Home / Products / BOOANT 48V 30Ah Ebike Battery with Samsung 21700 50G Cells & Smart BMS
Fast Delivery

Fast US/EU Shipping

Support

24/7 Expert Technical Support

Warranty

1-Year Warranty

Payment

Secure Checkout

48V 30Ah eBike Battery – Samsung 50G Cells, Smart Bluetooth BMS

Built for long-range eBike performance — powered by authentic Samsung 50G cells, never generic.

Premium Samsung 50G Cells

78pcs genuine Samsung INR21700-50G (NCA chemistry) in 13S6P configuration. Delivers 1440Wh total energy capacity with high discharge stability.

Bluetooth Smart BMS

Integrated intelligent BMS with Bluetooth connectivity. Monitor voltage, current, temperature, state of charge (SOC) and remotely control charge/discharge via dedicated APP.

PVC Wrapped Protection

Industrial‑grade insulating PVC shrink wrap. Provides excellent resistance to abrasion, moisture ingress, and minor impacts while maintaining a compact form factor.

Fast Charger Compatibility

Designed to work with a 54.6V 5A smart charger (included with full product). Typical full charge time ~6 hours. Integrated BMS manages safe charging.

Frequently Asked Questions

Q: Is this a true 48V 30Ah battery?

A: Yes. Built with 78 Samsung 50G cells in 13S6P configuration, delivering real 1440Wh capacity.

Q: Can I use it with Bafang BBSHD?

A: Yes, compatible with most 48V mid-drive systems including Bafang.

Q: Does it support Bluetooth monitoring?

A: Yes, real-time data via mobile app.

eBike Conversion Kits (Bafang / Mid-drive systems)
Long-range commuter eBikes
DIY battery builds & upgrades

BOOANT 48V 30Ah (1440Wh) eBike battery. 78 authentic Samsung INR21700-50G cells in 13S6P configuration. Integrated Bluetooth smart BMS with real-time monitoring. PVC shrink wrap protection. Compatible with Bafang BBSHD and most 48V mid-drive systems. Designed and assembled by BOOANT.

Samsung INR21700-50G Datasheet & Specifications (5000mAh 21700 Cell)

Original Samsung SDI · 5000mAh High Capacity · 9.8A Continuous Discharge · 1000+ Cycle Life

5,000mAh
Nominal Capacity
9.8A
Continuous Discharge
14.7A
Peak Discharge (Non‑continuous)
3.63V
Nominal Voltage
Genuine Samsung SDI cell (INR chemistry)
18.3Wh nominal energy per cell
21700 form factor (21mm x 70mm)
Discharge temp: -20°C to 60°C
1000+ cycles (≥80% capacity retention)
Max charge voltage: 4.2V ±0.05V

Typical Applications

The Samsung INR21700-50G cell is widely used in: eBike battery packs, electric scooters, portable energy storage systems, and DIY lithium battery assemblies.

Why Samsung 50G Instead of 50S?

The Samsung 50G cell is optimized for high capacity and long-range performance, making it ideal for eBike battery systems where endurance matters more than peak current.

Samsung 50G

Optimized for long-range riding and maximum energy density.

  • Capacity:5,000mAh
  • Continuous discharge:9.8A
  • Best for:eBikes, long-range packs, energy storage
  • Cycle life:1,000+ cycles

Samsung 50S

Higher discharge capability, suited for high-power setups.

  • Capacity:5,000mAh
  • Continuous discharge:~25A (higher power)
  • Best for:High-drain devices, power tools, vaping
  • Cycle life:~500 cycles

For most 48V and 52V eBike systems, the 50G provides a better balance of range, efficiency, and cycle life.

Original Samsung INR21700-50G cell technical specifications: 5000mAh capacity, 9.8A continuous discharge, 14.7A peak, 3.63V nominal, 1000+ cycle life. Genuine Samsung SDI cell with INR chemistry. 21700 form factor. Designed and assembled by BOOANT.

