Jan 19, 2013 I worked on adding a firewall mounted battery box (9 Hours). Vans sales a firewall battery mount kit for the PC680 battery so I decided to buy it. It was interesting reading the plans for the battery box versus the plans for the RV10, very different! After drilling many holes in the battery box to decrease the weight being added I moved to creating a support structure for the firewall. I used to angle aluminum pieces with various mounting holes and nut plates to attach the battery box and to attach the support structure to the firewall. I again drilled lightning holes in the angle aluminum to decrease the weight but maintain structural integrity. I then used bio-therm so seal the holes thru the firewall.
