Ultra Bee 74V 55AH Lithium-Ion Battery (2024 and earlier)
$2,699.00
Ultra Bee OEM High-Performance 74V 55AH Battery Pack for model years 2024 and earlier.
Features:
- Stunning Capacity: 4070Wh for long-lasting power
- Advanced Design: Higher power density and lower temperature rise during discharge
- Enhanced Reliability: Continuous discharge capabilities for dependable performance
- Lightweight Powerhouse: 45.19lb with an industry-leading 200Wh/kg capacity density
Engineered for performance and built for endurance, the Ultra Bee battery pack transforms your riding experience with superior power and reliability.
Ultra Bee 74V 55Ah Battery
Overview: Ultra Bee 74V 55Ah Lithium-Ion Battery
Ultra Bee 74V 55Ah 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.
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.
Surron battery 72v Key Features & Benefits
-
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.
-
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.
-
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.
-
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
-
-
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
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.
Comparison with Common Alternatives
| Surron battery 72v Feature | Ultra Bee 74V 55Ah | Stock Sur-Ron 60V 32Ah | “ChiBattery” 72V 69Ah |
|---|---|---|---|
| Voltage | 74V (72V Nominal) | 63V (60V Nominal) | 74V (72V Nominal) |
| Capacity | 55 Ah | 32 Ah | 69 Ah |
| Energy | ~3.96 kWh | ~2.0 kWh | ~5.0 kWh |
| Power Output | Very High (200A+) | Moderate | Extremely High (300A+) |
| Use Case | High-performance upgrade | Stock riding | Maximum range & power |
| Size/Weight | Larger & heavier than stock | Standard | Largest & heaviest |
| Price Point | Premium | Included with bike | Top-tier / Most Expensive |
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
29 reviews for Ultra Bee 74V 55AH Lithium-Ion Battery (2024 and earlier)
Add a review
Related products
Jonathan Reeves –
I ordered the Altis Sigma MX from Bonnell Bike and the entire experience was flawless. Shipping from the USA warehouse to Texas took only 4 days. The bike arrived fully assembled and perfectly tuned. Customer support answered all my pre-purchase questions within hours. This is my new go-to shop for e-bikes.
Samantha Miller –
Absolutely love my new Surron Light Bee X! The team at Bonnell Bike was incredibly helpful in helping me choose between the Surron and the Altis Delta. They gave honest advice instead of just pushing the more expensive bike. Shipping was fast and the bike arrived in perfect condition. Highly recommend.
Marcus Thompson –
This is my third bike from Bonnell Bike and they never disappoint. I’ve purchased a Surron
Priya Sharma –
Ordered the Altis Delta eBike to Dubai. I was worried about international shipping but Bonnell Bike made it seamless. They handled all the customs paperwork and the bike arrived in about 10 days. The Delta is an absolute beast on the dunes. Thank you Bonnell Bike team.
Ethan Walker –
Great experience overall. Bought the 79Bikes Falcon and it arrived well-packaged from the China warehouse. Took about 12 days to Australia which was reasonable. Only minor complaint is that I wish the tracking updates were more frequent during transit. Bike itself is incredible.
Olivia Chen –
I was nervous about buying an e-bike online without seeing it first
Liam O’Connor –
Best customer service I have ever experienced from an online retailer. I had a small issue with my charger and they sent a replacement from their Europe warehouse within 48 hours. No hassle
Isabella Rossi –
Comprato la Altis Delta e la spedizione dall’Europa è stata rapidissima. La bici è fantastica
Daniel Kim –
The Altis Sigma MX is an absolute monster. I’ve owned gas dirt bikes for 20 years and this thing rivals my 250cc. Bonnell Bike shipped it from their USA warehouse and it arrived in 3 days. The race display with lap timer is a game changer. Worth every penny.
Sophia Martinez –
I bought my son a Surron Light Bee X for his birthday and he has not stopped riding it since. Bonnell Bike made the whole process easy
Noah Wilson –
Ordered an Altis Sigma from the Canada warehouse. Delivery to Toronto took 5 days which was great. The bike is phenomenal. I’m giving 4 stars instead of 5 only because the assembly instructions could be clearer for first-time e-bike owners. Once assembled
Ava Johnson –
This is my first e-bike and I did months of research before choosing Bonnell Bike. The team answered every single question I had with patience and expertise. My Altis Delta arrived quickly and in perfect condition. I could not be happier with my purchase.
Lucas Silva –
Pedido para o Brasil chegou em 15 dias úteis. A embalagem era perfeita e a Altis Sigma chegou sem nenhum arranhão. A Bonnell Bike é a melhor loja online para quem procura e-bikes de alta performance. Recomendo a todos.
Emma Brown –
I had an issue with my order and the Bonnell Bike support team resolved it within hours. They were professional
Mason Davis –
The Altis Sigma MX is hands down the best electric dirt bike I have ever ridden. The torque is insane and the suspension soaks up everything I throw at it. Bonnell Bike shipped it fast from their US warehouse and even followed up to make sure everything was perfect. 10/10.
Charlotte Garcia –
I bought the 79Bikes Falcon for my husband and he absolutely loves it. Bonnell Bike offered the best price I could find online and the shipping was incredibly fast. The bike arrived fully assembled and ready to ride. Excellent service from start to finish.
William Taylor –
Third purchase from Bonnell Bike and they remain the best in the business. Ordered spare batteries
Amelia Anderson –
From the moment I placed my order to the day my Altis Delta arrived
James Martin –
Great bike
Harper Thompson –
The Altis Sigma is a game changer. I use it for both trail riding and commuting to work. The range is incredible and the build quality is top-tier. Bonnell Bike’s customer service team was amazing in helping me choose the right model for my needs. Five stars all around.
Benjamin Lee –
I cannot say enough good things about Bonnell Bike. I purchased the Altis Sigma MX and it exceeded every expectation. The power delivery is smooth but brutal when you need it. Shipping was lightning fast and the bike arrived in mint condition. Best purchase I have made in years.
Evelyn White –
As a first-time e-bike buyer
Henry Clark –
Ordered a Surron Light Bee X and a spare battery from Bonnell Bike. Both items shipped together from the China warehouse and arrived in about 12 days to New Zealand. The packaging was excellent and everything worked perfectly out of the box. Highly recommend this shop.
Victoria Lewis –
The Altis Delta is the perfect balance of power and weight. I was torn between the Delta and Sigma
Sebastian Muller –
Perfekter Service und schnelle Lieferung aus dem EU-Lager nach Deutschland. Die Altis Sigma MX ist ein Biest auf dem Trail. Alles war sehr gut verpackt und kam unbeschädigt an. Bonnell Bike ist definitiv der beste Online-Shop für E-Bikes.
Grace Robinson –
I bought the 79Bikes Falcon for my son and he is obsessed. The bike is incredibly well-built and the battery life is impressive. Bonnell Bike shipped it quickly and their support team followed up to ensure we were happy. Fantastic experience from start to finish.
Alexander Young –
I have purchased from several e-bike retailers and Bonnell Bike is by far the best. Their prices are competitive
Chloe King –
What an amazing experience! I ordered the Altis Delta on a Monday and it arrived at my door in California on Thursday. The bike was beautifully packaged and in perfect condition. I have already put 200 miles on it and could not be happier. Thank you Bonnell Bike.
Jackson Wright –
The Altis Sigma MX is the real deal. I race motocross and this electric bike hangs with gas bikes on the track. Bonnell Bike shipped it fast and their support team helped me with a custom suspension setup. If you are serious about e-bikes