There are three forms of batteries.
1. Liquid battery or hybrid battery
2. Dry battery
3. Water based batteries.
In today the best battery is dry battery having zero maintenance expenses. No need to check water daily because it consist on gel. The water based batteries are not reliable in the sense that water level should be watched daily and also some maintenance of terminals required. Dry battery can be used for years but water based batteries have only 6 months warranty. Although dry battery is costly but it has latest technology and more reliable. So I recommend dry battery.
