10 Best LiPo Batteries for Rock Crawling

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Introduction

Lithium polymer (LiPo) batteries have become the preferred power source for remote control rock crawlers thanks to their combination of high power delivery and light weight. Choosing the right LiPo battery is key to maximizing your RC crawler’s capabilities to conquer obstacles, climb steep rocks, and traverse tough terrain.

This guide will explore the key factors to consider when selecting LiPo batteries for RC crawlers and provide specific battery recommendations across a range of capacities, C ratings, and budgets. Whether you are looking to increase runtime, improve slow speed torque, or upgrade an RTR crawler, using the right LiPo pack makes a major difference.

Key Takeaways:

  • Look for high capacity batteries around 5000-7000mAh for extended runtimes
  • 30-120C discharge ratings deliver optimal balance of high output and low internal resistance
  • 2S and 3S configurations provide enough voltage for capable brushless systems
  • Hardcase and softcase options, both work well for crawlers
  • Always use a balance charger and proper storage practices to maximize LiPo lifespan
  • Added features like JST-XH balance plugs and battery straps are convenient bonuses

LiPo Advantages for Rock Crawling

LiPo batteries have cemented themselves as the power source of choice for remote control crawlers and scales. Here are some of the key advantages LiPo batteries bring:

  • Very high power density provides excellent low-end torque
  • Low internal resistance allows high discharge currents
  • Light weight is crucial for technical terrain maneuvers
  • Balance charging helps maximize cell life
  • Huge range of capacities, sizes and C ratings to suit any rig
  • Output voltage can be tuned through cell counts higher or lower than NiMH

Rechargeable LiPo packs give RC crawlers the best combination of driving power and run time while minimizing weight. Let’s look at how to select the ideal crawler LiPo.

Factors to Consider When Choosing LiPo Batteries

Battery Capacity

Capacity determines how long a full charge will last. Look for crawler LiPo packs in the 5000-7000mAh range to extend runtimes. Larger mAh ratings equal longer runs but also increase size and weight. High capacity 10,000+mAh packs best suit giant crawlers.

Voltage and Cell Configuration

LiPo cells are 3.7V nominal each. Most crawler packs come in 2S (7.4V) or 3S (11.1V) configurations to give adequate voltage for crawler electronics. Make sure your ESC and brushless motor system is rated for your desired LiPo cell count to avoid issues.

C Rating and Maximum Discharge

The C rating depicts how much current a LiPo can provide continuously, multiplied by capacity. So a 5000mAh battery with 100C constant discharge could supply 100 x 5 = 500 amps continuously. High discharge ratings improve low speed torque. 30-120C ratings suit most crawlers well depending on motor.

Physical Size and Dimensions

Larger LiPo dimensions provide more room for capacity, but make finding space in crawler battery trays tricky. Measure your rig’s battery compartment carefully. Brick packs around 130 x 47 x 47mm are common sizes to fit many chassis.

Connectors and Wiring

Look for LiPo packs with discharge leads and connectors that match your ESC. JST-XH, Deans, EC3 are common plugs. Ensure any battery you choose has a balance plug for proper charging. Some packs include charging leads too.

Hardcase vs Softcase Construction

Hardcase LiPo packs feature rigid composite shells which resist punctures and crashes well. But softcase LiPos offer some flex and use spacers to protect cells instead. Both work, come down to whether you prioritize crush protection or squeezing into tight spaces.

Price

As one of the most vital components, avoiding cheap low quality LiPo packs is wise to protect your crawler investment. But very high capacity and high C batteries get expensive. Look for that sweet spot between $50-$100 for a good balance.

10 Best LiPo Batteries for RC Rock Crawlers

Taking all the above factors into account, these LiPo packs represent a great combination of performance, compatibility, and value for any RC rock crawler build.

