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The Battery Tender Lithium 800 Waterproof Charger has been discontinued and will not be returning.

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Battery Tender Lithium 800 Waterproof Charger

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Battery Tender Lithium 800 Waterproof Charger

The Battery Tender Lithium 800 Waterproof Charger charges and maintains all lithium powersports batteries using LiFePO4 technology and is completely waterproof for outdoor use. 


  • Input: 120VAC / 60Hz 
  • Output: 12V / 800mA
  • Designed to charge any 12 volt Lithium (LiFePO4) Battery
  • "Supersmart" Technology
  • Spark Proof
  • Short Circuit Protected
  • Reverse Polarity Protected
  • Auto recovery mode for batteries with very low voltage
  • Waterproof
  • Weighs only 1 Pound
  • Listed in the California Appliance Efficiency Database
  • 3 Year Warranty
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Will this unit work on both Li Ion and regular lead acid batteries?
A shopper on Dec 18, 2016
Product Style Item # Manufacturer Product # Availability
12 Volt 869273 BT-TWIN800-DL-WH/0220150DLWH Out of Stock