Finding a small battery for your motorcycle can be tricky. We researched and compared the top options based on manufacturer specifications, industry standards (BCI, SAE), and aggregated owner feedback. Our evaluation focuses on cranking amps, size compatibility, durability, and value. Whether you need a lightweight lithium iron phosphate (LiFePO4) or a reliable sealed lead-acid (AGM), we have you covered.
We evaluated each battery for performance, durability, value, ease of installation, and safety. Below are our top picks with honest pros and cons, including who should skip each one.
| Photo | Product | Score | Buy |
|---|---|---|---|
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Antigravity Batteries ATX-12 Restart Best Overall Lithium, 12V, 240 CCA, 5.9 x 3.4 x 5.1 in |
9.0 | 🛒 Check Price |
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Shorai LFX14A2-BS12 Best Lightweight Lithium, 12V, 210 CCA, 5.9 x 3.4 x 4.4 in |
8.7 | 🛒 Check Price |
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Yuasa YTX12-BS Best AGM AGM, 12V, 210 CCA, 5.9 x 3.4 x 5.1 in |
8.4 | 🛒 Check Price |
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Mighty Max ML9B-4B Best Budget AGM, 12V, 120 CCA, 5.9 x 3.4 x 4.4 in |
8.1 | 🛒 Check Price |
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Weize YTX14-BS Best Value AGM AGM, 12V, 200 CCA, 5.9 x 3.4 x 5.1 in |
7.8 | 🛒 Check Price |
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NOCO Lithium NLP9 Premium Compact Lithium, 12V, 250 CCA, 5.9 x 3.4 x 3.9 in |
8.3 | 🛒 Check Price |
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Battery Tender BTL14A240C Reliable Lithium Lithium, 12V, 240 CCA, 5.9 x 3.4 x 5.1 in |
7.3 | 🛒 Check Price |
1. Antigravity Batteries ATX-12 Restart: Best Overall
The Antigravity ATX-12 Restart is our top pick for most small motorcycles. It uses lithium iron phosphate chemistry and includes a unique Restart feature that automatically shuts off the battery to preserve enough charge to start the bike later. In our evaluation, it delivers strong cranking power (240 CCA) and fits many compact bikes like the Honda Grom, Kawasaki Z125, and small dirt bikes. Owner feedback highlights its longevity and consistent performance.
However, the ATX-12 is not ideal for bikes with constant power draws like alarms or GPS trackers, as the Restart function may engage prematurely. Also, it requires a compatible lithium charger. Riders with older charging systems (pre-2000) should check voltage regulator compatibility before buying.
- Restart technology prevents battery drain from leaving lights on.
- Weighs only 2.5 lbs, ideal for weight-sensitive bikes.
- Built-in Battery Management System (BMS) protects against overcharging and short circuits.
Pros: Restart feature is a lifesaver for forgetful riders.; Very lightweight and compact.
Cons: Not suitable for bikes with high parasitic draw (alarms, GPS).
2. Shorai LFX14A2-BS12: Best Lightweight
The Shorai LFX14A2-BS12 is a featherweight lithium battery that excels in weight reduction. We compared its specs against other lithium options and found it offers one of the best power-to-weight ratios. It provides 210 CCA, enough for most small to mid-size motorcycles. The included foam spacers allow it to fit in different battery trays, making installation straightforward.
While the Shorai is a top performer, it is not the best value for budget-conscious riders. Additionally, it does not have a restart feature like the Antigravity, so you must be careful not to drain it completely. Riders who store their bike for long periods will appreciate its low self-discharge, but those needing a battery for a daily commuter with a high drain should consider an AGM alternative.
- Extremely light at 2.3 lbs, reduces overall bike weight.
- Long shelf life with low self-discharge (holds charge for months).
- Comes with foam spacer kit to fit various battery boxes.
Pros: One of the lightest batteries on the market.; Excellent cold-cranking performance for its size.
Cons: Higher upfront cost compared to AGM batteries.
3. Yuasa YTX12-BS: Best AGM
The Yuasa YTX12-BS is the go-to AGM battery for those who prefer a traditional, maintenance-free lead-acid battery. We researched its specifications and it meets or exceeds OEM requirements for many small motorcycles, including dual-sport and cruiser models. Owner feedback consistently praises its reliability and long service life when properly maintained with a tender.
However, this battery is significantly heavier than lithium options, which may be a drawback for racers or off-road riders. It also does not perform as well in extreme cold compared to lithium. Riders with vintage bikes that have older charging systems may find this a safer choice than lithium, but those seeking the lightest possible setup should look elsewhere.
- Maintenance-free sealed AGM design, no water refill needed.
- Proven durability with a strong track record in OEM applications.
- High vibration resistance for rough roads.
Pros: Reliable and long-lasting for conventional bikes.; Works with standard chargers.
Cons: Heavier than lithium alternatives (about 7 lbs).
4. Mighty Max ML9B-4B: Best Budget
The Mighty Max ML9B-4B is a budget-friendly AGM battery that offers decent performance for small motorcycles with minimal electrical demands. We compared its specifications and found it suitable for bikes like the Honda CRF150F, Yamaha TTR125, and other small-displacement models. It is sealed and maintenance-free, making it a hassle-free option for occasional riders.
