Antigravity Batteries® ATZ-7-RS Lithium Ion Battery with BMS and Re-Start Technology - 150cca 1.32 Pounds 7Ah - Replaces YTZ5S, YTZ7S, YTZ8V, YTX4L-BS, YTX5L-BS, YTX7L-BS

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These are the First Motorsports Batteries with built-in RE-START technology & a Battery Management System (BMS) The New 4 Terminal Design means DUAL POLARITY!

The NEW Antigravity ATZ-7-RS battery is built with our groundbreaking RESTART Technology (built-in jump-starting) so you won’t ever get stranded with a dead battery again! This compact, lightweight Lithium-Ion battery directly replaces the OEM YTZ7S and YTZ5. 90% of off-road bikes use this size as well as some street bikes.

The new ATZ-7 Re-Start Battery is an extremely lightweight and high-power Lithium-Ion replacement for the heavy lead/acid battery found in many motorcycles including most every Enduro bike on the market. Additionally, the new ATZ-7 offers the first FULL Battery Management System (BMS) found on a Powersport Battery and includes low-voltage cut-off, over discharge, over-charge, and thermal protections with real time lithium-ion cell balancing.


• World’s First Powersport Battery with a FULL Battery Management System (BMS) including Over-Discharge, Over-Charge*, Thermal Protections and Cell Balancing.
• RE-START TECHNOLOGY: The RE-START Battery intelligently monitor its status; if it senses over-discharge it will put itself into a sleep mode, yet saves enough energy to allow you to RE-START your vehicle. Simply press the RE-START button on battery. (A Remote RE-START Button will soon be Available so you can activate the RE-START feature without accessing battery.)
• 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 40 pounds in some Race Cars. Carbon Fiber costs thousands to lose a pound of weight; with our LiFePO4 battery a few hundred dollars will lose roughly 8-15 pounds and offers better starting and handling!
• 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.
• LOW SELF-DISCHARGE: The RE-START 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.

(*Over-Charge protection will not protect from a faulty/old Voltage Regulator spiking Hi-Voltages to Battery. If you have a Pre-1990s Motorcycle replace your voltage regulator; it is over 25 years old and most likely broken by now.)




There will soon be a Remote KeyFob Button to activate the RE-START feature so you won’t have to remove a seat or fairing to access the battery.


Please Note: For custom V-twin applications over 103 cubic inches or when a higher compression, modified motor is being used we do not recommend RE-START batteries due to the extremely high current draw of larger V-twin motors. 

Please use the following models for large V-twin applications: YTX20,  YTX12-24,  YTX12-20, or V-10.



Width = 2-3/4"              

Length = 4-7/16"              

Height = 3-3/8"

Weight = 1 Pound 6.5 Ounces



Length = 115mm            

Width = 70mm              

Height = 85mm

Weight = 600 Grams



Battery (Charged)

(2) Terminal Bolts 

3 Year Warranty (See manufacturers website for details)



For replacement of all OEM Lead/Acid Batteries of same size.

Capable of every day Street use in bikes up to 450cc.

Great for Enduro and MX electric start bikes up to 450cc.

Race and Track Day use in 4-Cylinder 600cc sport bikes.

Custom builds like cafe racers or small bore customs up to 500cc.

Please Note: if you own an older classic bike from mid 1980s and earlier you must update the charging system to a modern solid-state voltage regulator. Damaged or excessively old voltage regulators can over-charge and damage lithium batteries and cause smoking and melting of battery. This is NOT a fault of the battery!



Direct replacement for these OEM battery sizes:





Cranking Amps: 150

Amp Hours: 7Ah (PbEq)

Weight: 1 Pound 6.5 Ounces

Width: 2-3/4"              

Length: 4-7/16"              

Height: 3-3/8"



Keep in mind that we have a Lithium Ion battery for just about ANY application!