JBD Bluetooth Smart BMS · 48V 13S

13S 48V Intelligent Protection · Real-Time Monitoring · Remote Control via APP

Designed for 48V eBike, electric scooter, and custom lithium battery systems

📡

Bluetooth Connectivity

Built-in Bluetooth for wireless monitoring and control via Xiaoxiang Smart APP

⚖️

Intelligent Cell Balancing

Maintains consistent cell voltage, improving battery lifespan and stability

🌡️

Temperature Protection

Multiple NTC sensors monitor pack temperature, prevents overheating and freezing

🔧

Customizable Settings

Adjustable parameters via APP to match specific motor power requirements

Overcharge Protection
Over-discharge Protection
Overcurrent Protection
Short Circuit Protection
Temperature Protection

📱 Real-Time Monitoring via Xiaoxiang Smart APP

Download the Xiaoxiang Smart BMS app (iOS/Android). Monitor cell voltages, current, temperature, and remaining capacity. Remotely enable or disable charge/discharge for added safety and control.

This smart BMS is professionally integrated into our 48V lithium battery packs, ensuring stable performance, extended cycle life, and enhanced safety under real-world riding conditions.

FAQ ❓

Q: What does a smart BMS do in a 48V battery?

It monitors voltage, current, and temperature to protect the battery and ensure safe operation.

Q: Is Bluetooth BMS necessary for eBike batteries?

It allows real-time monitoring and improves maintenance and safety.

Technical specifications for JBD 48V 13S Bluetooth BMS used in eBike and lithium battery packs. Real-time monitoring via Xiaoxiang APP, intelligent cell balancing, and multi-layer protection. Designed for 48V eBike, electric scooter, and custom lithium battery systems. Designed and assembled by BOOANT.

WATE 54.6V 5A Smart Lithium Battery Charger

48V 13S Li-ion System CC-CV Charging 273W High Efficiency

Engineered for 48V (13S) lithium-ion battery packs, including e-bike and DIY energy systems built with high-drain 21700 cells such as Samsung 50G / 50S. This smart charger ensures stable, safe, and fully automatic charging with CC-CV control.

Why Choose a 5A Smart Charger?

Compared with standard 2A chargers, this 5A fast charger reduces charging time by up to 60%, making it ideal for high-capacity battery packs (20Ah–60Ah).

  • Faster charging for daily e-bike use
  • Reduced downtime for long-range riders
  • Stable current prevents lithium cell stress
  • Optimized for high-capacity battery packs (30Ah+)

Electrical Specifications

54.6V
Output Voltage
5A
Charging Current
273W
Rated Power
100-240V
AC Input

Compatible Battery Systems

Designed for lithium battery packs using a 13-series (13S) configuration, commonly found in 48V nominal systems.

  • 48V e-bike battery packs
  • Electric scooters and mopeds
  • DIY lithium battery systems
  • Battery packs using Samsung 50G / 50S cells (indirect compatibility via pack design)

Built-in Safety Protection

  • Overcharge protection
  • Overcurrent protection
  • Short-circuit protection
  • Over-temperature protection
  • Reverse polarity protection

The charger automatically stops when the battery reaches full voltage (54.6V), preventing overcharging and extending battery lifespan.

Smart CC-CV Charging Algorithm

The charger uses a professional CC-CV (Constant Current → Constant Voltage) charging profile:

  • Stage 1: Constant current fast charging (0–80%)
  • Stage 2: Constant voltage balancing (80–100%)
  • Stage 3: Automatic shutdown at full charge

Charging Time Reference

  • 20Ah battery: ~4 hours
  • 30Ah battery: ~6 hours
  • 50Ah battery: ~10 hours

Actual charging time depends on battery condition and BMS configuration.

Status Indicator

  • 🔴 Red: Charging in progress
  • 🟢 Green: Fully charged / standby

WATE 54.6V 5A smart charger designed for 48V 13S lithium-ion battery packs. CC-CV charging, 273W output, multi-layer protection, and automatic stop. Compatible with high-performance e-bike and DIY lithium battery systems. Designed and assembled by BOOANT.

