The high-performance Optima Yellow Top is one of the only true dual-purpose starting/deep cycle batteries available, combining deep cycle charging and high cranking power into one AGM battery.
Its spiral design provides lower internal resistance for up to twice the cycling capacity (recharge ability), as well as faster recharging and higher cranking power than a traditional battery.

The Yellow Top is ideal for powering heavy electrical loads including boats, trucks with winches, cars with high-demand audio systems, commercial trucks and other demanding vehicle accessories and electronics.

Spill proof - no excess liquid; can be operated in any position without the risk of leakage
Never needs water; sealed - so no corrosion can form on the posts, connectors, or cables
Longer service life - twice that of a normal starting battery, making it more economical
Unaffected by vibrations that destroy ordinary batteries
34U Dual posts: SAE automotive post style and GM style side terminals 3/8"-16 UNC-2B
3-year free replacement warranty; 1-2 years commercial use (call for specifics)
Overall dimensions (including terminals): 10"L x 6.9"W x 7.8"H