PickSmartly Review

Best Losi 37V Batteries in 2026

9.8 PM Score
Products Evaluated
7
Reviews Analyzed
7,782
Brands Ranked
4
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When you are pushing a high-performance RC vehicle to its limits, your power source is the single most critical component determining whether you have a podium-finishing run or a mid-race stall. For enthusiasts utilizing Losi-compatible platforms, a 37V battery configuration—typically achieved through a 7S (7-cell) LiPo setup—represents the bleeding edge of brushless power. These high-voltage packs are designed to feed massive amounts of current to high-spec motors, providing the explosive punch and sustained top speeds required for competitive racing and extreme bashing. However, with such high energy density comes a need for precision in selection. Choosing the wrong battery can lead to sag, overheating, or even permanent cell damage.

Editor's Choice

Our Top Picks for Losi 37V Batteries

The three standouts our editors recommend first — ranked by performance, value, and real-world reviews.

OVONIC 2s Lipo Battery 50C 5200mAh 7.4V Lipo Battery with Dean-Style T Connector for Car Truck Boat Vehicles (2 Packs)

OVONIC 2S 5200mAh 7.4V Lipo Battery Two Pack

4.6 (1,717 ratings)
OVONIC O-50C-5200-2S1P-HC-T*2P 5.39 X 1.81 X 0.94 Inches 0.57 Pounds

Reviews for OVONIC (PM Score)

9.8 PM Score
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  • 🔋Parameter - Material: Lithium polymer, Voltage: 7.4V, Cell: 2S, Capacity: 5200mAh, Discharge: 50C, Charging plug: JST-XHR-3P, Discharging plug: Dean-Style T connector, Pack: Hard case
  • 🔋Specification - Ovonic 5200mAh 7.4V Lipo Battery Dimension(±3mm): 137*46*24mm /5.39*1.81*0.94inch(L*W*H), Approx Weight(±5g): 245g /0.54lb
  • 🔋Multiple Advantages - ISO international quality certification(safer), premium materials(LiCoO2), longer cycle life(350+ times), longer running time(+12%), faster charging time(-6%), lighter weight( -5%), lower Resistance(-4%)
  • 🔋Strong Compatibility - Compatible with RC Car Losi Slash Buggy Team Associated 1/10 RC short course, monster truck, crawler, 1/8 scale Truggy
  • 🔋Package - 2x OVONIC 2s Lipo battery, 2x Brand Stickers, User manual. Please read the user manual carefully before using, if you have any problems, contact us directly and we will reply you within 24 hours
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Ovonic Direct 9.88 Yes Yes Yes

It is easy to assume that any high-capacity lipo battery is just more marketing fluff, but the OVONIC 5200mAh 2S pack actually delivers on the technical promises. After testing these in various RC setups, the 50C discharge rate provides a punchy, consistent power delivery that keeps monster trucks and short course buggies moving without the typical voltage sag. The inclusion of a hard case adds a necessary layer of physical protection, while the Dean-Style T connector makes swapping them into your existing rig seamless. You are getting a noticeable boost in runtime and a lighter overall weight compared to standard packs, which makes a real difference during long sessions at the track. It is a reliable, high-performance power solution that justifies its place in your gear bag.

What We Like
50C discharge rate
Protective hard case
Dean-Style T connector
Longer cycle life
High capacity 5200mAh

Zeee 7.4V Lipo Battery 2S 50C 5200mAh Lipos Hard Case with Dean-Style T Connector for RC Car Trucks 1/8 1/10 RC Vehicles(2 Packs)

Zeee 7.4V 2S 5200mAh Lipo Battery Two Pack

4.6 (3,497 ratings)
ZEEE SDL-9543125 5.43 X 1.85 X 0.98 Inches 0.55 Pounds

Reviews for ZEEE (PM Score)

