Interested in the larger weight model. DOes anyone know if it has a cord to plug in to charge battery or is it a large charger unit (like a car battery)? Rented one from Walker and it was a cumbersome battery that I had to charge in the room. Rented one from Randy's that plugged right into a standard outlet. Much more convenient. Willing to try BV for convenience sake but want a direct plug to charge. Tx