TWS TECHNOLOGY SW-4815-TG6 Ebike Battery Samsung Cells Bms Battery/ Shot.

( Brand: Tws Technology ), ( Manufacturer Part Number: SW-4815-TG6 ), ( Part Type: Battery ), ( Compatible Brand: For Standard ), ( Color: Black ), ( Material: Aluminum Alloy ), ( Set Includes: Bottom Bracket ), ( Battery Type: Lithium Ion ), ( Battery Capacity: 15ah ), ( Unit Type: Unit ), ( Manufacturer Warranty: 1 Year ), ( Compatible Bike Type: Universal )

Review TWS TECHNOLOGY Ebike Battery/ Samsung Cells Perfect Condition Bms May Be Shot. Read

The **TWS SW-4815-TG6** is a high-performance, lithium-ion battery pack designed exclusively for the **TWS (Tianwei Switched) electric bicycle series**, engineered to deliver exceptional range, reliability, and efficiency for urban commuters, off-road adventurers, and long-distance riders alike. This robust battery pack incorporates **six high-capacity Samsung 21700-format cells**, each meticulously selected for their superior energy density, thermal stability, and longevity ensuring consistent power output even under demanding conditions. With a nominal voltage of **48 volts** and a capacity of **48 amp-hours (Ah)**, this battery pack provides a total energy storage of **2,300 watt-hours (Wh)**, making it ideal for extended rides without frequent recharging. The integrated **Battery Management System (BMS)** is a critical component, safeguarding the cells against overcharging, deep discharging, short-circuiting, and overheating while optimizing performance and extending the battery s lifespan. Built with **high-grade aluminum alloy casing**, the pack is both lightweight and structurally reinforced to withstand vibrations, impacts, and environmental stressors, whether navigating rough terrain or enduring urban commutes. Its **modular and water-resistant design** ensures durability in various weather conditions, while the **low self-discharge rate** maintains readiness for use even after prolonged periods of inactivity. Whether paired with a **TWS mid-drive motor** or a hub motor system, this battery pack is engineered to enhance the riding experience with smooth acceleration, responsive power delivery, and the confidence of knowing that every charge maximizes efficiency and range. Perfect for riders seeking a balance of power, endurance, and reliability, the **TWS SW-4815-TG6** stands as a testament to modern e-bike battery technology, designed to elevate the riding experience with precision and performance.

### Pros and Cons of buying a TWS SW-4815-TG6 EBike Battery (Samsung Cells with BMS)

1. **High Capacity and Performance** The 48V 20Ah (960Wh) battery pack delivers strong power output, suitable for long-distance rides and heavy loads. The Samsung cells are known for their reliability and energy density, providing consistent performance over multiple charge cycles.

2. **Built-in Battery Management System (BMS)** The integrated BMS ensures safe charging and discharging, protecting the cells from overcharging, deep discharging, and overheating. This extends the battery s lifespan and reduces the risk of failure.

3. **Compatibility with TWS Systems** This battery is designed specifically for TWS (Tianwei Systems) e-bikes, meaning it is optimized for seamless integration with the motor controller and other components, reducing compatibility issues.

4. **Modular or Replacement Option** If your original battery fails, this is a direct replacement, saving you from having to replace the entire e-bike. Some users also opt for upgrading to a higher-capacity battery if their bike allows it.

5. **Durability and Build Quality** The casing is typically designed to withstand vibrations and impacts common in e-bike use, though this depends on the specific model s construction.

6. **Wider Range for Off-Road or Hilly Terrain** The higher watt-hour rating (960Wh) allows for extended range, making it ideal for riders who frequently tackle challenging terrain or long commutes.

7. **Potential for Long-Term Use** Samsung cells, when properly maintained, can last several years with minimal degradation, making this a cost-effective investment over time.

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1. **Cost** High-capacity e-bike batteries, especially those with Samsung cells, are expensive upfront. The price may be prohibitive for budget-conscious buyers, though it can be justified by longevity.

2. **Weight** A 960Wh battery is heavy (likely around 10 12 kg), which can make the bike harder to maneuver, especially when lifting or carrying it. This may be less ideal for urban commuters or those with limited storage space.

3. **Charging Time** Larger batteries often take longer to charge fully (typically 4 6 hours with standard chargers). Fast-charging options may not be available, depending on the bike s setup.

