Description Antigravity ATX20-HD Lithium Battery The Antigravity ATX20-HD battery is a High Power, lightweight lithium replacement for the popular YTX-20 size Lead/Acid battery. This is our HEAVY DUTY version, designed with significant Power and Amp-Hour Capacity in this popular case size. YTX20 Standardized Case Size: 6.89 x 3.4 x 5.12 inches (LxWxH) 780 Cranking Amps 30 Amp Hours (PbEq), 15Ah (Actual)/ 192Wh 5.18 lbs Lighted Voltage Indicator to see state of charge (doesn’t have RE-START) Safest Battery Technology using full BMS and Lifepo4 Lithium chemistry Compatible with 10 OEM battery sizes (see below) Can be mounted in any orientation OEM Size Lithium Battery (Direct Replacement) The Antigravity Batteries ATX20-HD and ATX30-HD are part of our HD (Heavy Duty) Series, specifically designed to offer SIGNIFICANTLY more Amp Hours (6 Ah more per battery) and Power than the original versions of the ATX20/30 to meet the special needs of those looking for the most compact yet powerful battery. These batteries are intended for those special applications like heavily accessorized Touring Motorcycles, Racing and Street Performance Vehicles, Experimental Aircraft and more. Simply put, these are the most powerful and compact batteries available from any manufacturer. The Heavy Duty ATX20 and ATX30 do not have our RE-START built-in jump-starting feature but offer a deeper level of Discharge for more usable Capacity and more Power for Cranking. They also offer a FULL Battery Management System (BMS) to protect the battery from over-discharge and over-charge as well as having Thermal Protections. This makes for the safest and longest life-cycle possible. Many Applications These batteries are intended for those special applications where an extremely compact size with the most Amp Hours possible is required. We have focused these Batteries to work in Performance Street/Race Motorcycles, Powersports and Automotive Vehicles*; Large Touring Bikes that want extra Capacity; and other uses such as Experimental Aircraft. They can even be used to Power 12v accessories. (*Due to lower amp-hour capacity, not recommended for Street-use automobiles.) FEATURES Most Advanced Lithium Battery on the market. The first FULL Battery Management System (BMS) including Over-Discharge, Over-Charge*, Thermal Protections and Cell Balancing. LONGER LIFE: Up to twice the lifecycle of lead/acid, and other Lithium batteries due to full Battery Management system. HI POWER: Up to 2 Times the Cranking Amps of similar sized lead/acid batteries. Better Starting and higher voltage at start-up. ULTRA LIGHTWEIGHT: Up to 70% lighter than equivalent lead/acid battery. Up to 15 lbs in bikes or 45 pounds in Race Cars. NEW 4 Terminal Design allows easy installation in any vehicle. Fits right or left hand Negative or Positive connections. No more looking for the correct Terminal locations in certain bikes or cars. LOW SELF-DISCHARGE: Antigravity Batteries do not self-discharge like Lead/Acid Batteries. They can hold a charge up to a year provided there are no “Parasitic Drains” (accessories that draw power when bike is off, i.e. alarms, ECUs, GPS, heated grips, and other accessories the vehicle might have). DURABILITY: Our lithium batteries are shock and vibration resistant making them perfect for Racing, and other applications requiring a durable battery. MOUNTING: You can mount our battery in any orientation, there are no liquids to spill or drain out. ENVIRONMENTALLY SAFER BATTERY: No Acid or Heavy Metals such as Lead, Cadmium, or Mercury.