is it a marine starting battery or a deep cyckle . i use deep cyckle for all my boat needs . i did git a deal on 3 marine starting batteries . i use them for starting onley . @ $35.00 a pice i couldn`t turn them down .outbord charging system don`t put out but 8 amps . some of the newer ones might put out more . my pontoon has 4 batteries . one is a spare .one for cranking 1 for acc. and one up frunt for triling motor and troling depth finder . when the battery fgits week the depth finder will cut off . with a troling motor at high speed will draw a lot of current . i have never had a good battery to caus ethe probablem .
retired and now i will always fish