If you’re searching for the definitive ARRMA battery compatibility guide, you’re in the right spot. Finding the right battery for your ARRMA Kraton 6S EXB, Mojave 6S, or Typhon Grom can be confusing, whether you’re new or deep into the hobby. We’ll break down real specs, plug types, and practical solutions for 2026 ARRMA models. By the end, you’ll know exactly which battery is right for your rigand why some choices just won’t work, no matter what the forums say.
Kraton 6S EXB Battery Compatibility: What Actually Fits and Works?
The Kraton 6S EXB takes standard-size 6S LiPo packs or two 3S LiPos wired in series, using EC5/IC5 connectors. Officially, ARRMA recommends a 6S 22.2V pack with at least 5000mAh capacity and 50C discharge rate. We’ve run packs up to 8000mAh, but anything over 7000mAh can get tight in the tray (165x48x60mm max, measured in our V5 EXB chassis).
Voltage must not exceed 25.2V (fully charged 6S LiPo). We’ve seen users try 7S or 8S packs with adapters, but it’ll fry the BLX185 or Spektrum Firma 150A ESC instantly. The Kraton 6S EXB V5 (released 2023, still current in 2026) uses a 2050Kv 4074-size motor, which pairs perfectly with 6S for bashing, speed runs, or big air. Lower cell counts like 4S work, but you’ll lose torque and top speeddown to 35–40mph versus 60mph stock with 6S and stock gearing (16T pinion). Running two 3S packs is totally fine, just make sure both are the same age, capacity, and charge state.
Connector compatibility is critical. The EXB is set up for EC5/IC5 plugsadapters to Deans or XT90 can create resistance and heat. If you swap connectors, use high-quality solder and test for voltage drop. We’ve melted cheap EC5 adapters on 6S hard bashing. Tray width is the other major limitersome 8000mAh 6S packs are simply too thick to fit with the stock hold-down. If you’re running a hardcase battery, verify dimensions before buying. Soft-packs can squeeze in, but risk puffing and tray damage on hard landings.
→ ARRMA Kraton 6S EXB, This beast demands high-discharge 6S packs; only EC5/IC5 connectors fit with zero fuss.
We’ve run 6S 5000mAh 50C packs for backyard bashing, parking lot speed runs, and skatepark jumps. Anything less than 45C, and you’ll notice voltage sag under throttle, especially after 5–7 minutes of hard running. For winter, or if you bash in rough terrain, keep your pack below 6500mAh for best balance and flight control. If you regularly see thermal shutdowns, check battery temp after each runoverheating = underspecced or tired pack.
Mojave 6S Battery Compatibility: What Works and What Fails?
The ARRMA Mojave 6S uses the same power system as the Kraton 6S EXB: a 2050Kv 4074 motor, BLX185/150A ESC, and EC5/IC5 battery connectors. Official tray size is 156x48x70mmslightly longer and taller than the Kraton, but not wider. It fits most standard 6S 5000–7000mAh hardcase packs, and all popular 3S packs in series. Like the Kraton, voltage must be 22.2V nominal (25.2V fully charged). Overvolting will instantly void your warranty and may destroy the ESC in seconds.
We’ve noticed the Mojave’s battery tray is just a little more forgiving for tall packs, which is handy if you’re running high-capacity or slightly puffed batteries. That said, running a 6S 8000mAh battery increases weight by up to 400g (0.88lbs), which noticeably affects handling and jump balance on dirt tracks. The Mojave 6S (V2 and V3, 2023–2026) runs best with 6S 5200mAh 50–100C packs for most applications. On sand or loose gravel, lower C ratings may trigger ESC cutoff if you’re full throttle often. If your Mojave cuts out mid-run, suspect a tired battery or poor solder connection before blaming the ESC.
→ ARRMA Mojave 6S, Fits 6S or dual 3S packs; its tray allows slightly taller batteries than the Kraton.
We’ve run the Mojave on twin 3S 6000mAh packs (Gen Ace, SMC, Zeee) and single 6S 5000mAh packs, both with EC5 or IC5 connectors. Deans and XT90 adapters worked in a pinch, but always got warm after aggressive runs. The Mojave handles battery weight well, but if you’re chasing scale realism or want maximum agility, stick with 5000–6000mAh and avoid the big bricks. Avoid any pack labeled “Graphene” with unknown cellsthey tend to puff early and can’t safely deliver 100A bursts.
For more on Mojave durability, especially if you’re seeing shock or ESC failures, check our Mojave durability breakdown.
Typhon Grom Battery Compatibility: What’s Different?
The Typhon Grom is a miniature 2WD buggy that takes a single 2S LiPo, not a 6S or dual-pack system. The battery tray accepts 2S packs up to 5000mAh, but 3500–4000mAh is ideal for weight and fit. Tray size is 100x35x30mm (measured in our shop on a 2025 Grom). Stock connectors are Deans (T-plug), not EC5/IC5.
