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Specs are compiled from manufacturer listings and verified buyer reviews and can change over time — please confirm the key details on the product page before buying.
Switching to lithium eliminates the rapid self-discharge and heavy weight of lead-acid batteries. A LiFePO4 battery delivers stronger cranking, longer lifespan, and significant weight savings over lead-acid.
I’m Min Islam — the founder and writer behind Trending Car. This guide is built by comparing the manufacturers’ published specifications and the patterns across verified customer reviews, so you get each pick’s real strengths and trade-offs instead of marketing spin.
You need a motorcycle lithium battery that starts your bike reliably every time, fits your battery tray, and won’t get damaged by your bike’s charging system. That means checking three things: cold cranking amps (CCA — the power to start the engine in cold weather), physical dimensions, and a built-in Battery Management System (BMS — an internal circuit that prevents overcharging and overheating).
Our Picks at a Glance
How To Choose The Best Motorcycle Lithium Battery
Not all lithium batteries are equal; the wrong choice can fail mid-season.
Cold Cranking Amps (CCA) — The starting muscle
CCA measures how much current the battery can deliver at 0°F (-18°C) for 30 seconds while keeping voltage above 7.2V. Higher CCA ensures faster engine cranking in cold weather. A 600 CCA battery will spin a big V-twin easily, while 480 CCA may struggle on a cold morning. Match or exceed your original battery’s CCA for reliable starts.
Physical dimensions and terminal layout
The battery must physically fit your battery tray. The three critical numbers are length, width, and height — measure your old battery before buying. Terminal orientation (which post is positive, which is negative) also matters. Some lithium batteries offer a 4-terminal design that lets you rotate the battery to match either polarity setup.
The Battery Management System (BMS)
The BMS is a circuit board that protects against over-charge, over-discharge, over-current, short circuits, and extreme temperatures. It also balances cells for even aging. Without a good BMS, a lithium battery can shut down unexpectedly or get damaged by a standard lead-acid charger. Always use a dedicated LiFePO4 charger.
Quick Comparison
| Model | Best For | CCA | Capacity | Weight | Amazon |
|---|---|---|---|---|---|
| Autocessking YTX20L-BS★ Best Overall | Budget-friendly Group 20 | 600 CCA | 8AH | 5.91 Pounds | Amazon |
| Anti-Gravity AG-ATZ-10-RSAlso Great | RE-START security | Double OEM (est.) | — | 2.6 lbs | Amazon |
| Antigravity ATX12-HD | Heavy-duty & accessories | 220 (est.) | 8Ah | 3 lbs | Amazon |
| Lithium YTX20L-BS (Forgetyo) | High-capacity cranking | 700A | 12AH | — | Amazon |
| TYKOOL LFP20L-BS-STD | Digital readout & Harley fit | 480CCA | 8Ah | 3.9 lbs | Amazon |
| Forgetyo YTX14-BS | Ultra-light compacts | 600 CCA | 8Ah | 2.76 Pounds | Amazon |
In‑Depth Reviews
1. Autocessking YTX20L-BS Lithium Motorcycle Battery
Our pick — over 4★ from 2,500+ verified ratings; the strongest balance of quality and price.
The budget Group 20 that brings 600 CCA and a 5-year warranty to the table.
At 6.93 x 3.43 x 6.1 inches and 5.874 pounds, this Autocessking battery is the heaviest lithium option here, but it delivers 600 CCA at a price that undercuts most competitors. A 5-year manufacturer warranty backs the buy, which is unusually long for a budget-tier lithium battery. The built-in BMS automatically cuts the circuit if voltage drops below 1V and reactivates after one second — you do not need a special charger to wake it up, unlike some other lithium batteries.
One recurring pattern in reviews tells a more cautious story: a buyer reported an initial failure where the battery died after 5 starts and could not be revived by trickle charging. While the company replaced it with excellent customer service, that single failure rate suggests quality control may vary. Most other owners mention a perfect fit for Polaris Outlaw 500, CFMoto CForce 500, and similar machines, with easy installation and good cranking power after months of use.
The chemistry is LiFePO4, which is environmentally friendly — no acid, no sulfation, and maintenance-free right from the start.