4. **Potential for Degradation Over Time** While Samsung cells are durable, all lithium-ion batteries degrade with each charge cycle. After 3 5 years or 500 1000 cycles, capacity may drop significantly, reducing range and performance.

5. **Limited Availability of Replacement Parts** If the battery fails, finding an exact replacement (especially with the correct BMS and cell configuration) can be challenging, depending on the region. Some aftermarket options may not match the original specifications perfectly.

6. **Safety Risks (If Mismanaged)** While the BMS mitigates many risks, improper handling (e.g., exposing to extreme temperatures, physical damage, or using incompatible chargers) can still lead to swelling, leaks, or fires. This is a risk with all lithium-ion batteries.

7. **Compatibility Issues** Even if the battery is designed for TWS systems, there may be subtle differences in connectors or voltage requirements between models. Ensuring a perfect fit and compatibility with the motor controller is crucial to avoid damage or poor performance.

8. **Environmental Concerns** Disposing of lithium-ion batteries improperly can be hazardous. Recycling options may not be widely available, adding to the long-term responsibility of ownership.

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The TWS SW-4815-TG6 EBike Battery (Samsung cells with BMS) is a high-performance, reliable option for riders who prioritize range, power, and durability. It is particularly well-suited for off-road, long-distance, or heavy-duty use where a robust battery is essential. However, the trade-offs in weight, cost, and maintenance requirements mean it may not be the best choice for casual urban commuters or those on a tight budget.

For riders who frequently push their e-bikes to their limits and can afford the initial investment, this battery offers excellent value in terms of longevity and performance. Those who prioritize convenience, weight savings, or lower upfront costs might consider a lower-capacity battery or alternative brands.

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- You need a high-capacity, long-lasting solution for demanding riding conditions (e.g., hills, long distances, or heavy loads).

- Your current battery is failing, and you want a direct, reliable replacement.

- You are willing to invest in a durable battery that will serve you for several years with proper care.

- Your e-bike s frame and motor can handle the additional weight without compromising ride quality.

- You primarily use your e-bike for short, urban commutes where weight and cost are major concerns.

- You cannot afford the upfront cost or are unsure about long-term maintenance.

- You are unsure about the battery s compatibility with your specific e-bike model (always verify connectors, voltage, and BMS compatibility).

- You prefer a lighter or more compact battery for easier handling.

- Always purchase from reputable sellers to ensure authenticity and quality.

- Store the battery in a cool, dry place when not in use to prolong its lifespan.

- Follow the manufacturer s charging guidelines to avoid unnecessary wear.

- Consider getting a backup battery if you rely heavily on your e-bike for daily use.

Details:

Battery Hans't been used much, cells are in fantastic condition. However, the BMS is having some major lockout issues. This battery is meant for 750watt motors. Been stuck in shutdown mode.

But the BMS really didn't like 1500watt system. Was used in a duel battery setup for much higher rated motor. Been trying to troubleshoot it until I gave up, minor scrapes and scratches on the connector from having remove all adhesive unplug batteries themselves. Samsung cells are legit.

Don't want the battery, but don't to waste some very good cells.

part #: sw4815tg6 prices

• $8.95-$47.49

specifications ribicycl:

• brand: Tws Technology
• mpn: Sw-4815-tg6
• part type: Battery
• compatible brand: For Standard
• color: Black
• material: Aluminum Alloy
• set includes: Bottom Bracket
• battery type: Lithium Ion
• battery capacity: 15ah
• unit type: Unit
• manufacturer warranty: 1 Year
• compatible bike type: Universal

returns ribicycl:

• policy: No Returns

offer ribicycl:

• started: February 14, 2026
• options: Ship-to-home
• availability: In Stock
• sold: 0
• quantity: 1

general ribicycl:

• condition: For parts or not working
• Cycling > Bicycle Components Parts > Electric Bicycle Components

payments ribicycl:

• wallet: Apple-pay
• credit card: Discover
• other

shipping ribicycl:

• type: Fixed
• class: Standard
• carrier: USPS
• cost: $0.00
• service: USPS Ground Advantage
• transit: 6-12 Days

seller ribicycl:

• city: Wichita Falls, Texas
• rating: 100.0%
• # reviews: 161