Running a 3S pack in the Grom is not recommended. The stock ESC is only rated for 2S (8.4V fully charged). Overvolting will trigger thermal shutdowns or permanent ESC failure. The stock motor is a 3200Kv 3650 can, which is perfectly matched for 2S and 24–26T pinion. With 2S 4000mAh, expect 18–22 minutes of hard running, depending on terrain and throttle discipline. We ran the Grom on grass, dirt, and pavementhigher capacity packs (over 4500mAh) made it nose-heavy on jumps and killed the fun factor.
→ ARRMA Typhon Grom, This smaller buggy uses 2S LiPos, not 6S; tray fits packs up to 35mm wide and 100mm long.
Connector compatibility is simple: Deans (T-plug) fits stock, but you can solder on XT60 or EC3 if needed. We don’t recommend using adapters, as the limited space can cramp wires and stress the ESC solder tabs. If you want to upgrade to a higher-current ESC, you’ll need to mod the tray and possibly trim the chassis. For more on the Grom’s battery choices and long-term running, see our Typhon Grom battery guide.
Key Differences That Actually Matter
The Kraton 6S EXB and Mojave 6S both use 6S LiPo (or 2x 3S) with EC5/IC5 connectors. The Typhon Grom only fits a 2S LiPo with Deans connectors. Battery tray size, plug type, and ESC voltage limits are the real barriers to compatibility.
1. Voltage Limit: Kraton and Mojave are 6S (22.2V) systems. Grom is 2S (7.4V–8.4V). Using higher voltage will destroy the electronics in any of these cars.
2. Connector Type: Kraton/Mojave use EC5/IC5; Grom uses Deans. Adapters are possible but cause heat and voltage loss under high load. Always match connectors when possible.
3. Tray Size: Kraton: 165x48x60mm; Mojave: 156x48x70mm; Grom: 100x35x30mm. Overly large packs won’t fit or require tray mods. Hardcase packs generally fit better, but measure first.
4. Minimum C Rating: Kraton/Mojave: 50C or higher for true 6S performance. Grom: 30C is sufficient. Lower C = more voltage sag and risk of ESC shutoff.
5. Single vs. Dual Packs: Kraton/Mojave can use a single 6S or two 3S packs. Grom is single 2S only. Never run two 2S in series in a Grom.
6. ESC Limitations: Kraton and Mojave ESCs are 150A units with built-in voltage cutoffs. Grom’s ESC is 35A and non-programmable. Exceeding voltage ratings causes instant failure.
Side-by-Side Specs
| Feature | Kraton 6S EXB | Mojave 6S | Typhon Grom |
|---|---|---|---|
| Battery Type | 6S LiPo (or 2x 3S) | 6S LiPo (or 2x 3S) | 2S LiPo |
| Tray Size (mm) | 165x48x60 | 156x48x70 | 100x35x30 |
| Connector | EC5/IC5 | EC5/IC5 | Deans (T-plug) |
| ESC Voltage Limit | 6S (25.2V max) | 6S (25.2V max) | 2S (8.4V max) |
| ESC Current | 150A | 150A | 35A |
| Motor | 4074 2050Kv BLX | 4074 2050Kv BLX | 3650 3200Kv |
| Stock Gearing | 16T pinion | 16T pinion | 24–26T pinion |
| Recommended mAh | 5000–7000mAh | 5000–7000mAh | 3500–5000mAh |
| Min. C Rating | 50C | 50C | 30C |
| Max. Pack Weight | 800g (28.2oz) | 900g (31.7oz) | 300g (10.6oz) |
Practical Performance: What Works for Bashing, Racing, and Upgrades?
For the Kraton 6S EXB and Mojave 6S, a 6S 5000–6000mAh 50–100C LiPo with EC5/IC5 connectors is ideal for backyard bashing, skatepark sessions, and dirt track runs. These packs fit in the tray, deliver consistent punch, and keep weight manageable. For street use or speed runs, 6500–7000mAh packs extend runtime, but the extra mass makes landing jumps trickier and may overload the ESC on hot days.
→ 6S LiPo Battery, A 5000mAh 50C pack is the sweet spot for both Kraton and Mojave; fits the tray and delivers peak punch.
The Typhon Grom shines on a 2S 4000mAh 30–50C LiPo, especially for mixed terrain and jumps. Packs over 4500mAh increase nose weight and hurt acceleration. On grass, the Grom’s stock 3200Kv motor pulls about 30A at full throttle, so even a modest 30C pack is enough. If you race on carpet or smooth dirt, a lighter 3000–3500mAh pack can make the Grom feel snappier.
For all models, use a genuine balance charger with storage mode. Overcharging or storing LiPos fully topped off kills them fast. If you’re pushing hard or running in hot weather, check cell voltage after every run; anything below 3.5V/cell means you’re running too long or your pack’s on its way out. We’ve seen ESC cutouts from tired batteries cause more crashes than any other single failure.
→ LiPo Balance Charger, Storage mode keeps your batteries healthy and ready for your next bash session.
If you’re upgrading power systems (bigger ESC or motor), verify your battery can handle the extra current. For a high-torque metal gear servo upgrade, you might want to up your BEC voltage and check your ESC’s output. Cheap high-torque servos can draw 3–4A on stall, which some stock BECs can’t deliver. We’ve fried more than one ESC by overloading the BEC with too beefy a servo on 6S setups.