What you get
- 5-year manufacturer warranty is the longest coverage in this comparison — a strong safety net for a budget buy
- 600 CCA is plenty for mid-displacement motorcycles, ATVs, and lawn tractors
- BMS auto-reactivates after a cut-off without needing a special charger
Honest note
- At 5.91 lbs versus the lighter options such as the Forgetyo YTX14-BS at 2.76 lbs, and some units have failed prematurely despite good customer service
Budget-conscious buy: Go for this if you want a 600 CCA lithium battery under with a 5-year warranty and you ride a standard ATV or mid-size bike.
Possible quality gamble: The failure reports mean you should not rely on it for a critical long-distance trip without a backup plan.
2. Anti-Gravity AG-ATZ-10-RS LITHIUM-ION Battery
The premium pick that rescues your ride with a button press if the battery drains.
This battery stands out because of its built-in RE-START technology — a feature that jump-starts your bike without cables or a second battery. If you accidentally leave your lights on and kill the battery, you press a button on the case, start the engine, and ride away. That alone justifies the premium for anyone who has been stranded. Buyers report it saves over 5 lbs compared to a stock YTZ10S, and the four-terminal design gives you flexible wiring for charging leads or auxiliary lights.
The AG-ATZ-10-RS delivers massive cranking power — owners mention double the CCA of the factory battery. It fits a wide range of sportbikes and standards, including the 2018 GSX-R1000R and 2024 KTM 1290 Super Adventure R. The catch is charging: one buyer permanently discharged theirs using an incompatible Oxford Oximiser 900 charger. You absolutely must use a dedicated LiFePO4 charger, like a CTEK Lithium unit, to keep the BMS alive.
Reviewers also love that the battery has posts on both sides, making it easy to hook up a charging cable or power auxiliary lighting without adapters. It fits snugly with the included foam spacer if the case is slightly smaller than your OEM battery box.
what separates it
- Built-in RE-START button jump-starts the battery without external jumper cables or a booster pack
- Four-terminal design fits both left- and right-positive polarity by rotating the battery
- Customers note it weighs roughly 2.6 lbs — about half the weight of a standard lead-acid battery
One thing to know
- Requires a dedicated lithium charger (a standard lead-acid charger can kill the BMS, as some owners discovered)
The safety net pick: Perfect for riders who park for weeks, use accessory lights, or just want a battery that rescues itself before a tow truck does.
Not for budget hunters: This is the most expensive option here — you pay for the RE-START tech and premium build, not raw CBA per dollar.
3. Antigravity ATX12-HD Heavy Duty Lithium Battery
The heavyweight (in name only) that powers a full accessory setup without breaking a sweat.
This is the battery for riders who run heated grips, an amplified speaker system, or auxiliary lights off their bike’s electrical system. The ATX12-HD features a 220 CCA rating (reportedly double the stock battery) and an 8Ah capacity packed into a 3-pound case. One buyer powers four speakers, an amp, lights, and CarPlay on a Can Am Ryker 900 Ace without any issues. The built-in RE-START button mirrors the Anti-Gravity AG-ATZ-10-RS — press it to revive a drained battery without jumper cables.
The Quad Terminal design makes installation flexible: you can rotate the battery 180 degrees to match either right- or left-positive polarity, and the square OEM-style terminals fit your existing cable ends without adapters. Reviewers point out it starts reliably at 24°F in Utah. The design is about 1 inch shorter than stock, so Antigravity includes foam padding to fill the gap. A few buyers wish the kit included metal shims or flush-mount spacers for a perfect fit on certain models like the Harley Pan America.
Antigravity claims up to 200% larger internal packs than competitors in the same group size, which translates to more starts per charge and better cold-weather performance. It also charges up to 5 times faster than lead-acid, according to the manufacturer.
Why it stands out
- Quad Terminal design fits either polarity orientation — just rotate the battery 180 degrees
- Buyers confirm it runs a full accessory setup (heated gear, audio, lights) without voltage sag
- At 3 lbs it is about 9.6 lbs lighter than a typical 12.6 lb lead-acid battery
Fitment detail
- The case is 1 inch shorter than stock on some models, requiring the included foam spacer — a few owners wanted metal shims for a more rigid mount
Built for adventurers: Choose this if you ride a touring bike, adventure bike, or any machine with a long accessory list — it handles the electrical load without flinching.
