Advantages and disadvantages

Advanced EV Dry Cell Advantages:

    * Totally maintenance-free
    * Air transportable
    * Spill proof / leak proof
    * No corrosion
    * Superior deep cycle life
    * Excellent for Long Duration Back-up power and Renewable Energy applications
    * Excellent for UPS/Telecom and High Rate applications
    * Installs upright or on side (side installation may lose about 10% capacity)
    * Very low to no gassing (unless overcharged)
    * Compatible with sensitive electronic equipment
    * Superior shelf life
    * Superior recharge ability (from 0% to 90% in 4 hours)
    * Superior recharge ability (from 0% to 100% in 6 hours)
    * No recharge current limitation @ 14.4 volts
    * Rugged and vibration-resistant
    * Very safe at sea with no chlorine gas in bilge (due to sulfuric acid and salt water mixing)
    * Operates in wet environments…even under 30 feet of water
    * Will not freeze to –20°F/-30°C (if fully charged)
    * Lowest cost-per-month (cost / months of life)
    * Lowest cost-per-cycle (cost / life cycles) – Up to 20% more cycles than standard deep cycle absorbed electrolyte batteries when discharged capacity exceeds 80%.
    * Up to 10 times the cycling ability of standard AGM when discharged capacity exceeds 50%
    * Up to 5 times the cycling ability of standard AGM when discharged capacity exceeds 80%

Advanced EV Dry Cell Disadvantages:

    * Higher initial cost
    * Heavier weight
    * Water cannot be replaced if continually overcharged
    * Typically can not be used to replace flooded types without adjusting or replacing the applications existing chargers.
    * Automatic temperature-sensing, voltage-regulated chargers must be used and
    * Charge voltage must be limited (14.4 to 14.7 volts maximum at 25°C/77°F

Gelled Electrolyte Advantages:

    * Totally maintenance-free
    * Air transportable
    * Spill proof / leak proof
    * No corrosion
    * Superior deep cycle life
    * Installs upright or on side (side installation may lose about 10% capacity)
    * Very low to no gassing (unless overcharged)
    * Compatible with sensitive electronic equipment
    * Superior shelf life
    * Superior recharge ability (from 0% to 90% in 4 hours)
    * Superior recharge ability (from 0% to 100% in 6 hours)
    * No recharge current limitation @ 13.8 volts
    * Rugged and vibration-resistant
    * Very safe at sea with no chlorine gas in bilge (due to sulfuric acid and salt water mixing)
    * Operates in wet environments…even under 30 feet of water
    * Will not freeze to –20°F/-30°C (if fully charged)
    * Low cost-per-month (cost / months of life)
    * Low cost-per-cycle (cost / life cycles) – Up to 15% more cycles than standard deep cycle absorbed electrolyte batteries when discharged capacity exceeds 80%.
    * Up to 3 times the cycling ability of standard AGM when discharged capacity exceeds 50%
    * Up to 4 times the cycling ability of standard AGM when discharged capacity exceeds 80%

Gelled Electrolyte Disadvantages:

    * Higher initial cost
    * Heavier weight
    * Water cannot be replaced if continually overcharged
    * Typically can not be used to replace flooded or AGM types without adjusting or replacing the applications existing chargers.
    * Automatic temperature-sensing, voltage-regulated chargers must be used and
    * Charge voltage must be limited (14.2 to 14.5 volts maximum at 25°C/77°F

Absorbed Electrolyte Advantages:

    * Totally maintenance-free
    * Air transportable
    * Spill proof / leak proof
    * No corrosion
    * Installs upright or on side
    * Lower cost than gel cell batteries
    * Compatible with sensitive electronic equipment
    * Very low to no gassing (unless overcharged)
    * Excellent for starting and stationary applications
    * Superior for shorter duration/higher rate discharges
    * Superior under extreme cold conditions when fully charged
    * Superior shelf life
    * Superior recharge ability (from 0% to 90% in 4 hours)
    * Superior recharge ability (from 0% to 100% in 6 hours)
    * Rugged and vibration-resistant
    * Very safe at sea with no chlorine gas in bilge (due to sulfuric acid and salt water mixing)
    * Operates in wet environments…even under water

Absorbed Electrolyte Disadvantages:

    * Shorter cycle life than gel in very deep cycle applications
    * Automatic temperature-sensing, voltage-regulated chargers must be used
    * Water cannot be replaced if continually overcharged
    * Charge voltage must be limited (14.4 to 14.7 volts maximum at 25°C/77°F)

Flooded Electrolyte Advantages:

    * Lowest initial cost
    * Good for higher current applications
    * Water can be added (if accessible)
    * Excellent for starting applications
    * More tolerant of improper recharge voltages
    * Certain designs are good for deep cycle applications
    * Replacements readily available
    * Good under extreme cold conditions when fully charged

Flooded Electrolyte Disadvantages:

    * Spill able
    * Operates upright only
    * Shorter shelf life
    * Fewer shipping options
    * Cannot be installed near sensitive electronic equipment
    * Watering will be required (if accessible)
    * Higher long term cost per cycle when labor and material costs are calculated
    * Requires high levels of maintenance and safety practices.