48V 30Ah Lithium Battery – Discharge Connector Selection Guide

Choose the correct discharge connector based on your motor power, current demand, and system compatibility.

Connector Selection & Technical Specifications
Current Range Connector Rating & Key Features Application Mapping
≤60A XT60 60A continuous · Compact design · Standard eBike interface Light eBike / commuter systems (250W–1000W)
≤90A XT90 / XT90S 90A continuous · High current · XT90S adds anti-spark protection Mid-power eBikes, scooters · High torque eBike (1500W–3000W)
≤120A QS8 120A peak · Ultra-low resistance · 8mm bullet-style High power scooters (3000W–8000W) · Performance builds
Industrial / rugged Anderson SB50+ 50A–175A range · Genderless modular design Solar / storage systems · Modular battery banks · Industrial equipment

Note: XT90S recommended for high-capacitance controllers. QS8 recommended for sustained high discharge.

Selection Rules & Customization Options

⚡ Important Selection Rules

  • Connector current rating must exceed controller peak current to prevent overheating.
  • XT90S anti-spark variant is essential for systems with high-capacitance controllers.
  • QS8 connector is recommended for applications requiring sustained high discharge current.

🔧 Customization Options

  • Custom wire length and dual output connector configurations available.
  • Alternative connector types: EC5, EC8, Deans (T-Plug), Anderson SB120/SB175.
  • OEM wiring configuration support and pre-installed anti-spark options.
Frequently Asked Questions

Q: Which connector is best for 2000W eBike?

A: XT90S is recommended for stable current handling and anti-spark protection.

Q: Can I change the connector after purchase?

A: Yes, but it requires soldering and proper insulation to maintain safety.

Q: XT90 vs XT90S difference?

A: XT90S includes anti-spark design to reduce inrush current damage.

Q: What happens if connector is undersized?

A: It may overheat, increase resistance, and reduce battery efficiency.

Engineering Notes & Technical Support

📐 Engineering Note — Connector selection directly impacts system efficiency and reliability. Always match connector current rating to controller peak demand and consider operating temperature.

📞 Technical Support — Provide your controller voltage and current specifications for personalized connector compatibility recommendations.

Technical guide for selecting discharge connectors for 48V 30Ah lithium battery systems. XT60, XT90S, QS8, Anderson SB50 compatibility, current ratings, and application mapping for eBike, scooter, and solar systems. Designed and assembled by BOOANT.

JBD BMS Selection System for 48V 30Ah Battery Packs

Core principle: BMS current rating should match your controller demand — not just motor wattage.
1. Instant Selection Engine
Usage Type Recommended JBD BMS Reason
City commuting / flat terrain 30A Highest efficiency, longest range, lowest heat
Mixed terrain / cargo / hills 40A Balanced output and thermal stability
Off-road / performance / steep hills 50A Maximum torque delivery and current headroom

2. Real-World System Behavior (US / EU Riding Conditions)
  • Urban riders (NYC / London / Berlin) → 30A provides optimal range efficiency under stop-and-go traffic
  • Suburban riders → 40A supports longer sustained climbs and cargo loads
  • Performance riders → 50A ensures stable output under aggressive acceleration

3. Engineering Comparison (System-Level View)

30A System

Motor Range: 800W–1000W

Peak: ~1200W

Profile: Efficiency optimized

Result: Maximum range per charge

40A System

Motor Range: 1000W–1500W

Peak: ~1800W

Profile: Balanced system design

Result: Stable power under load

50A System

Motor Range: 1500W–2000W

Peak: ~2400W

Profile: High torque output

Result: Maximum acceleration capability


4. System Engineering & Performance Analysis
4.1 Core System Constraints

BMS current rating alone does not define performance. Real output depends on: motor controller current limit (primary constraint), battery internal resistance (Samsung 21700 chemistry behavior), voltage sag under load, and thermal conditions during discharge. A higher-rated BMS provides system headroom but does not increase performance if the controller is the limiting factor.

