My Mom bought a used golf cart in 2008 for my Dad -- after he started Dialysis. He passed away but my Mom uses this to get around in the yard, check the mail, visit my sister next door. Anyway, the batteries may need replacing. Do these have to be Golf Cart batteries or will a deep cyle battery or another kind work just as well? It is a used 2004 MODEL: TXTPDS and the batteries are TROJAN T-105 MILEAGE. Thank you for any and all advice. Clay and Lisa