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Compact semi-solid state lithium traction battery modules optimized for integrated electric assist bike down-tubes.

Semi-Solid E-Bike Battery 48V 13S1P 13-20Ah ATOMFAIR®

Price range: $220.00 through $318.00

Institutional Procurement & Supply Compliance: As a verified US supplier, Atomfair accepts formal institutional Purchase Orders (POs), contract billing schedules, and custom procurement loops for university and national laboratories, and corporate R&D departments globally.

Commercial-grade semi-solid e-bike battery series with 48 V 13S1P packs in 13 Ah or 20 Ah, -20°C to 65°C discharge, and ≥1200 cycles to 80% SOH. Order now.

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Electric Assist Bike Semi-Solid Battery Series | ATOMFAIR

COMMERCIAL GRADE · PRODUCTION

Product Overview
The ATOMFAIR® Rock Solid Series is a high-performance semi-solid state battery specifically engineered for electric assist bikes. Combining advanced semi-solid electrolyte technology, it delivers exceptional safety, wide temperature tolerance, and reliable power output. This series offers two models: AFEABS4820 and AFEABS4813, both featuring a 13S1P configuration. They support maximum continuous discharge of 20A and 13A respectively, with stable operation from -20°C to 65°C and cycle life ≥1200 cycles to 80% SOH. Ideal for e-bikes, urban commuting, and light electric vehicles. For bulk inquiries or official volume quotations, please contact us via email at inquiry@atomfair.com.

Technical Specifications
PARAMETER VALUE
Model AFEABS4820 AFEABS4813
Dimensions (L*W*H) 510 × 80 × 100 mm 230 × 95 × 75 mm
Nominal Voltage 48 V 48 V
Capacity 20 Ah 13 Ah
Rated Discharge Current 6.6 A 4.3 A
Max. Continuous Discharge 20 A 13 A
Discharge Cut-off Voltage 32.5 V 32.5 V
Charge Temperature Range 0 ~ +45 °C 0 ~ +45 °C
Discharge Temperature Range -20 ~ +65 °C -20 ~ +65 °C
Cycle Life (80% SOH) ≥1200 cycles ≥1200 cycles

Key Features & Advantages
  • Semi-Solid Electrolyte: Enhanced thermal stability, leak-proof construction, superior safety compared to conventional liquid cells.
  • Wide Operating Temperature: Reliable discharge from -20°C to +65°C, suitable for all-season e-bike riding.
  • High Power Output: Max continuous discharge 20A (20Ah model) and 13A (13Ah model) for consistent hill-climbing and acceleration.
  • Long Cycle Life: ≥1200 cycles retaining 80% capacity, providing years of daily commuting.
  • Safety Enhanced: Passes nail penetration and overcharge tests; significantly higher safety compared to conventional lithium batteries.

APPLICATION SCOPE: Electric assist bikes, e-bikes, urban commuter bicycles, and light electric vehicles requiring lightweight, safe, and durable battery solutions.
PACKAGING: Industrial-grade moisture-proof cartons with foam inserts, individual cell compartments, and anti-static shielding. Bulk packaging with pallets for OEM orders.
IMPORTANT NOTICE: Always use a compatible BMS with over‑discharge, over‑current, and cell balancing. Charge within recommended voltage range (consult datasheet). Avoid exposing cells to temperatures above 65°C for extended periods. Pre‑condition new batteries at room temperature before first full cycle.
TAILORED SOLUTIONS FOR RESEARCH
Contact our engineering team for technical support or official institutional quotations.
EMAIL: inquiry@atomfair.com
Manufacturer: Atomfair LLC
Brand: ATOMFAIR®

This semi-solid state battery must be operated within specified charge and discharge temperature ranges to prevent degradation. A compatible battery management system (BMS) with over-discharge, over-current, and cell balancing protection is mandatory for safe operation.