→ Metal Gear Servo, A true high-torque servo needs a stable power source; stock BECs may not be enough on big jumps or rough terrain.
Who Should Buy Which Battery? (2026 Buying Guide)
If you own a Kraton 6S EXB or Mojave 6S, your best bet in 2026 is a name-brand 6S LiPo (22.2V) with at least 5000mAh and 50C, EC5/IC5 connector. For new bashers, start with a 5000–6000mAh hardcase; it’s durable, fits the tray, and delivers solid punch. Experienced bashers may want a 6500–7000mAh for extended runtime, but measure your tray first and balance the car after install. If you’re racing, stick to lighter packs for agility.
For the Typhon Grom, a 2S 3500–4000mAh 30–50C hardcase LiPo with Deans connector is ideal in 2026. Avoid soft-packs unless you never crash. If you’re running a lot on grass or rough dirt, a 4000mAh pack gives best balance of runtime and punch without overloading the ESC or making the buggy nose-heavy.
Always buy from a reputable sourcefake or no-name LiPos are still everywhere in 2026, and puffing/explosions are not just a meme. If you’re not sure, buy a slightly smaller pack and shim it in the tray. Never force a LiPo to fit, and never exceed the ESC’s voltage limit. For more on Kraton and Typhon use-cases, check our Kraton vs. Infraction comparison and Typhon/Grom battery guide.
Frequently Asked Questions
Can I run a 4S battery in my Kraton 6S EXB?
Yes, the Kraton 6S EXB will operate on a 4S LiPo, but you’ll lose significant power and top speed. Expect about 35–40mph with stock gearing, and less punch for bashing or big jumps. Always use a battery with EC5/IC5 connectors and at least 50C discharge rate for best results.
Will a 6S battery fit in the Typhon Grom?
No, the Typhon Grom is designed for 2S packs only. A 6S battery will not fit in the tray, and the electronics cannot handle the voltage. Using a 6S pack will instantly damage the ESC and motor. Always use a 2S LiPo, 3500–5000mAh, with a Deans connector.
What’s the best connector type for ARRMA 6S cars?
EC5 and IC5 connectors are the standard for ARRMA 6S vehicles like the Kraton and Mojave. They handle high current (up to 120A burst) with minimal resistance. Adapters to Deans or XT90 can work, but often cause heating issues or voltage drop during hard running.
Can I use soft-case LiPos in my Kraton or Mojave?
You can use soft-case LiPos, but hard-case batteries are safer for heavy bashing. Soft-cases can get punctured or puff in crashes, especially on jumps and rough terrain. Always check tray fit and secure the pack well. Hard-cases add a layer of physical protection for your battery.
What’s the maximum mAh I can run in a Kraton 6S EXB?
The Kraton 6S EXB can fit up to a 7000–8000mAh 6S pack if the dimensions are under 165x48x60mm. Higher capacity increases runtime but adds weight, affecting handling. Overly large packs may require tray modification and can stress the ESC if under-specced for discharge rate.
Are aftermarket batteries safe for ARRMA cars in 2026?
Most reputable aftermarket LiPo brands are safe, as long as you match the voltage, connector, and C rating to your ARRMA model. Avoid ultra-cheap or no-name packsmany still use low-quality cells in 2026, risking puffing and fires. Always check reviews and seller reputation before buying.
How do I know if my battery is causing ESC shutdowns?
If your ESC cuts out during hard acceleration, and your pack is warm or below 3.4V/cell after the run, the battery may be too small or worn out. Voltage sag under load trips the ESC’s low-voltage cutoff. Try a higher C-rated or newer battery to see if the issue resolves.
Final Verdict
After years of running, breaking, and fixing ARRMA rigs, here’s what matters for battery compatibility in 2026: The Kraton 6S EXB and Mojave 6S demand a true 6S LiPo (or two matched 3S) with EC5/IC5 connectors, 5000–7000mAh, and at least 50C. These packs unlock the full performance and durability these beasts are built for, without risking ESC meltdown or tray fitment headaches. Don’t waste time with adapters unless you’re in a bindthe risk of resistance, heating, and voltage drop is real, especially after dozens of runs. The Mojave tray is just a hair taller, so if you’re running tall hardcases, it’s slightly more forgiving than the Kraton. Always measure before buying, and remember: battery weight changes how these trucks jump, land, and corner.
The Typhon Grom is a totally different animal: 2S LiPo only, up to 4000mAh ideally, with a Deans plug. Anything bigger or higher voltage is a recipe for electronics failure or a nose-heavy, sluggish buggy. The Grom’s lightweight build rewards careful battery choicea good hardcase 2S is all you need for maximum fun and reliability.
No matter your ARRMA, get a reputable LiPo charger with storage mode, and check your connectors every few runs. ESC cutoffs and random shutdowns are almost always caused by tired batteries, not faulty electronics. In 2026, a little research and careful measuring go a long way. Happy bashing.
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