Home / Products / 52V 20Ah eBike Triangle Battery | Samsung 50G Cells

52V 20Ah Triangle E-Bike Battery Pack (1040Wh)

Engineered for high-power frame-mount builds. Built with 56 genuine Samsung 21700 cells in a protective ABS hard shell, paired with Bluetooth live cell tracking and a high-current 5A fast charger.

52V
Nominal Voltage
20Ah
Total Capacity
56x
Samsung 21700 50G
5A
Fast Charger

Grade-A Samsung 21700 50G

14S4P configuration delivers sustained high-current draw with minimal voltage sag under load. Zero generic cells.

Rigid ABS Hard Shell & 5V USB

Durable triangle enclosure shields against impacts and frame vibrations. Includes a push-button LED fuel gauge and 5V phone charging.

Smart JBD Bluetooth BMS

Track individual cell voltages, temperature, and live discharge rates via smartphone app. Remotely toggle charge/discharge gates.

58.8V 5A Smart Fast Charger

Refuels the 20Ah pack significantly faster than standard 2A units. Active fan cooling and auto-cutoff prevent overcharging.

Technical Specifications

Electrical & Battery Chemistry
Nominal Voltage / Energy
52V / 1040Wh
Rated Capacity
20Ah (0.2C discharge rate)
Battery Cell Type
Authentic Samsung 21700 50G (5000mAh Grade-A)
Cell Configuration
14S 4P (56 Total Cells)
BMS Protection System
Smart JBD BMS with Integrated Bluetooth App
Charging & Auxiliary Output
Charger Specifications
58.8V 5A Smart Fast Charger (Active Cooling Fan)
Charge Cut-off / Standard Time
58.8V ± 0.05V / Approx. 4.0 – 4.5 Hours
USB Port Output
5V 2A (Integrated Mobile Device Charging)
External Controls
Physical Power Switch & Multi-segment LED Fuel Gauge
Dimensions, Weight & Casing
Geometry Dimensions
Length: 375 mm (14.76 in) × Height: 235 mm (9.25 in) × Hypotenuse: 410 mm (16.14 in)
Thickness / Depth
90 mm (3.54 in)
Total Pack Weight
Approx. 5.5 kg (12.13 lbs)
Enclosure Material
High-Impact Molded ABS Rigid Hard Shell
Operating Environment & Warranty
Charge Operating Temp
0°C to 45°C (32°F to 113°F)
Discharge Operating Temp
-20°C to 60°C (-4°F to 140°F)
Optimal Storage Temp
10°C to 25°C (50°F to 77°F) at 50% SoC
Manufacturer Warranty
2-YEAR WARRANTY

Smart JBD BMS & Motor Compatibility

Select the continuous discharge current that matches your controller and motor power. All options include full Bluetooth cell monitoring and programmable low-voltage cutoffs.

Standard Setup
30A Continuous
  • Target Motor: Up to 1000W
  • Peak Current: 90A (≤ 1 sec)
  • Best Suited For: Commuters / BBS02
Estimated Real Range
40 – 70 miles (65 – 110 km)
High Output
40A Continuous
  • Target Motor: Up to 1500W
  • Peak Current: 120A (≤ 1 sec)
  • Best Suited For: BBSHD / 1500W Direct
Estimated Real Range
30 – 55 miles (50 – 90 km)
Peak Performance
50A Continuous
  • Target Motor: Up to 2000W
  • Peak Current: 150A (≤ 1 sec)
  • Best Suited For: Custom High-Power Builds
Estimated Real Range
25 – 45 miles (40 – 70 km)
Range Notice: Estimates are based on real-world riding with a 170 lb (77 kg) rider on flat to rolling terrain with moderate pedal assist. Aggressive full-throttle riding, steep hill climbing, headwind, cold weather, and higher motor loads will shorten total mileage.

58.8V 5A Smart Fast Charger

Engineered for fast turnarounds, cool thermal performance, and dependable garage safety. Built with a solid aluminum housing, intelligent CC/CV circuitry, and full auto-shutoff protection.

5A Output
~4.0 – 4.5 Hr Full Refuel

Smart CC/CV Multi-Stage Charging

Regulates high current safely during rapid charging, then fine-tunes constant voltage as the pack tops off to keep cell banks balanced without thermal stress.

Heavy-Duty Aluminum Shell

Durable alloy housing dissipates heat rapidly and protects internal electronics from impacts.

Active Fan Cooling

Integrated high-flow fan keeps internal components cool and prevents throttling during high-amp cycles.

Intelligent Auto Cut-Off

Terminates charging immediately upon reaching full 58.8V capacity to prevent continuous trickle wear.

Multi-Layer Safety Circuit

Built-in protections against short circuits, over-voltage, reverse polarity, and thermal runaway.

FAQ

Clear answers to common questions about fitment, BMS rating, Bluetooth setup, and real charging times.

Will this triangle battery fit my specific bike frame?

This battery measures 375 mm (14.76 in) long, 235 mm (9.25 in) high, 410 mm (16.14 in) along the hypotenuse, and 90 mm (3.54 in) thick.

Before ordering, cut out a simple cardboard template matching these dimensions and place it inside your bike triangle. Make sure your frame has enough clearance for the 90 mm width and cable routing.

Which BMS option should I choose: 30A, 40A, or 50A?

Match the BMS continuous rating to your motor controller limit:

30A BMS: Perfect for 48V/52V 750W–1000W setups (like Bafang BBS02 or stock direct-drive hub motors).

40A BMS: Ideal for 1000W–1500W systems (like Bafang BBSHD with upgraded current limits).

50A BMS: Recommended for 1500W–2000W high-power custom builds and steep hill climbing.

Are these authentic Samsung 21700 50G cells or generic cells?

Every single pack is built with 56 genuine Grade-A Samsung INR21700-50G cells in a 14S4P configuration. We never mix generic or B-grade cells. You can verify real-time individual cell voltages and balance health directly inside the Bluetooth app.

How does the Smart JBD Bluetooth app work?

Simply download the free xiaoxiangBMS (or compatible JBD app) on iOS or Android. Connect to the battery via Bluetooth without pairing passwords.

The app shows live pack voltage, individual cell delta, real-time discharge/charge amps, battery temperature, and remaining capacity in real time.

How long does a full charge take with the included 5A charger?

A full charge from empty takes approximately 4.0 to 4.5 hours using the included 58.8V 5A aluminum fast charger. The built-in cooling fan runs during high-rate charging, and power shuts off automatically once the battery hits 58.8V.

What is covered under the 2-Year Warranty?

We provide a full 2-year warranty covering the internal cell pack integrity, BMS board, and included 5A charger against manufacturer defects. If you experience unexpected capacity drop or hardware faults under normal riding conditions, we provide replacement parts or pack service.

Built-To-Order & Shipping Process

01

Fresh Built-To-Order

Every battery pack is custom built directly upon your order rather than pulled from sitting warehouse shelf stock. This guarantees maximum fresh chemical cycle life, zero capacity degradation, and optimal cell health from day one.

02

Authentic Cells & Full Test

We source original grade-A Samsung cells straight from official distributors per order. Once assembled, every pack undergoes a full charge and discharge test cycle to verify capacity, BMS balance, and thermal safety before final packing.

03

Door-To-Door Freight

Packs pass Hong Kong customs battery safety inspection and ship direct to your door via FedEx/UPS (US/CA) or DPD/DHL (EU). Delivery typically takes 15–20 business days. All import duties, taxes, and door-step delivery are fully covered.