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Antigravity ATX-30 RE-START Battery

Our Price:  £479.99(Inc. 20% VAT)(£399.99 Exc. VAT)

Model:  AG-ATX30-RS

Weight:  2.60 kg



In stock, immediate despatch

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  (3 Reviews)

The NEW Antigravity ATX30-RS battery is built with our ground breaking RESTART Technology (built-in jump-starting) so you won’t ever get stranded with a dead battery again! The ATX30-RS is a High-Power Lithium battery to replace the YTX30 OEM Lead/Acid Battery, as well as some YIX and GYZ models. 880 CA, 30 Ah (Pb Eq).

(Please note if you use older bikes from the mid 1990's and earlier you must update the charging systems to a modern voltage regulator. Damaged voltage regulators can over charge and damage lithium batteries)

Due to their excessively high current draw, the restart & heavy duty series of batteries are not suitable for bikes with large, modified or custom V Twin engines


RE-START Series: FIRST Batteries with Built-In Jump-Starting!

OEM Size Lithium Battery (Direct Replacement)


Never stranded again… Antigravity Batteries introduces the ground breaking “RE-START (RS)” line of batteries – the first batteries with built-in jump starting! The revolutionary ATX-30 RE-START Battery intelligently monitors its status, and just before going completely dead puts itself to sleep with just enough energy to get your vehicle started again. Simply press the RE-START Button located on the battery, start your vehicle and drive away… No more dead battery emergencies or being stranded!

Is your battery hard to reach in your motorcycle or powersports vehicle? Use our NEW RE-START REMOTE accessory to activate the built-in Jump Starting of our batteries, instead of having to access the battery and push the RE-START Button. Simply connects to your existing Battery Charging Harness (SAE/Battery Tender type) to remotely activate the RE-START feature of the battery. No need to remove your seat or access the battery.


The ATX30-RS is an extremely lightweight and high-power Lithium-Ion replacement battery for the heavy lead/acid YTX30 battery found in many Motorcycles and Powersport Vehicles. The ATX30-RS offers the first FULL Battery Management System (BMS) found on a Powersport Battery and includes low-voltage cut-off, over-discharge protections, over-charge protections, and thermal protections with real-time lithium-ion cell balancing. If you want to also track your battery status via Bluetooth, you can use the Lithium Battery Tracker.

Automotive Applications

The ATX-30 Re-Start battery can also be used in Hi-Performance Automotive and Racing applications where extremely high cranking power and massive weight reduction in a very compact size are desired.  (NOTE: For later model Ford MUSTANG, and FOCUS MODELS, the PCM controlled “Smart Charging System” is not compatible with the RE-START feature; please see below.). For Automotive applications, be sure to also check our ATX30-HD “Heavy Duty” version which might better suit your needs.


To give you an idea of the power of this battery, the ATX30-RS can easily start Motors up to 700 Horsepower yet the ATX30-RS weighs LESS than 5 pounds! At a massive 880 Cranking Amps in an extremely compact size, this battery offers the most power in the smallest package you can find for your vehicle. Additionally it features our exclusive RE-START feature so you won’t get stranded with a dead battery.







First Motorsports Battery with built-in RE-START & BMS.

New 4 Terminal Design for easy installation in any vehicle.


  • World's First Battery with Built-in Jump Starting using our RE-START Technology.

  • 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.

  • 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 6.8 Kg's in bikes or 18 Kg's in some Race Cars. Carbon Fiber costs thousands to lose a pound of weight; with our LiFePO4 battery a few hundred pounds will lose roughly 3.6 to 14 Kg's 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 year old and most likely broken by now.)


Use only Lithium specific Motorsport Chargers to charge this battery!

Do not use Lead/Acid Chargers.



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

Excellent for every day use in bikes up to 2500cc. 

Great for extra large, high-performance V-Twin motors.

Excellent for Harley Davidson Touring Bikes and other large Touring bikes that use the YTX30 size batteries.

Excellent for use in Performance and Race Cars of all types including large V-8 Racing Motors up to 800 Horsepower. Please check the RS-30 Lithium Automotive Battery when more power and capacity is needed.



Replaces YTX, YIX & GYZ Models

The lithium ATX-30-RS is a direct replacement for these OEM battery sizes:      YTX30 | YTX30L-BS | YIX30 | YIX30L | YIX30L-BS | GYZ32HL





Average Rating (3 Reviews):  
Write a Review and share your opinions!

Why did I not buy this battery earlier
05 June 2023  | 

I should have bought this battery in the begining, rather than having to buy the standard battery several times.
During a lot of tests on the car I forgot to turn of the lights. The battery did what it is supposed to do and switched off. I pressed the reset button, and the car fired up without any issues. Straight six 11,7:1 compression.
I am buying these batteries for the next project car as well.

Was this helpful to you?  Yes  /  No

This review has not been appraised.

Huge power, no weight!
03 August 2022  | 

We were initially very wary of lithium batteries due to what we had heard around the paddock, we did use a red top 35 in our Dallara F3 car, this battery failed so we looked for a lighter alternative.
We carried out a test day and were super impressed with the power delivery with hardly any drop of in use, constant 12.5 V while car is running flat out and we have no alternator on car!
We would highly recommend these batteries.

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This review has not been appraised.

Great product and first class service!
26 August 2020  | 

With the assistance of Customer Service I chose this battery for my Porsche Boxster along with a cradle and vehicle terminals for it to fit. The size and weight saving are astonishing!

For anyone putting this battery in a Boxster or 911, I would recommend the micro start jump starter as well, as this battery does not have a remote start fob and of course you need to be able to open the trunk to access the battery.

Customer support is knowledgeable, helpful, and efficient.

Highly recommended.

Was this helpful to you?  Yes  /  No

This review has not been appraised.


UK orders. Orders for delivery within the UK are sent by Courier.

Delivery time is 1-2 days. Priority next-day delivery: £9.95. A tracking number will be sent to you by email when dispatched. Delivery time is next day for orders received before 3pm, 2 days for orders received after 3pm.

International orders. Orders for delivery outside the UK are usually sent by UPS or other services maybe used dependant on location, shipping cost are calculated on Country and area which will be advised at point of order.

Please email or call for shipping quote.

Shipping Weight 6.3 lbs (2.86 kg)
Shipping Dimensions 8 x 8 x 8 in
Product Weight

5.75 lbs (2.6 kg)

Product Size

6.5 x 5 x 6.89 in (mm: 165 x 127 x 175)

Cranking Amps


Amp Hours (Pb Eq)


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