The catch on fit: The shorter case means you may need to rig a spacer (foam included) for a rattle-free install on certain Harley and BMW models.
4. Lithium YTX20L-BS, 700A LiFePO4 Motorcycle Battery (Forgetyo)
The high-capacity beast that spins a big V-twin faster than lead-acid ever could.
This Forgetyo battery packs 12AH of capacity at 12.8 volts, giving it a 2Ah advantage over the standard 10AH YTX20L-BS class. For a rider with a high-compression Harley, that extra capacity means faster cranking and less voltage drop on cold mornings. A buyer who swapped out the AGM on a 2007 Harley Electra Glide says it cranks immediately without needing a jump pack. The LiFePO4 chemistry produces no venting and less corrosion on your terminals compared to lead-acid.
One reviewer noted it works down to 25°F on a 2021 CFMoto CForce 600 ATV, still cranking faster than the original lead-acid. A built-in BMS handles over-charge, over-discharge, and short-circuit protection, and you can check the state of charge via a small button on the case. The battery is roughly one-third the weight of a lead-acid equivalent — shoppers say that alone transforms how the bike handles at low speed.
The battery’s voltage is listed at 12.8 Volts, which is 7% more than the standard 12 Volts found on some competitor batteries, giving it a slight edge in startup power delivery.
Why it wins
- At 12AH capacity versus the Autocessking YTX20L-BS at 8AH — more power for big engines
- Buyers report it cranks a 2007 Harley Electra Glide instantly without a jump pack, unlike the AGM it replaced
- A voltage check button on the case lets you see the state of charge without a multimeter
Smart storage note
- Forgetyo recommends storing the battery at 50% charge during winter, never below 40%, to boost cycle life
Best for big twins: If you ride a Harley bagger, touring bike, or any high-compression V-twin, the extra capacity and 12.8-volt baseline give you reliable starting power without a jump pack.
Not for tight budgets: This is mid-premium priced — you get the capacity, but budget options cost less per amp-hour.
5. TYKOOL LFP20L-BS-STD Lithium Battery
The digital dashboard battery that shows you real-time voltage with one tap.
A small LCD screen on the top of this TYKOOL battery displays real-time voltage and state of charge at a touch. That is a genuinely useful feature for riders who like to monitor battery health before every ride — no multimeter required.
Buyers confirm it drops directly into a 1994 Harley Dyna battery box with a perfect fit, and the stainless hardware resists corrosion. The built-in BMS manages cell balancing and protects against over-charge and deep discharge, aiming for a 2500+ cycle life. The IP66 rating means the battery is fully sealed against heavy rain and road spray — essential for touring bikes that face all-weather conditions. One reviewer on a vintage Harley reported the battery died after 10 miles because the bike’s charging system was not compatible, so check your regulator’s output voltage before buying.
At 3.9 lbs, it is heavier than the compact options but still lighter than most lead-acid batteries.
Standout features
- Onboard digital LCD screen shows voltage and state of charge at the touch of a button
- IP66 waterproof rating protects against heavy rain and road debris for all-weather reliability
- Ultra-low self-discharge (less than 1% per month) keeps the battery ready after winter storage
Compatibility check needed
- Only works with vehicles whose regulator output stays under 15.0V — vintage bikes may exceed this and damage the BMS
The data-driven choice: Ideal for riders who want to monitor battery health at a glance and need IP66 weather sealing for touring or daily commuting.
Skip it for vintage bikes: If your charging system outputs over 15V, this battery’s BMS may shut down or get damaged — check your regulator first.
6. Forgetyo YTX14-BS Lithium Motorcycle Battery
The featherweight that drops 7 lbs off your bike without sacrificing starting power.
At 2.76 pounds, this YTX14-BS format battery is one-third the weight of a standard lead-acid unit — a dramatic reduction that changes how your bike feels when you lift the seat and, subtly, when you lean into corners. Despite the light weight, it delivers 600 CCA at 12.8 volts and 8Ah of capacity, enough to start most midsize motorcycles, scooters, and ATVs without hesitation. The dimensions are 5.9 x 3.4 x 5.7 inches, so it fits a wide range of replacement cases including YTX14AH-BS, YB14-A1, and 12N14-4A models.