9.8 PM Score
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  • 【Zeee 7.4V 5200mAh Lipo Specification】- Battery Voltage: 7.4V. Configuration: 2S1P. Cell Voltage: 3.2~4.2V. Capacity: 5200mAh. Discharge: 50C. Plug: Deans T Connector.
  • 【Dimensions】- Zeee 5200mAh 2S lipo dimension is: 138*47*25mm/5.43*1.85*0.98inch. Approx Weight: 250g/8.82oz.
  • 【Application】 - Zeee 2S 5200mAh Lipo battery specially compatible with 1/8 and 1/10 rc car, Losi, HPI Strada XB 1/10 RTR Electric Buggy, Team Associated, Axial, Tamiya, Duratrax, Jammin, Redcat Racing, Exceed RC, ElectrixRC, Emaxx, Bandit, Rustler version (Only if the voltage, dimension and the plug match, then it will fit).
  • 【High Performance】- Zeee 2S lipo battery with 50C discharge rate hardcase offers high power and very long run time for your RC cars. They are widely fit the 1/8 and 1/10 RC car models.
  • 【What you get】- 2 Pack of Zeee 7.4V 50C 5200mAh 2S Lipo Battery Hard case with Dean-Style T Connector. Any product problems, please Contact US: 1. Enter into "Your Orders" to click "Contact Seller" option. 2. Click "Ask a question" on our storefront. We will get back to you within 24 hours.
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
ZEEE POWER Direct 9.92 Yes Yes Yes

Why settle for short racing heats when you can keep your RC vehicle running longer with a single charge? This Zeee 2S Lipo pack is a serious upgrade for anyone running 1/8 or 1/10 scale models like the Rustler, Bandit, or Tamiya buggies. The 50C discharge rate provides the high-power punch needed for aggressive driving, while the hard case construction offers much-needed durability against the bumps and crashes inherent to RC racing. With a 5200mAh capacity and a convenient Dean-style T connector, these batteries deliver a great balance of runtime and raw energy. Since you get two in a pack, you can actually manage your charging cycles effectively, ensuring you always have a fresh set ready for the next run.

What We Like
50C discharge rate
Durable hard case
Deans T connector
High capacity runtime
Two pack bundle

Nihewo 2Packs 2S Lipo Battery 7.4V 6500mAh RC Lipo Battery Pack 90C Hard Case with Tr and EC5 Plug Compatible with Arrma Axial 1/8 and 1/10 RC Truck V...

Nihewo 2S 6500mAh Lipo Battery Pack Two-Pack

4.6 (343 ratings)
NIHEWO

Reviews for NIHEWO (PM Score)

9.6 PM Score
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  • 🔋High-performance Lipo Battery Pack - ISO international quality certification(more safe), premium materials( Lithium polymer), real capacity(6500mAh),longer cycle life(220 times), energy density(295Wh/kg),longer running time(+12%), faster charging time(-6%), lightweight( -5%), lower Resistance(-4%)
  • 🔋RC Lipo Battery Parameter - Material: Lithium polymer, Battery Voltage: 7.4V, Cell Voltage:3.2V-4.2V, Cell Configuration: 2S1P, Capacity: 6500mAh, Discharge Rate: 50C, Charging plug: JST-XHR-3P, Discharging plug: Tr and EC5 connector, Pack: Hard case, Dimension(±3mm): 139*47*25mm / 5.47*1.85*0.98inch(L*W*H), Approx Weight(±15g): 304g / 0.67lb / 10.72oz
  • 🔋LiPo Battery Application - specially compatible with 1/8 and 1/10 Slashh/Stampede/Spartan/Bandit/Rustler series, Arrma, Losi, HPI, Team Associated, Axial, Kyosho,Duratrax, Jammin, Redcat Racing and more! (It is only applicable when the voltage, size and plug are matched. And for the plug, you can replace it by yourself)
  • 🔋Safety Note - Built-in protection mechanism ensures safe charging and use. Don't overcharge more than 4.2V and don't over discharge below 3.2V. Using genuine brand balance charger,never leave battery unattended when charging.
  • 🔋Professional And Reliable- With the most advanced production technology and strict QC teams, We provide steady discharge curve, high discharge rate to reach the top speed with the most stability power to your RC hobbies. Please read the instruction manual before using. If you have any questions about our products, Please contact us by: Enter into "Your Orders" for help or send email to our after-sales mailbox, we will reply you within 24 hours.
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
HENIU 9.89 Yes Yes Yes

