AGM Batteries vs. Wet Battery Comparison

Absorbed Glass Mat (AGM) Wet Cell
Maintenance Very Low Moderate
Overcharge Tolerance Minimal Some
Recharge Time Fast Average
Temperature Tolerance Better Okay
Lifetime Better Average
Gassing Very Little Some
Initial Cost Higher Lower

Maximizing Your Battery’s Life

AGM Battery Care

  • Avoid allowing charge to completely empty.
  • Unplug when finished charging.
  • Even when not in use, batteries should be stored at full charge (or near full charge) to maximize life.
  • For long-term battery storage, recharge every 6 to 12 months.

Wet Battery Care

  • Regularly check contact plates – add distilled or de-ionized water to cover the plates if the water is low. Do not overfill.
  • Avoid freezing temperatures. Do not charge a frozen battery.
  • Avoid charging in high temperature areas.
  • Charge in a well-ventilated area. (Wet cell batteries produce some hydrogen gas.)
  • For long-term battery storage, recharge every 6 months.