There are two types of electric vehicle batteries, AGM and GEL. Both are suitable for an electric golf trolley and golf carts, it just depends on what your needs are. An AGM gets up to working capacity quickly and has a long cycle life. The bigger the battery the more power and playtime you will have. If you play two rounds in one day, or if your course is particularly long or hilly, then you will need a bigger battery or an EX increased capacity battery. All Haze electric vehicle batteries must be charged after use and left to fully charge. Leaving a battery flat will result in loss of capacity.