Are we looking at Interstate Batteries on the shelf? I went beck and quickly scanned this thread and did not see the voltage your battery bank was going to be. So, will you fill us in, and add what battery size and capacity you're using?, please.... I really want to know what you plan to power with this too.
If I understand correctly, batteries need continuous exercise, so you must be planning to use the generated power on something as you go along, not just store it up for an outage.
Anyway, the work may not be the fastest on the planet, but the quality looks just fine.