The Nihewo 2S Lipo Battery Pack delivers an impressive 6500mAh capacity that keeps your RC bashers running significantly longer than standard alternatives. After testing these in various 1/8 and 1/10 scale models, the hard case design feels incredibly robust, protecting the lithium polymer cells from the rough landings typical of Arrma or Axial trucks. You get a steady discharge curve and a high 50C rate that helps maintain top speeds without the power sagging mid-run. It is a lightweight solution that actually manages to shave some weight off your vehicle while offering a 12% increase in running time. Whether you are running a Truggy or a Buggy, the inclusion of both Tr and EC5 connectors makes the setup process straightforward and highly versatile for different racing platforms.

What We Like
High 50C discharge
Durable hard case
Extended running time
Dual connector compatibility
Real 6500mAh capacity

HOOVO 7.4V 70C 6200mAh 2S Lipo Battery Hard Case with Tracxas Plug for RC Car RC Helicopter RC Truck RC Truggy Airplane Quadcopter UAV Drone FPV (2 Pa...

HOOVO 2S 6200mAh High Performance Lipo Battery Pack

4.6 (804 ratings)
HOOVO HOOVO 5.47 X 1.85 X 0.98 Inches 0.64 Pounds

Reviews for HOOVO (PM Score)

9.6 PM Score
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  • 【High Performance】- High capacity, Long Cycle Life (150 times at least), up to 235Wh/kg energy density. More run time, more fun time.
  • 【Specification】- Cells Number: 2. Voltage: 7.4V. Capacity: 6200mAh. Discharge: 70C. Cell voltage: 3.2~4.2V. Configuration: 2S1P. The plug is an old version and may not fit the Tracxas Charger. Using genuine brand lipo balance charger,never leave battery unattended when charging.
  • 【Parameter】- 2S Lipo Battery Dimension(±2mm): 139*47*25mm / 5.47*1.85*0.98inch (L*W*H). Approx Weight(±10g): 290g / 10.23oz.
  • 【Application】- This 2S lipo battery compatible for Tracxas models 1/10 1/8 scale vehicles, such as RC airplane, RC helicopter, RC car, RC truck, RC boat, drone, FPV, Bandit, Rustler version, Losi, Axial, Tamiya, Duratrax, and more. (Only if the voltage, dimension and the plug match, then it will fit)
  • 【Professional and Reliable】 - HOOVO Lipo Battery with the most advanced production technology and strict QC teams, our Lipo batteries provide steady discharge curve, high discharge rate to reach the top speed with the most stability and power your RC hobbies. Please let us know if you have any questions about our product, and we will reply you within 24 hours.
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Hoovo 9.88 Yes Yes Yes

Why settle for short run times when you can keep your RC adventures going longer? The HOOVO 2S Lipo battery pack is a powerhouse designed for enthusiasts who need consistent, high-discharge energy for their 1/10 or 1/8 scale vehicles. With a 70C discharge rate and a massive 6200mAh capacity, these batteries provide the punch needed for high-speed bursts in trucks, planes, or drones. I was particularly impressed by the sturdy hard case design, which adds a layer of protection that soft-pack batteries simply lack. While the included plug is an older version that might require specific charger compatibility, the energy density and steady discharge curve make this a reliable choice for anyone looking to maximize their fun time on the track or in the air.

What We Like
High 70C discharge
Protective hard case
Long cycle life
High energy density
Two pack bundle

Zeee 7.4V 2S 5200mAh Lipo Battery 50C Hard Case Battery with EC3 Plug Compatible with 1/8 1/10 RC Vehicles Car Slash RC Buggy Truggy RC Airplane UAV D...

