SKU: 4071687595

Antigravity Group-51R Lithium Car Battery

Sale price$466.65 Regular price$518.50
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Ships within 48 hours · Estimated delivery Sep 29 - Oct 4

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Description

Antigravity Group-51R Lithium Car BatteryAntigravity Batteries has changed the game again with our latest Lithium Ion Car Batteries. The newest RE START line of batteries offers built in WIRELESS Jump Starting! That means if your battery is ever discharged, simply press the Button on our provided Keyfob, start the car and drive away! No need for a Jump Starter, or Roadside Assistance. You dont even have to open the hood to access the battery, and can do it from the safety of sitting in your

Antigravity Batteries has changed the game again with our latest Lithium-Ion Car Batteries. The newest RE-START line of batteries offers built-in WIRELESS Jump-Starting! That means if your battery is ever discharged, simply press the Button on our provided Keyfob, start the car and drive away! No need for a Jump-Starter, or Roadside Assistance. You don’t even have to open the hood to access the battery, and can do it from the safety of sitting in your car! If you want to also track your battery status via Bluetooth, you can use the Lithium Battery Tracker.

  • Group 51R OEM Automotive Case size (directly replace stock battery).
  • LxWxH: 9.4 x 5.2 x 8.6 inches.
  • Amp Hours: 24 Ah or 30 Ah.
  • High Power: 24Ah=1000CA, 30Ah=1200 Cranking Amps.
  • Exclusive RE-START Technology: Wireless Jump-Starting built-in; just press the button on your Keyfob remote.
  • Complete Battery Management System built-in.
  • Ultra Lightweight: Drop up to 40 lbs instantly! 70% lighter than lead.
  • Safest Battery Technology using full BMS and Lifepo4 Lithium chemistry.

RE-START TECHNOLOGY

BUILT-IN JUMP-STARTING

Never stranded again… Our amazing RE-START Technology is the first battery ever to offer Wireless Remote-activated built-in Jump Starting. (Can also be activated manually by pressing Restart button on top of battery.) So it won’t allow you to get stranded with a dead battery! For example if you left your lights on the intelligent Battery Management System (BMS) in the battery would put itself to sleep before being drained dead, yet save just enough energy to start your vehicle again and get you out of that emergency. And with our WIRELESS REMOTE KEYFOB you can activate the Jump-Starting without ever opening the hood of the car. Simply press the Keyfob Button, start your car and drive away.

FULL BATTERY MANAGEMENT

BUILT-IN BMS FOR SAFETY AND LONG LIFE

The Antigravity Batteries RE-START system offers the latest technology for the safest, longest life cycle possible. Our superior on-board Battery Management System (BMS) offers Safety Circuitry to prevent Over-Discharge and Over-Charge, and has Short-Circuit protections, while additionally offering Cell Balancing and Thermal protections. These advanced features of our BMS make the battery not only as safe as possible, but also extend the life of the battery by keeping the battery in the prime operating zone and not allowing damage to the battery. Therefore creating the longest possible Life Cycle. From 7-9 years are expected from the Antigravity RE-START Batteries depending on use and climate.

EXACT DROP-IN FITMENT

EXACT FIT FOR MOST VEHICLES

The Antigravity Batteries RE-START Automotive Batteries come in EXACT FIT OEM sizes for most all Performance and Passenger Cars/Trucks. We are the First Lithium-Ion Battery company to offer the most popular BCI Sizes of H5/Group 47, H6/Group 48, H7/Group 94R, Group 51R and others. These are standard sizes in most all Cars and Trucks. So whether you have a Porsche, Lamborghini, GTR, Mustang, Camaro, Corvette, Viper, BMW, Audi, Subaru or other Performance Car, we have a model that can fit. But keep in mind Lithium isn’t only for performance cars; it works great in passenger cars too! (Please check our Car Battery Fitment and Car Battery Installation pages for details).

