Zeee 7.4 V (2S) LiPo Batteries

Zeee 2S LiPo packs provide practical, balanced power for 1/10-scale cars and trucks, crawlers, and entry-level airplanes. They keep electronics cooler than higher-voltage setups, are widely compatible, and offer predictable handling with solid runtime.

Best Use Cases

• 1/10 touring, street bashers, and stadium/short-course trucks: smooth throttle, predictable cornering, and manageable temps.
• Crawlers and trail rigs: precise low-speed control and long runtime without raising the center of gravity.
• Beginner and park flyers: gentle power delivery and cooler ESC/motor temps while you learn.

Choose 2S If / Avoid 2S If

• Choose 2S if you want balanced speed and control, longer seat time, and lower stress on electronics.
• Avoid 2S if your vehicle specifically requires 3S+ (e.g., heavy stunt trucks, 1/8 buggies/truggies, EDF jets) or if you need maximum top speed beyond what gearing can safely deliver.

How to Pick the Right Zeee 2S Pack

1. Voltage: Confirm your model is rated for 2S LiPo (7.4 V nominal).
2. Capacity (mAh): More mAh increases runtime and weight. Typical starting points:
   • 1/10 cars/trucks: 4000–6000 mAh
   • Crawlers: 2200–5200 mAh (lower for comps, higher for trail days)
   • Small planes: 800–2200 mAh (match airframe spec)
3. C rating: Target a realistic margin over your average current draw.
   • Stock 1/10 brushed/13.5T–17.5T: 30–50C works for most setups.
   • Mod 1/10 or 4-pole motors on high grip: 50–80C recommended.

   Note: C ratings vary by brand; prioritize low heat and minimal voltage sag under load.

4. Case type:
   • Hard-case: cars/trucks that see impacts or chassis flex.
   • Soft-case: crawlers/aircraft where weight and fit matter more than impact protection.
5. Connectors: Choose packs that match your system (XT60, Deans/T, EC3/EC5). Every adapter adds resistance and a failure point.

Quick Fit and Compatibility Notes

• Dimensions: Many 1/10 hard-case 2S packs are around 138 × 47 × 25 mm; verify your battery tray clearance.
• Weight: Typical 2S 5000 mAh ranges ~230–320 g (soft-case on the lighter end).
• Balance lead: Standard 3-pin JST-XH for 2S; ensure your charger supports LiPo balance charging.
• ESC cutoff: Enable LiPo low-voltage protection.

Expected Runtime and Performance

Runtime varies with gearing, tires/prop, surface/wind, and drive style. If packs or electronics get hot, reduce gearing/prop load or capacity weight.

Charging, Setup, and Safety

• Charge rate: Use 1C by default (e.g., 5 A for 5000 mAh) unless the pack label or manual specifies otherwise.
• Balance charge on a non-flammable surface, in a LiPo-safe bag, and never leave unattended.
• Storage: 3.75–3.85 V per cell; store cool and dry.
• LVC (low-voltage cutoff): 3.3–3.5 V per cell under load; stopping earlier (3.5 V) improves longevity.
• Temperature: Keep packs below ~60°C / 140°F. Allow to cool to ambient before recharging.
• Inspection: Do not use swollen, punctured, or damaged packs; replace connectors with proper soldering if worn.

Setup Tips for 2S

• Gearing: Start with manufacturer-recommended spur/pinion. If temps exceed safe limits, gear down.
• ESC timing/punch: Reduce for cooler temps and smoother traction on low-grip surfaces.
• Connector health: Clean and replace loose or burnt plugs; high resistance causes voltage sag and heat.

Troubleshooting Quick Checks

• Voltage sag under throttle: Check connectors, try a higher C-rated pack, or reduce gearing.
• Short runtimes: Verify the charger is delivering full capacity, inspect the drivetrain for binding, and compare with a known-good pack.
• Heat spikes: Gear down, reduce ESC timing/punch, and improve airflow.

Alternatives to Consider

• 3S (11.1 V): More speed and punch if your ESC/motor and drivetrain are rated for it; higher thermal and wear risk.
• NiMH: Simpler handling but heavier with less punch and shorter runtime.
• LiFe (6.6 V): Very stable and long-lived, but lower voltage; check compatibility.

FAQ

Is 2S enough for my 1/10 truck?

Usually, yes. Many 1/10 tracks and street spots favor control over peak speed. Start with 2S; if you need more top end and your electronics allow it, step to 3S and re-check gearing and temps.

What C rating should I buy?

For stock 1/10 setups, 30–50C is typically fine. For high-grip or heavier trucks with powerful motors, 50–80C helps reduce sag and heat. Prioritize consistent performance over the biggest printed number.

What’s a safe charge rate?

1C is the safe default. Only charge faster if the pack specifically lists a higher supported rate.

Hard-case or soft-case?

Use hard-case for on-road/off-road cars and bashing where impacts are common. Use soft-case for crawlers and aircraft to save weight—provided the pack is protected and secured.

How can I extend pack life?

Avoid over-discharging, keep temps down, store at 3.8 V/cell, and charge at 1C. Good care commonly yields many cycles with consistent performance.