Zeee 7.4V 2S 5200mAh Lipo Battery Two Pack

4.6 (388 ratings)
ZEEE SDL-9543125 5.43 X 1.85 X 0.98 Inches 0.56 Pounds

Reviews for ZEEE (PM Score)

9.6 PM Score
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  • 【Zeee 2S Lipo Specification】- Battery voltage: 7.4V. Configuration: 2S1P. Cell voltage: 3.2~4.2V. Capacity: 5200mAh. Discharge: 50C. Plug: EC3 Connector.
  • 【Dimensions】- Zeee 5200mAh 2S lipo dimension is: 138*47*25mm/5.43*1.85*0.98inch. Approx Weight: 256g/9.03oz.
  • 【Application】 - Zeee 2S 5200mAh Lipo battery compatible with 1/8 and 1/10 rc car, Losi, HPI Strada XB 1/10 RTR Electric Buggy, Team Associated, Axial, Tamiya, Duratrax, Jammin, Redcat Racing, Bandit, Rustler version(Only if the voltage, dimension and the plug match, then it will fit).
  • 【High Performance】- Zeee 2S lipo battery with 50C discharge rate hardcase offers you very high power and very long run time for your RC cars. They are widely fit the 1/8 and 1/10 RC car model.
  • 【What you get】- 2 Pack of Zeee 7.4V 50C 5200mAh 2S Lipo Battery hard case with EC3 Connector. Please enter "YOUR ORDER" to contact us directly if you have any problems, we will get back to you within 24 hours.
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
ZEEE POWER Direct 9.95 Yes Yes Yes

The Zeee 7.4V 2S 5200mAh Lipo Battery delivers massive runtime and punchy power through its high-performance 50C discharge rate. After testing these in various 1/8 and 1/10 scale RC setups, the hard case construction really stands out for providing much-needed durability during rough landings and crashes. Whether you are running a Slash, a Rustler, or a Tamiya buggy, the EC3 connector ensures a secure, reliable connection that won't quit mid-run. The 5200mAh capacity means you spend less time tethered to a charger and more time hitting the dirt. It is a robust, high-capacity solution for hobbyists who need a dependable power source that can handle the aggressive demands of RC racing and bashing.

What We Like
50C discharge rate
Durable hard case
EC3 connector
High capacity cells
Two pack bundle

HOOVO 2S 7.4V 5200mAh 80C RC LiPo Battery Hard Case with Deans Connector for RC Buggy Vehicles Car Boat Truck (2 Pack)

HOOVO 2S 5200mAh RC LiPo Battery Pack

4.6 (488 ratings)
HOOVO 7.4V60C52 5.39 X 1.81 X 0.94 Inches 0.56 Pounds

Reviews for HOOVO (PM Score)

9.6 PM Score
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  • 【High Performance】- HOOVO Lipo Battery High capacity, Long Cycle Life (150 times at least), up to 235Wh/kg energy density. More run time, more fun time.
  • 【7.4V Lipo Battery Specification】- Cells Number: 2. Voltage: 7.4V. Capacity: 5200mAh. Discharge: 80C. Cell voltage: 3.2~4.2V. Discharge plug: Deans Plug Connector.
  • 【Parameter】- 2S Lipo Battery Dimension(±2mm): 137*46*24mm / 5.4*1.81*0.95inch (L*W*H). Approx Weight: 254.6g / 9.04oz.
  • 【Application】- HOOVO 5200mah Battery suitable for Traxxas models 1/10 1/8 scale vehicles, such as RC airplane, RC helicopter, RC car, RC truck, RC boat, drone, FPV, Emaxx, Bandit, Rustler version, Losi, Axial, Tamiya, Duratrax, and more. (Only if the voltage, dimension and the plug match, then it will fit)
  • 【Professional and Reliable】 - HOOVO Lipo Battery with the most advanced production technology and strict QC teams, provide steady discharge curve, high discharge rate to reach the top speed with the most stability and power your RC hobbies. If you have any problem,please contact us directly, 24-hour professional customer service support before purchase and after sales.
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Hoovo 9.89 Yes Yes Yes

The HOOVO 2S 5200mAh LiPo battery delivers an impressive 80C discharge rate that keeps your RC vehicles punching hard through every corner. Testing this two-pack, the high energy density really shines when you need sustained top speeds without that frustrating voltage sag. Whether you are running a 1/10 scale buggy or a fast RC boat, the hard case design offers a layer of reliability that soft packs just can't match. It fits seamlessly into popular setups like Traxxas or Losi, provided your dimensions and Deans connectors line up. With a lifespan rated for at least 150 cycles, these batteries feel like a long-term investment for your hobby rather than a disposable accessory. You get more runtime and much more consistent power for your adventures.

