Ultra Bee 74V 55AH Lithium-Ion Battery (2024 and earlier)

Surron battery 72v

Overview: Ultra Bee 74V 55Ah Lithium-Ion Battery

This battery is known for its high power output and substantial capacity, making it a favorite in the high-performance electric vehicle (EV) community, particularly for builds requiring serious range and speed. Surron battery 72v

Surron battery 72v Key Specifications at a Glance:

• Rated Voltage: 74V

• Nominal Voltage: 72V (This is the standard working voltage; 74V is typically the fully charged voltage).

• Capacity: 55 Ah (Amp-hours)

• Energy: ~3.96 kWh (Kilowatt-hours) – Calculated as 72V * 55Ah = 3960Wh.

• Chemistry: Li-Ion (most commonly using high-discharge 18650 or 21700 cells).

• Configuration: Typically 20s (20 cells in series) to achieve the 72V/74V nominal/max voltage.

• Continuous Discharge: Varies by specific build, but often in the 150A – 250A range, suitable for powerful motors.

• Peak Discharge: Can be as high as 400A – 500A for short bursts (e.g., acceleration).

• Charge Voltage: 84V (Standard for a 20S Li-ion pack).

• Common BMS: 200A-300A continuous rating, with Bluetooth monitoring capability in many versions.

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Surron battery 72v Primary Use Case & Target Audience

This battery is almost exclusively designed for high-performance electric motorcycles and scooters, such as those built on frames like:

• Sur-Ron Light Bee / Ultra Bee

• Talaria Sting / Sting R

• Segway X260 / Xyber

• Custom-built electric dirt bikes and street bikes

It is the upgrade path for users who have exhausted the capabilities of the standard 60V batteries that come with these bikes, seeking more top speed, acceleration, and longer range.

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Surron battery 72v Key Features & Benefits

1. Massive Power Increase: Replacing a stock 60V battery with a 72V system is one of the most significant performance upgrades you can make. It directly increases the top speed and provides much more torque for acceleration.

2. Excellent Range: With nearly 4 kWh of energy, this battery can provide a substantial range. Depending on riding style, terrain, and bike setup, users can expect 50-100+ miles per charge.

3. High Discharge Rates: The ability to deliver 200A+ continuously means it can feed the most demanding aftermarket controllers (e.g., KO, Nucular, BAC) without breaking a sweat, preventing voltage sag and maintaining power.

4. Quality Construction: Reputable builders use name-brand cells (e.g., Samsung, LG, Molicel) and feature robust Battery Management Systems (BMS) with:

   • Overcharge & Over-discharge protection

   • Short-circuit protection

   • Temperature monitoring

   • Cell balancing

5. Bluetooth Monitoring (Common): Many versions include a BMS with Bluetooth, allowing users to monitor the battery’s health, voltage, individual cell group voltages, temperature, and current draw in real-time via a smartphone app. Buy Surron battery 72v

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Important Considerations & Potential Drawbacks

• Compatibility: You cannot simply drop a 74V battery into a bike designed for 60V. It requires a compatible controller and motor that can handle the higher voltage. Often, this upgrade is part of a larger “72V conversion.”

• Cost: This is a premium, high-performance component and is significantly more expensive than standard OEM batteries.

• Weight and Size: With great capacity comes great size and weight. It’s crucial to verify the physical dimensions and weight to ensure it fits your bike’s battery compartment.

• Charger Required: You will need a dedicated 72V (84V max charge) charger. A standard 60V charger will not work and could be dangerous.

• Seller/Builder Reputation is Critical: The performance, safety, and longevity of this battery are directly tied to the quality of its construction. It is not a generic off-the-shelf product.

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Comparison with Common Alternatives

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Surron battery 72v Summary: Is it Right for You?

The Ultra Bee 74V 55Ah battery is an excellent choice if:

• You own a Sur-Ron Ultra Bee, Light Bee, Talaria, or similar bike.

• You have already upgraded (or plan to upgrade) your controller and motor to a 72V system.

• You are seeking a major boost in top speed and acceleration over the stock battery.

• You want a significant range increase without going for the absolute largest (and most expensive) battery option available.

Final Warning/Caveat: Always purchase from a reputable and well-known builder with positive reviews and a clear warranty policy. The quality of the spot welding, BMS programming, and overall assembly is paramount for both performance and safety with a battery of this capability. Surron battery 72v >>

Ultra Bee 74V 55Ah Battery