I just bought an EG4 6000XP. A local guy that sells solar equipment as a side business has 2: EG4 LifePower4 Version 1 Batteries. They are new in the box. He’s asking $1000 each, cash without tax. This would result in a savings of about $400 per battery versus buying 2 new EG4 LifePower4 Version 2 Batteries. Wondering if this is really worth it and if there are concerns about the batteries sitting around for a couple years.