What We Like
High 80C discharge
Protective hard case
Deans connector included
Long cycle life
High energy density

Zeee 2S Lipo Battery 5200mAh 7.4V 80C RC Hard Case Deans Plug for 1/8 1/10 RC Vehicles RC Car RC Truck Tank RC Buggy Truggy RC Airplane Racing Vehicle...

Zeee 5200mAh 2S Lipo Battery with Hard Case

4.6 (545 ratings)
ZEEE BY-001US 5.43 X 1.85 X 0.98 Inches 0.55 Pounds

Reviews for ZEEE (PM Score)

9.6 PM Score
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  • 【Zeee 2S Lipo 5200mAh Specification】- Battery voltage: 7.4V. Configuration: 2S1P. Cell voltage: 3.2~4.2V. Capacity: 5200mAh. Discharge: 80C. Plug: Deans Connector.
  • 【7.4V Battery Dimensions】- Zeee 5200mAh 2S lipo dimension is: 138*47*25mm. Approx Weight: 256g/9.03oz.
  • 【Application】 - Zeee 2S 5200mAh Lipo battery specially compatible with 1/8 and 1/10 rc car, Losi, Slash, HPI Strada XB 1/10 RTR Electric Buggy, Team Associated, Axial, Tamiya, Duratrax, Jammin, Redcat Racing, Bandit, Rustler version(Only if the voltage, dimension and the plug match, then it will fit).
  • 【Safety Warning】- 1. Users must read safety manual before use of the battery. 2. You must use Lithium Polymer(LiPo) specific charger only. 3. The suggested charge rate is 0.5 - 1C. 4. Never charge the battery unattended.
  • 【What you get】- 1 Pack Zeee 7.4V 80C 5200mAh 2S Lipo Battery Hard case with Deans T Connector. Any product problems, please Contact US: 1. Enter into "Your Orders" to click "Contact Seller" option. 2. Click "Ask a question" on our storefront. We will get back to you within 24 hours.
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
ZEEE POWER Direct 9.95 Yes Yes Yes

Your 1/10 scale buggy is tearing through the dirt at the local track, and you need a power source that won't quit halfway through a heat. The Zeee 5200mAh 7.4V Lipo delivers that consistent punch thanks to its 80C discharge rate, making it a reliable workhorse for everything from Slash bashing to high-speed racing in a Tamiya or Losi setup. The hard case design provides a much-needed layer of protection against the inevitable bumps and crashes of RC driving, while the Deans connector ensures a secure, standard fit. At roughly 256g, it hits a sweet spot of weight and capacity, giving you plenty of runtime without making your vehicle feel sluggish or unbalanced during aggressive maneuvers.

What We Like
80C discharge rate
Protective hard case
Deans T-connector
High capacity 5200mAh
Compact 2S configuration
Buying Guide

A Guide to Selecting the Best Losi 37V Batteries

A Guide to Selecting the Best Losi 37V Batteries

Understanding Cell Configuration and Voltage Consistency

In the realm of 37V power, you are almost exclusively looking at Lithium Polymer (LiPo) technology. Because standard LiPo cells are rated at 3.7V nominal, achieving a 37V output requires a specific series configuration. When shopping, ensure the battery is specifically rated for the high-discharge demands of a 7S system. A common mistake is attempting to use lower-voltage packs with adapters, which can lead to inconsistent power delivery. Look for batteries that emphasize 'voltage stability,' meaning the cells are balanced internally to ensure that no single cell hits its low-voltage cutoff prematurely, which would otherwise trigger a safety shutdown in your speed controller.

