Antigravity Batteries is happy to offer the Optimate LFP4s  0.8Amp  maintainer/charger for 12v  Lithium Batteries. Its a lower amp charger but still charges or maintains All 12v Antigravity Batteries as well as other brands of lithium batteries great.  A cost-effective charger for your lithium battery maintenance.

Overview of Tecmate Optimate Lithium Maintenance Charger .8 Amps- TM470

• The most cost-effective solution for long-term maintenance of 12V lithium (lifepo4) batteries in any vehicle stored in or outdoors
• Very easy to use, simply connect to the battery and plug it into the nearest power socket, the rest is fully automatic
• Automatically brings the battery to full charge with 0.8A constant current and then switches to the unique OptiMate battery-saving maintenance charge mode to keep the battery at 100% ready and at the same time provides power to the onboard computer, display or anti-theft alarms.
• Recommended for Lifepo4 lithium battery brands
• Weatherproof and lightweight weighs in at 1 lb
• Includes permanent ringlet connector with weatherproof cap and a set of battery clips
• Includes all safety features such as reverse polarity protection, no spark connection; approved to UL and CSA safety standards for automatic battery chargers; fully-automatic
  Included Items: (1) Fully automatic battery charger with harness and positive and negative clamps (1) Direct connect fused harness