Battery Tender 4 Amp Selectable Charger


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Finally, a fully automatic charger that works on any 12 volt lithium, lead acid, AGM or GEL battery! These Battery Tender® chargers are recommended for use with all Anti-Gravity 12 volt small case lithium batteries.

The Battery Tender® 4 Amp charger has selectable 12 or 6 volt options as well as battery type selection, covering you for all charging options.  It's lightweight, compact, and fully automatic; very easy to use, especially in small spaces. Keep your battery fully charged so that it's ready to go when you are!


  • Model: BTC4000
  • Output: 12V or 6V switchable @ 4A
  • Suitable for lead acid, AGM, gel and lithium (LiFePO4) type batteries
  • Switch between 6V and 12V output
  • Switch between AGM/Standard or GEL/Lithium Iron
  • Spark proof even when output leads touch
  • Microprocessor controlled to assure correct level of output at all times
  • ISM™ (Infinite Sequential Monitoring) Charge Program adapts to the batteries needs every second of the fully automatic 4-step charge process (qualification, bulk charge, absorption, float)
  • Connect and forget management
  • Reverse Polarity Protection - no charge or battery damage
  • State of charge LED indicator
  • Dimensions: 170mm x 95mm x 50mm (charger only)


  • Battery charger unit
  • Quick Connect Ring Terminal Harness
  • Alligator Clip Harness
  • 5 Year Warranty


Note: These chargers are required to maintain your Anti-Gravity battery warranty.

Brand Battery Tender

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