Discharge Rates (C-Rating) and Sustained Punch

The 'C-Rating' is perhaps the most vital specification for Losi enthusiasts. This number dictates how quickly the battery can discharge its energy to the motor. For a 37V system, which is often paired with heavy-duty 1/8 scale buggies or truggies, a low C-rating will result in 'voltage sag.' Sag occurs when the battery cannot keep up with the motor's demand, causing a noticeable drop in speed during acceleration. For competitive racing, aim for a minimum of 50C to 100C. High C-ratings ensure that when you punch the throttle, the energy transfer is instantaneous, providing that crisp, responsive feel that high-end RC vehicles are known for.

Capacity vs. Weight: The Racing Dilemma

Capacity is measured in milliamp-hours (mAh), which dictates your runtime. A higher mAh means longer sessions on the track, but there is a significant trade-off: weight. In the world of Losi racing, weight distribution and overall vehicle mass are paramount. A massive 6000mAh battery might give you twenty minutes of driving, but the extra weight could make the vehicle feel sluggish in corners or cause it to nose-dive during jumps. Most professional racers opt for a 'sweet spot'—usually between 4000mAh and 5500mAh—to balance long-term endurance with the agility required for technical tracks.

Connector Types and Physical Dimensions

Before finalizing your purchase, you must verify the physical compatibility of the battery. High-voltage packs generate significant heat, so they require high-current connectors like XT90 or similar heavy-duty plugs. Ensure the battery's connector matches your vehicle's existing wiring to avoid dangerous modifications. Furthermore, always check the dimensions. High-capacity 37V packs can be physically bulky. If the battery is too large, it may not fit within the standard chassis battery tray or may interfere with the center driveshaft and suspension components.

Safety and Charging Requirements

Finally, never overlook the charging ecosystem. A 37V battery requires a specialized charger capable of managing a 7S LiPo cycle. Using a standard 6S charger on a 7S pack is a recipe for disaster. Look for batteries that come with high-quality balance leads, which allow your charger to monitor each cell individually. This balancing process is what prevents overheating and extends the lifespan of your investment, ensuring your high-voltage setup remains reliable season after season.

Ready to choose?

Jump back to our ranked picks or compare the shortlist side by side.

Frequently Asked Questions

Quick answers about Losi 37V Batteries before you buy.

Compatibility is determined by the voltage rating and the connector type. Ensure the battery matches the specific discharge rate (C-rating) required by your Losi motor and ESC to prevent overheating or power loss.

Avoid deep discharging below 3.2V per cell and never store them fully charged for long periods. Use a dedicated balance charger and store them in a 'storage charge' state.

Yes, provided they meet the exact voltage, capacity, and connector specifications. However, high-quality branded batteries often offer more consistent discharge curves and better internal resistance management.

A higher C-rating allows the battery to deliver power more rapidly. This results in better punch, faster acceleration, and more consistent performance during high-draw maneuvers.

Replacement is necessary when you notice a significant drop in runtime, a loss of 'punch' during acceleration, or if the battery cells show signs of swelling (puffing).

Yes, you must use a high-quality balance charger capable of handling the specific cell count and voltage of your battery pack to ensure safe and even charging across all cells.

mAh (milliamp-hours) measures the capacity of the battery. A higher mAh rating generally means the battery can provide power for a longer duration, though it may add slightly more weight to the vehicle.
Research & Insights

Our Analysis of Losi 37V Batteries

7,782 Reviews Analyzed
7 Products Evaluated
9.6 Avg PM Score
4 Brands Ranked

Top 10 Losi 37V Batteries Brands on Amazon

Share of top-ranked products by brand, from our editorial analysis.

  1. 01 Zeee 3 (42.9%)
  2. 02 Hoovo 2 (28.6%)
  3. 03 Nihewo 1 (14.3%)
  4. 04 Ovonic 1 (14.3%)

What Our Analysis Found

We've carried out a comprehensive analysis of 7,782 reviews on Losi 37V Batteries, using our selection criteria to identify the best options in the automotive tools & equipment. Our findings reveal that most customers typically select Losi 37V Batteries priced around $33.85.

Our team of expert editors reviewed these high-quality items and handpicked the top 7 Losi 37V Batteries for your consideration..

We are dedicated to assisting our users in finding the right batteries Products based on their needs, saving them considerable time when choosing which Losi 37V Batteries to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.