need advise for daiwa 500 electric reel battery

[chenju]

I just bought a seaborg 500J . the instruction said use 12V chargeable battery. Can anyone recommend what battery i should buy. i want to use the reel to fish for offshore seabass and cod. the water usually 300 feet and fishing time 6 to 8 hours. Anyone used this model "12V 12Ah F2 Battery For Daiwa 500 Electric Fishing Reel" ? how long the 12V ,12A battery can last? Do i need to buy a battery box or bag ?

Thank you in advance!

[RBC67]

Contact the Reel Seat ( sight sponsor) they are the service center and can answer your questions