What is a agm battery?

AGM Battery Information

AGM (Absorbent Glass Mat) batteries are a type of lead-acid battery known for their superior performance and versatility compared to traditional flooded lead-acid batteries. Here's a breakdown:

• Technology: AGM batteries use a fiberglass mat saturated with electrolyte to separate the lead plates. This design offers several advantages.

• Advantages:

  • Spill-proof: Since the electrolyte is absorbed in the mat, there's no free-flowing liquid, making them spill-proof and safer to use in various orientations.
  • Maintenance-free: AGM batteries are typically maintenance-free, meaning you don't need to add water.
  • Vibration Resistance: The construction makes them highly resistant to vibration, suitable for applications like motorcycles and RVs.
  • Low Self-Discharge: They have a low self-discharge rate, meaning they retain charge for longer periods when not in use.
  • Faster Charging: AGM batteries can often accept a higher charge current than flooded batteries, resulting in faster charging times.
  • Deep Cycle Capability: Many AGM batteries are designed for deep cycle applications, meaning they can withstand repeated discharging and recharging cycles.

• Applications: AGM batteries are widely used in:

  • Automotive starting batteries (especially for vehicles with start-stop systems)
  • Motorcycles
  • RVs and campers
  • Marine applications
  • Uninterruptible Power Supplies (UPS)
  • Solar power systems
  • Electric wheelchairs and scooters

• Considerations:

  • Cost: AGM batteries are generally more expensive than flooded lead-acid batteries.
  • Charging Requirements: They require a specific charging profile, so using the correct charger is crucial to avoid damage.
  • Heat Sensitivity: While more robust than flooded batteries, extreme heat can still shorten their lifespan.

• Lifespan: With proper care and charging, AGM batteries can last for several years, often longer than traditional flooded batteries. The actual lifespan depends on factors such as the depth of discharge, operating temperature, and charging practices.