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The battery that never needs to be replaced!

Tandem provides an unbeatable combination 

  • A modular design with component replacement makes "replacing a battery", a thing of the past.
  • Low battery lifetime costs:  Less than half the cost of lead acid batteries in hot climates  
  • Weather proof and heat tolerant
  • High capacity and safe LiFePO4 lithium cells, rated at more than 2,000 discharges with 80% capacity remaining
  • Compatible with existing lead acid battery banks and chargers
  • No maintenance.  No water.  No Acid.  Light weight.  Stackable.

Don't miss the great deals on these products.

Lithium Gateway Battery

Perfect for off-grid, grid interactive or general backup purposes.   

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