One buyer reports the battery enters sleep mode after 12 hours idle. That means if you park your bike for more than half a day, you may need to connect a charger to wake the battery before starting — a real hassle if you only ride weekly. On the plus side, UL certification (report R2507LVD17601 — a third-party safety standard) adds verified protection, and the battery works from -32°F discharge (so it starts in freezing weather) to 131°F charge (so it handles hot summer charging).
The recommended charger is a 14.6V DC lithium battery charger at 1-2 amps, which takes about 3 hours for a full charge.
Weight advantage
- At 2.76 lbs versus the Autocessking YTX20L-BS at 5.91 lbs.
- UL certified for safety, with an operating range from -32°F (discharge) to 131°F (charge)
- 600 CCA at 12.8 volts provides reliable starting for most midsize bikes and ATVs
Annoying quirk
- Battery enters sleep mode after 12 hours of idle time, requiring a charger to reactivate — inconvenient for weekly riders
The weight weenie’s pick: If you track your bike, race, or just hate lifting a heavy battery under the seat, this is the lightest drop-in option that still delivers 600 CCA.
Skip if you ride infrequently: The 12-hour sleep timer means you will need to trickle-charge before every ride if the bike sits longer than a day.
Understanding the Specs
Cold Cranking Amps — CCA
CCA tells you how much current the battery can push at 0°F for 30 seconds while staying above 7.2 volts. Higher CCA means faster cranking in cold weather and a better chance of starting a high-compression engine. For most midsize bikes, 400 to 600 CCA is enough; big V-twins benefit from 600 CCA or more. Always match or exceed your original battery’s CCA for reliable cold starts.
Amp-Hours — Ah
Amp-hours measure how much energy the battery stores — think of it as the fuel tank size. A 12Ah battery holds more reserve than an 8Ah one, meaning it can power your bike’s electronics longer without the engine running and handle more “key-on, engine-off” accessory use. For bikes with heated grips, auxiliary lights, or audio systems, a higher Ah rating helps prevent voltage sag.
Battery Management System — BMS
The BMS is a circuit board inside the battery that protects the cells from over-charge, over-discharge, over-current, short circuits, and temperature extremes. It also balances the cells to keep them aging evenly. A good BMS is the difference between a battery that lasts 5 years and one that dies after a single deep discharge. Never charge a lithium battery with a standard lead-acid charger — the BMS can get damaged.
LiFePO4 Chemistry
Lithium Iron Phosphate (LiFePO4) is the safest lithium chemistry for powersport batteries. It does not catch fire when punctured, does not off-gas explosive hydrogen like lead-acid, and handles deep discharges better than other lithium chemistries. It also provides a very flat voltage curve — you get full cranking power right up until the battery is almost empty, unlike lead-acid which sags gradually.
FAQ
Will a lithium motorcycle battery fit my bike without modifications?
Do I need a special charger for a lithium motorcycle battery?
What does the BMS do and why is it important?
How much weight can I save switching to lithium?
Can I use a lithium battery in cold weather?
How long does a lithium motorcycle battery last?
What is RE-START technology and how does it work?
Will a lithium battery damage my motorcycle’s charging system?
Can I mount a lithium battery in any position?
Is a higher CCA always better?
Final Thoughts: The Verdict
For most riders, the motorcycle lithium battery to beat is the Anti-Gravity AG-ATZ-10-RS because its built-in RE-START button lets you start the bike even after you accidentally drain the battery — no jump leads needed. The four-terminal design (two positive and two negative posts) fits most bikes without adapters. If you run heated grips, GPS, and extra lights, the Antigravity ATX12-HD keeps voltage steady with its Quad Terminal design and 8Ah capacity (amp-hours — how long the battery can power accessories). For riders who want 600 CCA (cold cranking amps — enough to start most large engines in winter) without spending top dollar, the Autocessking YTX20L-BS comes with a 5-year warranty for confidence.
How We Picked
We do not accept paid placement. Every pick is matched to a real buyer and a real use-case; we do not hands-on test units.
Sources & Methodology
Specifications: manufacturer listings and product documentation. Review insights: verified customer reviews, as of July 2026. Pricing: not shown on this page (it changes often); check the current price via the retailer link.
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