Deltran smart lithium lightweight battery
 

Extremely lightweight. Has top posts for miata style terminals. 12v 5AH 300CCA. Part #BTL14A300CW
also comes with charger/tender made for lithium batteries.
I bought this last summer but never got around to making a tie down so I never used it.
$125 shipped to lower 48
PM for paypal address
https://cimg8.ibsrv.net/gimg/www.mia...655b233ef0.jpg