What are the advantages and disadvantages of both types of sealed valve regulated batteries

Gel Battery Advantages:

• Totally maintenance free

• Air transportable

• No corrosion

• Spill proof/leak proof

• Installs upright or on its side

• Superior deep cycle life

• Very low to no gassing (unless overcharged)

• Compatible with sensitive electronic equipment

• Superior shelf life

• Rugged and vibration resistant

• Very safe at sea with no chlorine gas in bulge (due to sulfuric acid and salt water mixing)

• Will not freeze to -20°F

• Lowest cost per month (cost / months of life)

• Lowest cost per cycle (cost/ life cycles)

Gel Battery Disadvantages:

• Higher initial cost

• Heavier weight

• Water can not be replaced if continually overcharged

• Automatic temperature sensing, voltage- regulated chargers must be used

• Charge voltage must be limited to extend life