PERFORMANCE BENEFITS

Weight: The ultralight Antigravity RE-START Batteries weigh from 8 lbs to 16.5 lbs (4-7 Kg) depending on the model. On average this equates to a weight loss from 35- 60 lbs (16-27 Kg) over a typical lead/acid battery! The incredible weight savings will increase your vehicle’s performance in several key areas such as handling, allowing shorter braking distances, improved acceleration and even better gas mileage. Additionally, our Lithium-Ion battery is by far the most economical weight loss product on the market! A 30 lbs weight reduction in Carbon Fiber or Titanium would cost over $50,000 dollars compared to roughly $700-$800 dollars for our Battery.
Power: The high cranking power of the Antigravity Lithium-Ion Battery can start Motors up to 900 Horsepower easily! Additionally for even more weight loss you can go with a smaller Amp Hour Battery if you want the lightest weight possible. Power will rarely be an issue being our small batteries will easily turn over Hi-Performance Motors up to 600 Horsepower!

AMP HOUR / CAPACITY OPTIONS

At Antigravity Batteries we realize our customers have different applications. So we offer different Amp Hour Capacities in the same Case Size for most of our automotive batteries. For example the H6 Case Size is used in the Porsche 911 Series of Cars, but is also used in some SUVs. So a higher Amp Hour Capacity Battery will be desirable in an SUV, but the Porsche owner might want to lose as much weight as possible for Track use, so we have a 24 Ah H6 Size battery that saves another 10lbs and benefits the Porsche Owner. So you can choose the option that suits your application the best. We have most models available in 24Ah, 30Ah, 40Ah and 60Ah.

GROUP 51R

(Positive Terminal on Right side) Available in 24Ah, 30Ah

but Cranking Performance better than a 90Ah Lead Battery

51R-24-RS
24 Amp Hours
1000 Cranking Amps
8.5 lbs
RACE ONLY

51R-30-RS
30 Amp Hours
1200 Cranking Amps
11.7 lbs

FEATURES & BENEFITS

  First Battery with WIRELESS Built-In Jump-Starting! Wireless Keyfob Remote actuated Emergency Jump Starting. So you won't be stranded by a dead battery ever again!

  FULL Battery Management System (BMS) including Over-Discharge, Over-Charge, Short Circuit, Thermal Protections and Cell Balancing.

  RE-START TECHNOLOGY: The RE-START Battery has self-restarting capabilities. It intelligently monitors its status and 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 Wireless Keyfob.

  OEM FITMENT: Exact Lead/Acid Replacement sizes. No additional modifications or trays necessary to install.

  LONGER LIFE: 2x to 3x the lifecycle of lead/acid and other Lithium batteries due to full Battery Management system.

   HIGH POWER: Up to 3x the Cranking Amps of similar sized lead/acid battery. Better Starting and higher voltage at start-up.

  ULTRA LIGHTWEIGHT: The Antigravity RE-START Battery can be as much as 70% lighter than the Lead/Acid equivalent. This equates to roughly 25-55 lbs of instant weight-loss just by changing out the battery! That makes the Antigravity Lithium-Ion Battery the most cost-effective weight-loss product hands-down, while offering better starting, handling and braking! A real performance value!

  LOW SELF-DISCHARGE: The RE-START Battery does not self-discharge like Lead/Acid Batteries. It offers a longer storage time provided there are not excessive Parasitic Drains on the battery.

  DURABILITY AND CAR SAFE: Much more resilient to vibration than Lead/Acid. Incredibly shock and vibration resistant; no liquids or acid inside to spill or drain out. Will not release dangerous Hydrogen while Charging and will not leak liquids that are damaging to your finish or chassis such as acid.

  ENVIRONMENTALLY SAFER BATTERY: No Acid or Heavy Metals such as Lead, Cadmium, or Mercury. Always remember to Recycle your batteries responsibly!

