Lithium batteries

I've had my eye on these Lithium Ion deep cycle batteries from Starkpower. They have dropped below the $1000 mark for 100Ah from around $1299 since I first looked. They also recommend a battery converter that cuts off and does not trickle charge the battery once it is fully charged. Progressive Dynamics carries the PD9100L series that handles that.

The one holdups I see is only a 1 year warranty, and have 2 AGMs that are still in good shape.