  • Temperature Operating Limits: Charge the battery only within 0°C to 45°C and discharge between -20°C and 65°C.
  • BMS Requirement: Always use a BMS that provides over-discharge, over-current, and cell balancing protection.
  • Pre-conditioning: Pre-condition new batteries at room temperature before the first full charge cycle.
  • Over-Temperature Avoidance: Avoid exposing the battery to temperatures above 65°C for extended periods.
  • Voltage Compliance: Charge the battery only within the voltage range specified in the product datasheet.

Follow these steps to safely prepare and use the semi-solid battery for e-bike applications. Proper handling ensures long cycle life and prevents safety hazards.

Required Equipment: Compatible battery management system (BMS) with over-discharge, over-current, and cell balancing protection

  1. Inspect Battery
    Inspect the battery housing for cracks, deformation, or leakage before installation.
  2. Connect BMS
    Connect a compatible BMS with over-discharge, over-current, and cell balancing protection to the battery terminals.
  3. Pre-condition Battery
    Pre-condition the battery by allowing it to rest at room temperature for 24 hours before the first charge cycle.
  4. Charge Battery
    Charge the battery using a charger that matches the recommended voltage range and within 0°C to 45°C ambient temperature.
  5. Monitor Temperature
    Confirm the battery temperature remains below 65°C during discharge operation.
  6. Store Battery
    Store the battery in a dry, moisture-proof container with anti-static shielding when not in use.

How does the physical size and discharge capability differ between the 20 Ah and 13 Ah versions of the ATOMFAIR semi-solid battery?

The 20 Ah model (AFEABS4820) measures 510×80×100 mm with a maximum continuous discharge of 20 A, while the 13 Ah model (AFEABS4813) is smaller at 230×95×75 mm with 13 A maximum continuous discharge. Both share the same 48 V nominal voltage and 13S1P configuration, and both deliver ≥1200 cycles to 80% SOH.

What are the BMS and charger requirements for the ATOMFAIR semi-solid e-bike battery?

The battery requires a compatible BMS with over-discharge, over-current, and cell balancing protection. Charging must occur within the recommended voltage range and within 0 to +45 °C. The battery is designed for 48 V e-bike systems and supports a maximum continuous discharge of 20 A (20 Ah model) or 13 A (13 Ah model).

What are the operating temperature limits and safety features of the ATOMFAIR semi-solid battery?

The battery operates reliably from -20°C to +65°C during discharge, with charging limited to 0 to +45°C. It passes nail penetration and overcharge tests, offering enhanced safety over conventional liquid electrolyte lithium batteries due to its semi-solid electrolyte construction.

The ATOMFAIR Rock Solid Series semi-solid state battery for e-bikes, available in 20 Ah and 13 Ah capacities, leverages a semi-solid electrolyte to enhance thermal stability and safety over conventional liquid cells, while delivering reliable discharge from -20°C to 65°C and a cycle life of ≥1200 cycles to 80% SOH.

Positive

  • Semi-solid electrolyte safety: The semi-solid electrolyte construction provides enhanced thermal stability and leak-proof operation, passing nail penetration and overcharge tests for superior safety compared to conventional liquid lithium-ion cells.
  • Wide temperature discharge range: Reliable discharge from -20°C to 65°C enables all-season e-bike operation without performance degradation in cold or moderately hot environments.

Trade-offs

  • Charge temperature restriction: Charging is limited to 0°C to 45°C; charging below freezing may cause irreversible damage, requiring temperature-controlled charging infrastructure in cold climates.
  • BMS dependency for safe operation: The battery requires a compatible BMS with over-discharge, over-current, and cell balancing protection; operation without proper BMS risks safety and cycle life.

Every advanced material, component, equipment, and instrument in our catalog is backed by rigorous testing. We maintain strict internal quality management frameworks and align with CE conformity metrics to deliver transparent, reproducible performance data via our public open-science repository.

To request raw batch performance data, submit formal vendor registration paperwork, or execute a fast-turnaround R&D manufacturing loop, contact us at inquiry@atomfair.com.

Item is dispatched under the Atomfair Shipping & Delivery Framework (Free worldwide shipping on orders over $59 USD excl. heavy equipment). Return is governed by the Atomfair Return & Refund Policy (7-day technical return window).

Capacity

20 Ah, 13 Ah

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