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 4071687595

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4.2 ★★★★★
Based on 23 reviews
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afireinside1988
Lexington, US
★★★★★ 5
Excellent fit and finish for the money. Just buy them.
Size: For BMW E46 2002-2005, Size: For BMW E46 2002-2005
Perfect fit. These grilles were better quality than the price would suggest. Easy to install, not brittle, and fit very snug. I’m not sure why there are so many negative reviews for these. I was fairly rough with the first one I installed and it didn’t crack. They look great. For a purist with excess money lying around, sure, go with genuine BMW. For a daily driver, you’d never know the difference aside from the black finish. Save the money spent on these over the OEM BMW and use it for something else. Below need not be read unless you like long winded car resurrection stories... The back story on the car for those who might wanna talk trash about its condition: I bought this ‘01 330xi from a buddy who really beat the car up. I’ve had to replace the entire front end and am in the process of painting the car. I had to source a hood at my local pick ‘n pull due to low funds because I bought a new house recently. The hood I found at the parts yard was for an ‘04 e46 (post facelift). Hood fits just fine and the grilles are perfect. Don’t hesitate to buy!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 10, 2020
D
Verified Purchase
Daniel Bremer
Pawtucket, US
★★★★★ 5
e46 Sedan Black Kidney Grill: Good fit with a better attachment mechanism than stock!
Size: For BMW E46 1998-2001
These kidney grill replacements were for a e46 sedan (323i). They fit really well. They come with a different type of attachment mechanism than other types I've used in the past: These have 'posts' with a slight groove that you gently pry into place against the hood's mounting tabs. It's a solid holding mechanism - much better than the tab-types I've seen in the past. These do not wiggle around, and feel very solid once mounted. They DID require a bit of fitting with a dremel where the hood release latch is mounted to the hood. I had to cut back about half-an-inch of the inner 'shell' of the grill so it didn't interfere with the latch when you pull 'up' on it to release the hood. Based on having an e46 sedan for 16+ years, and having replaced the kidney grills several times, I'm quite fine with a little bit of modification for a good fit. I like these quite a bit better than other aftermarket types, and even the OEM BMW grills. The price is good, and mounting is solid. I liked them so much, I purchased a second set for my son's 323i right after putting them on one of my 323i's. I plan on getting a set for a 325Ci one that car needs replacements.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 24, 2021
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Verified Purchase
Jean Colon
Port Orchard, US
★★★★★ 5
They fit super snug and the quality is way better than price suggests.
Size: For BMW E46 2002-2005
They came in wrapped very well in foam and bubble wrap. They felt sturdy and the matte finish was satisfactory. They needed quite some pressure to snap in but when they did you could tell they weren’t going anywhere. The fitment is perfect and it looks great. If the stubs in the car where the grille clips attach are in tact you shouldn’t have a problem. Don’t be discouraged by the negative reviews.
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Reviewed in the United States on January 30, 2024
W
Verified Purchase
W. Biggs
Alexandria, US
★★★★★ 4
Good value for the money
Size: For BMW E46 2002-2005
The matte is flawless and looks pristine & super easy to install. It does fit and it’s a good enough fit for a daily driver; however, it’s not a flawless fit. It’s off by maybe a 1/16th on the inside corners. It’s amazingly close despite the price point…would definitely recommend.
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Reviewed in the United States on March 28, 2022
S
Verified Purchase
Slow Walk
Battle Creek, US
★★★★★ 1
VERY poor materials and fit for E46, WILL FALL OUT
Size: For BMW E46 2002-2005, Size: For BMW E46 2002-2005
This part resembles the original, but not enough. It is both too big AND too small, depending on the dimensions. It's too small from top to bottom, and too big from side to side. The locking tabs don't get close enough to lock (see pics) because there is too little clearance. Viewing from the front, the outer top corner is so far out (see pics) that the most important tab cannot properly lock in, causing the grill to drop out into my hand (or the ground, if I wasn't there to catch it). The grill also is missing some important curves to follow the shape it is supposed to fit into. It also wasn't matte black as ordered. It looks like it was spray-painted, but I can't be sure. it is made of VERY brittle plastic, and the locking tabs are VERY small and flimsy. I wouldn't expect this part to survive a month or two before blowing away in a medium breeze. One positive is that there is a relief cut to allow the hood safety catch handle to move fully upward without interfering with the plastic grille. That one positive has a lot of making up to do, and there's no way it can do it. Add to that that the seller included instructions for a car fifteen years newer than the model advertised on the item page, and we have a complete failure. But don't worry! I'm sure the seller will probably delete the listing and make a new one so they don't have to have this honest review attached to it.
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Reviewed in the United States on March 6, 2025

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