Table of Contents
Introduction
The Arrma Granite is a popular 1/10 scale monster truck designed for bashing and high speed running. Converting it to a 3S LiPo battery unleashes maximum power from the brushless system. But with so many 3S LiPo options on the market, how do you select the ideal high performance battery?
In this guide, we’ll review the top recommended 3S LiPo batteries for the Granite based on capacity, discharge ratings, dimensions, and value. Whether you’re looking for longer run times or maximum power output, you’ll find the right LiPo match for your Granite. Let’s go over the advantages of 3S power along with factors to consider when choosing a battery.
Key Takeaways:
- 3S LiPo batteries provide 50% more voltage than stock 2S for huge acceleration gains
- Look for capacities between 5000mAh to 8000mAh to balance run time and weight
- Discharge rating of 25C+ ensures you can draw enough current under heavy load
- Measure dimensions to fit battery tray while still providing ample clearance
- Hard cased batteries add protection given the Granite’s exposure to crashes
- Balance cost, performance and C rating when selecting the ideal 3S LiPo
3S Advantages Over 2S Batteries
Here’s how switching to a 3S LiPo compares and improves over the stock 2S battery:
- 50% more voltage for more speed and power
- Improved throttle response and turbo acceleration
- Higher motor RPMs thanks to increased voltage
- Easy drop-in swap with included XT60 connector
- Take advantage of the brushless system’s full capability
The Arrma Granite is designed to handle a 3S LiPo battery without issue. Just install correctly to unlock the full power potential.
Top 3S LiPo Battery Picks
Gens Ace 5000mAh 50C 3S LiPo
- 5000mAh capacity provides good balance of runtime and power
- 50C constant discharge rating means huge 75A potential
- High quality Gens Ace cells with bulletproof reputation
- Hard case for protection in crashes
HRB 6500mAh 45C 3S LiPo
- Slightly more run time from 6500mAh capacity
- 45C discharge for big 100A bursts
- Soft case helps absorb shocks
- HRB makes reliable Lipos
Lumintek 8000mAh 35C 3S LiPo
- Massive 8000mAh capacity for extended running
- Lower C rating still produces huge 80A bursts
- Softer case but added protection foam
- Budget priced compared to capacity offered
What to Look for in a LiPo Battery
Beyond the top recommendations, keep these factors in mind when picking a LiPo battery for your Granite:
Dimensions – Measure your battery tray to ensure a proper fit. Allow some room for wiring. Granite can accommodate shorty and standard sized packs.
Capacity – 5000-8000mAh is ideal. Higher capacities provide longer run times but add weight.
Discharge Rating – Look for 25C continuous minimum, with bursts up to 50C. This ensures handling the amp draws of 3S power.
Balance Lead – Make sure the battery has an IC3 or EC3 balance connector to match the Granite ESC. Or use an adapter.
Hard Case – Granite’s exposure and bashing requires batteries with a protective hard case. Avoid soft packs.
Brand Reputation – Trusted brands like Gens Ace, Lumintek, and HRB manufacture reliable, high performing LiPo batteries.
Handling Practices for LiPo Batteries
Running 3S power levels requires extra diligence with handling and charging LiPo batteries:
- Use a LiPo capable charger and proper charge rates. Never over or under charge.
- Monitor pack temperature closely during runs. Stop immediately if excess heat builds up.
- Allow packs to fully cool between runs before charging to avoid damage.
- Never discharge below 3.3V per cell under load.
- Remove from vehicles after runs. Never store installed long term.
- Keep batteries in a fire retardant pouch or bag when charging.
- Periodically discharge packs to storage voltage when not in use for extended periods.
While powerful, treat 3S LiPos with proper care for safety. But done right, they deliver incredible speed and runtime!
Conclusion
A high quality 3S LiPo battery like the Gens Ace 5000mAh pack maximizes the Arrma Granite’s speed and acceleration potential thanks to 50% more voltage over stock 2S packs. Just be sure to select a capacity, discharge rating, and dimensions that best meet your runtime versus performance needs. Treat packs properly, and a 3S LiPo battery upgrade takes the Granite’s power to the next level!
FAQ
How much runtime does the Granite get from a 5000mAh 3S LiPo typically?
Around 15-20 minutes depending on terrain and driving style is common. The more full throttle and demanding the conditions, the less runtime. High capacity 7000-8000mAh packs extend runtimes closer to 30 minutes.
Do I need to upgrade the ESC or motor to run 3S power?
The Granite’s included electronics can handle 3S Lipo voltages up to 11.1V safely out of the box. Always follow recommended gearing guidelines. No upgrades needed unless significantly increasing power.
How can I increase runtimes without sacrificing performance?
Run a higher capacity (6000-8000mAh) pack combined with a slightly lower discharge rating like 35C. This maintains voltage under load while the extra mAh provides a runtime boost. Or carry spares.
What’s the maximum discharge rating I should look for in a LiPo battery?
50C is ideal for the Granite as that supports huge current bursts on 3S power. 25-35C works but offers less overhead. Look for battery ratings to exceed your vehicle’s peak current draw.
What should I do if the battery gets puffy or swollen?
Never use or attempt to recharge puffy/swollen LiPo batteries as they can catch fire. Discharge fully, then dispose of battery in a fire safe container or location per safety guidelines. Replace pack – swelling indicates damaged cells.
How can I extend the lifespan of my LiPo batteries?
Avoid fully draining, store them partially charged at around 3.8V per cell, prevent short circuits, charge at 0.5C-1C rate, balance charge, and avoid physical damage. Limit maximum discharge to 80% to minimize cell depletion.
Should I upgrade the Granite to 4S LiPo instead?
The Granite can handle a 4S upgrade with sufficient gearing changes, but 3S optimizes its out of box electronics without requiring major drivetrain modifications. Beginners benefit from slightly less radical powerband.
What connector does the Arrma Granite use for batteries?
The Granite comes equipped with an XT60 connector from the factory. Make sure to buy packs with XT60 or an adapter harness for other connectors like Dean’s. Avoid soldering connectors.
What are the main advantages of hard case vs soft case LiPo batteries?
Hard cased LiPo packs provide puncture resistance and structure integrity for rough riding and crashes which are more likely to damage exposed soft packs. Always secure LiPos firmly and minimize chassis movement.