From Honda service bulletin 89-003, posted recently on this forum (can't recall where)
"Maintaining batteries in unsold vehicles is the dealership’s responsibility, and is an important part of ensuring a battery’s operating life. If a new battery is not properly maintained and is allowed to go dead, it greatly affects the battery’s long-term life, which can lead to unnecessary battery replacement and customer complaints. If a battery sits in a discharged state in hot weather (above 80°F), the electrolyte is closer to water. This water permanently sulfates the internal plates similar to oxidation and prevents charging and discharging. In cold temperatures, a discharged battery’s electrolyte may freeze which can cause damage to the internal plates and prevent starting. Therefore, if you do not properly maintain a battery according to the scheduled inspection and charging intervals, the customer may receive a damaged battery or a battery with a low state-of-charge."
My guess is that if you are seeing 2 bars on the battery level and the car has been driven in HV mode here and there you are fine, but I am new to this so don't take my word for it. Ours was delivered without a charge as well. They didn't even bother to rinse off the pollen... (Boch Honda west in Westford).