However, its 120 CCA is on the low side, so it may not crank larger engines or start reliably in freezing temperatures. Riders with a bike that requires more cranking power should consider a higher-CCA battery. Also, its lifespan tends to be shorter than premium AGM or lithium batteries. It is best used in a climate-controlled storage or for bikes that are ridden seasonally.
- Very affordable price point for an AGM battery.
- Fits many Honda, Yamaha, and Suzuki small bikes.
- Sealed and spill-proof design.
Pros: Excellent value for the price.; Good for low-power applications like scooters and small dirt bikes.
Cons: Lower CCA (120) may struggle in cold weather.
5. Weize YTX14-BS: Best Value AGM
The Weize YTX14-BS is a solid AGM battery that offers a good balance of performance and cost. We evaluated its specifications and it provides 200 CCA, which is sufficient for many 250cc to 600cc motorcycles. It comes in a dry state with an acid pack that you must fill and charge before first use. Owner feedback indicates it works well for riders on a budget who don’t mind a little preparation.
However, the activation process can be messy if not careful, and the battery may not last as long as premium brands like Yuasa. Some users report premature failure if the battery is not charged properly after activation. Riders looking for a plug-and-play solution should skip this one. It is best for those comfortable with basic battery maintenance.
- Good CCA for its size, suitable for many mid-size bikes.
- Includes acid pack for activation, ensuring fresh battery.
- Comes with a 1-year warranty.
Pros: Good cranking power for the price.; Widely compatible with many Japanese bikes.
Cons: Requires activation and initial charge; not ready out of box.
6. NOCO Lithium NLP9: Premium Compact
The NOCO Lithium NLP9 is a premium lithium battery designed for compact motorcycles and powersports vehicles. We researched its specs and it delivers an impressive 250 CCA from a battery that is only 3.9 inches tall. It fits in tight spaces where other batteries might not. The included multi-fit terminal adapters make installation straightforward. Owner feedback highlights its strong starting power even in cold conditions.
However, the NLP9 is one of the more expensive options per CCA. It also may not be compatible with older charging systems that lack a lithium-specific mode. Riders with a strict budget or those who don’t need the extra cranking power should consider the Antigravity or Shorai. It is ideal for high-performance small bikes or those with limited space.
- Ultra-compact design fits tight battery boxes.
- High CCA (250) in a small package.
- Integrated BMS protects against over-discharge and overcharge.
Pros: Very high cranking power for its tiny size.; Easy installation with multiple terminal options.
Cons: Premium price; not for budget buyers.
7. Battery Tender BTL14A240C: Reliable Lithium
The Battery Tender BTL14A240C is a lithium battery from a well-known charger brand. We compared its specifications and it offers similar performance to other lithium options with 240 CCA. It is lightweight and fits many standard battery trays. The brand’s reputation for battery maintenance products adds confidence for those who already own a Battery Tender charger.
However, aggregated owner feedback reveals mixed long-term reliability, with some users experiencing failure after a few seasons. It also lacks a restart feature. Riders who need a proven, long-lasting battery may prefer the Antigravity or Yuasa. This battery is best for those who already have a Battery Tender charger and want a lightweight option for occasional use.
- 240 CCA for strong starts.
- Weighs only 2.6 lbs.
- Compatible with Battery Tender chargers for optimal maintenance.
Pros: Good cranking power from a trusted brand.; Lightweight and compact.
Cons: Some users report shorter lifespan than expected.
Frequently Asked Questions
What size battery do I need for my small motorcycle?
Battery size is determined by the physical dimensions and terminal configuration. Check your owner’s manual for the correct BCI group size (e.g., YTX12-BS). Measure your battery tray and compare with the battery’s dimensions. Many small bikes use group sizes like YTX9, YTX12, or YTX14.
Is a lithium battery worth the extra cost?
Lithium batteries offer significant weight savings, higher cranking power, and longer shelf life. They are worth it if you prioritize weight reduction, have a high-performance bike, or store your bike for long periods. However, they require a compatible charger and may not work well with old charging systems. For budget or vintage bikes, a quality AGM battery is often sufficient.
Can I use a regular car battery charger on a lithium motorcycle battery?
No, standard car chargers can damage lithium batteries. You need a charger specifically designed for lithium (LiFePO4) chemistry. Many lithium batteries have a built-in BMS that offers some protection, but using a lithium-specific charger is recommended for safety and battery life.
How long should a small motorcycle battery last?
AGM batteries typically last 3-5 years with proper maintenance (using a battery tender). Lithium batteries can last 5-7 years or more if not over-discharged. Factors like climate, charging system health, and usage patterns affect lifespan.
What does CCA mean and how much do I need?
CCA stands for Cold Cranking Amps, a measure of a battery’s ability to start an engine in cold temperatures. For small motorcycles (125cc-400cc), 120-200 CCA is usually sufficient. For larger singles or twins, 200-250 CCA is recommended. Higher CCA provides more reliable starts in cold weather.
Our Verdict
After researching and comparing specifications, industry standards, and owner feedback, our top pick is the Antigravity Batteries ATX-12 Restart for its restart feature, lightweight design, and strong performance. For those who prefer a traditional AGM battery, the Yuasa YTX12-BS is a reliable runner-up with proven durability.
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