4.2 Efficiency & Range Impact by BMS Rating

Based on 48V 30Ah system configuration, moderate pedal assist, flat terrain, and ~160lb rider weight:

30A configuration: Highest efficiency, lowest heat generation, longest range per charge. 40A configuration: Balanced efficiency and performance, stable output under sustained load. 50A configuration: Maximum power delivery, higher consumption under aggressive acceleration.

4.3 JBD Integrated Protection Architecture

All JBD BMS modules include the following protection layers regardless of current rating: Over-current protection (calibrated to continuous rating), Over-voltage / under-voltage cell-level cutoff, Active cell balancing system, Short circuit protection, Temperature monitoring with thermal cutoff.

Proper BMS selection ensures both system performance and long-term lithium cell durability. The protection features operate independently of the discharge current rating, providing consistent safety margins across all JBD 30A, 40A, and 50A configurations.


5. FAQ
Q: Does higher BMS current increase eBike speed?
No. Speed is mainly controlled by the motor controller, not the BMS rating.
Q: Can I use a 50A BMS on a 1000W motor?
Yes, but it is not necessary unless future upgrades or higher current draw are expected.
Q: What happens if BMS is undersized?
The system may trigger over-current protection or shut down under peak load.
Q: What is the most efficient setup for 48V 30Ah?
30A configuration provides the highest efficiency and longest range under normal riding conditions.

6. System Recommendation

If you are unsure, choose based on controller rating rather than motor wattage. This ensures optimal safety and performance balance.

Complete JBD BMS selection system for 48V 30Ah lithium batteries. Compare 30A, 40A, and 50A discharge options with real motor compatibility, range impact, and system-level design logic for eBikes and electric scooters. Designed and assembled by BOOANT.

48V 30Ah Lithium Battery – Built with Real Samsung 50G Cells

Samsung INR21700-50G · 13S6P · JBD Smart BMS with Bluetooth

True 30Ah capacityNot inflated ratings
60–90km real-world rangeDepending on system
Smart Bluetooth BMSFull monitoring
High-reliability designFor eBike systems
48V
Nominal
30Ah
Capacity
1,440Wh
Energy
6.0kg
13.2 lbs
Weight
295×135×75
11.6×5.3×3.0 in
mm (L×W×H)
🔋 Battery Pack & Samsung Cells – Technical Specifications
Configuration13S6P (78 cells)
Cell modelSamsung INR21700-50G
Cell capacity5,000mAh (typical)
Cycle life≥1000 cycles (to 80% capacity)
Charge cut-off54.6V (4.2V/cell)
Discharge cut-off32.5V (2.5V/cell)
BMSJBD Smart (Bluetooth)
Continuous current30A / 40A / 50A
Charger54.6V / 5A CC-CV
Charge time~5h (80%) / 6–7h (full)
Charge temp0°C – 45°C
Discharge temp-20°C – 60°C
⚡ Why this battery is different
Most batteries on the market
This pack
  • Use recycled or unknown cells
  • Inflate capacity numbers
  • Lack real BMS monitoring
  • Uses authentic Samsung INR21700-50G cells
  • True 13S6P architecture (78 cells)
  • JBD Smart BMS with Bluetooth & app

📋 Fully transparent technical specification — every detail documented below. No hidden compromises.

🔧 Ideal for 1000W–2000W eBike systems Long-range commuting Delivery / daily heavy use DIY conversion projects
📋 Operating & Storage Guidelines

State of Charge (SOC)

  • Daily cycling: 20% – 90% SOC
  • Long‑term storage: 40% – 60% SOC
  • Avoid storing at 100% or <10% SOC

Temperature & Protection

  • Ideal ambient: 15°C – 25°C
  • Do not operate ≥50°C or ≤-30°C
  • ⚠️ Avoid impact, puncture, water ingress
🔋 Long‑term storage: Maintain 40–60% SOC at 15–25°C. Perform a brief charge/discharge cycle every 3 months.

Technical specification for 48V 30Ah (1440Wh) lithium battery. Authentic Samsung INR21700-50G cells, 13S6P, JBD Smart BMS. True capacity, real-world range, full specifications. Designed and assembled by BOOANT.