my scooter and both batteries were dead. I charged them both and still dead. I charged overnight and still nothing, what's next? I need help

Bought a Triad scooter tried to charge the batteries and neither one would charge, I looked up on the website they said they were sold out, what’s a person to do, no one will answer the phone or email you back, anybody have any ideas!!!!

Brought the scooter and it came both batteries went 8 hrs with charger and neither
worked. What do I do?

Fast shipped! Got it in 2 days!

I love these batteries because they're easy to charge and switch on the go. Bought the extra one to have on me just in case.