SMC Racing 8000mAh 7.4V 2S Hardcase LiPo

  • Huge 8000mAh capacity for extreme runtime
  • 60C constant, 120 burst discharge rating
  • Hardcase with strong mounting tabs
  • Charging/discharge lead included
  • JST-XH balance connector

Lumintek Climb Spec 70C 2S 7200mAh Hardcase LiPo

  • Massive 7200mAh capacity
  • Great balance of capacity and 70C output
  • Durable hardcase with mounting strap
  • JST-XH balance plug for easy charging
  • Reasonable price under $75

Ovonic 5500mAh 3S 50C Softcase LiPo

  • 3S voltage well suited for many brushless crawlers
  • JST-XH balancer connector
  • 16AWG silicone discharge wire
  • Softcase design helps fit tight spaces
  • Impressive value under $50

Venom 5000mAh 3S 14.8V LiPo Battery

  • Tried and tested 3S LiPo for scale crawlers
  • 30C constant, 60C burst discharge rating
  • Integrated low voltage safety cutoff
  • Softcase exterior with mesh spacer protection
  • Great balance of performance and price

Gens Ace 5000mAh 2S 7.4V 50C LiPo Battery

  • Gens Ace produces top quality LiPo packs
  • 5000mAh capacity for ample runtime
  • 50C constant/100C burst discharge rating
  • Softcase exterior with mounting strap
  • Highly affordable price under $40

CNHL Black Series 8000mAh 2S LiPo

  • Impressive 8000mAh capacity in 2S
  • Burst discharge up to 150C
  • Durable hardcase exterior
  • Dual JST-XH balance ports for redundancy
  • CNHL batteries deliver excellent value

React 6500mAh 2S 100C LiPo Battery

  • Great mid-range 6500mAh capacity
  • 100C constant/200C burst rating
  • Pre-soldered XT90 discharge plug
  • JST-XH balance plug with 12AWG wire
  • Quality React LiPos for under $60

Zeee 11000mAh 3S 15C LiPo Battery

  • Massive 11000mAh capacity for all day runtime
  • 15C constant discharge rating
  • Huge brick pack but high capacity for giant crawlers
  • Integrated balance plug for charger compatibility
  • Great bargain priced high capacity LiPo

PowerHobby High Amp 20C 2S Hardcase LiPo

  • Optimized 50-60C constant discharge for crawling
  • Premium graphene LiPo technology
  • Heavy-duty hardcase with mounting tabs
  • Pre-soldered XT90 output plug
  • Advanced LiPo from respected PowerHobby brand

ProgressiveRC Juice Pack 2S LiPo Battery

  • Pricey but high quality LiPo pack
  • 4000mAh capacity and 60C rating
  • Built-in voltage meter for health monitoring
  • Durable hardcase with strap
  • Trusted ProgressiveRC brand with US support

FAQ

What C rating is best for crawling?

30-60C constant discharge ratings are ideal for most crawlers to balance power and battery life. Peak burst around 120C provides headroom for extreme loads. High C ratings over 100C minimize voltage sag.

Should I get hardcase or softcase LiPos?

For ultimate durability, hardcase LiPos are great for protecting cells from crashes. But softcase packs allow some flex and may fit tighter spaces if needed. Really comes down to your protection priorities.

Do LiPo batteries require special chargers?

Always use a balance charger designed for LiPo batteries to maximize cell life and safety. Balance charging ensures cells stay matched. Never use a NiMH charger.

How long do LiPo batteries last for RC use?

With proper use and storage, quality LiPo packs can last 2-3 years or 300-500 charge cycles before capacity drops significantly. Heat and deep discharges shorten overall lifespan.

What voltage LiPo battery is best for crawlers?

Most crawlers run great on 2S 7.4V packs. 3S adds more power for extreme crawling at added cost. For big, heavy rigs with brushless systems, 3S provides more torque to turn oversize tires.

Final Thoughts

Choosing the right LiPo battery is one of the most important decisions for RC crawlers. Prioritize high capacity to extend runtimes and sufficient C ratings to deliver strong low-end torque. Pair power output and physical size to your rig’s capabilities and chassis space.

Follow LiPo safety best practices and use balance charging to maximize battery lifespan. With a quality LiPo pack matched to your electronics and terrain demands, your crawler will conquer mountains!