Home / Products / 48V 30Ah Triangle E-Bike Battery | Samsung 50G Cells

48V 30Ah Triangle E-Bike Battery Pack

Engineered for long-range DIY e-bike builds. Built with 78 genuine Samsung 21700 cells inside a low-center-of-gravity triangle format, backed by full Bluetooth telemetry and 5A fast charging.

Energy
48V 30Ah
1,440Wh capacity
Cell Array
50G
Samsung 21700 · 13S6P
Smart BMS
JBD
Bluetooth App link
Charger
5A
Full top-off ~6–7h
Low Center of Gravity
Mounts in the front triangle to eliminate rear-rack wobble and stabilize high-speed cornering.
Epoxy & Top Seal
Internal epoxy sheets prevent friction wear; heavy PVC wrap with sealed top blocks road spray.
App Live Diagnostics
Read individual cell delta voltages, pack temp, and cut charging/output remotely via phone.
Zero-Sag 6-Parallel Build
Distributes continuous load across 78 cells to stop steep-incline voltage drops.

Technical Specifications

Power Architecture
Total Energy 48V 30Ah (1,440Wh)
Cell Model Samsung 21700 50G
Configuration 13S6P (78 Cells)
Fast Charger 54.6V 5A (~6–7 hrs)
Lifespan 800+ Cycles (80% DoD)
Dimensions & Geometry
Net Weight ~5.5 kg / 12.13 lbs
Triangle Sides 265 × 220 × 190 mm
Bevel Corners 90 × 70 mm
Pack Thickness 80 mm (3.15 in)
Inches (Main) 10.43" × 8.66" × 7.48"
*Manual seal tolerance applies. Allow slight clearance for frame wiring.
Safety & Environment
Smart BMS JBD Bluetooth App
Internal Shield Epoxy Sheet Layers
Outer Shell PVC Wrap + Top Seal
Discharge Temp -20°C to 60°C
Warranty 2-Year Limited

Smart JBD BMS & Motor Power Guide

Select the matching continuous discharge rating for your hub or mid-drive motor build.

Daily Commute & Efficiency
30A BMS
Up to 1000W Motors
Continuous Current 30A (1,440W continuous)
Peak Current 90A Peak
Bluetooth Telemetry Full App Control
Estimated Range (1,440Wh)
PAS Pedal Assist: 65 – 85 miles (105 – 135 km)
Pure Throttle: 35 – 45 miles (55 – 70 km)
All-Around Trail & Torque
40A BMS
Up to 1500W Motors
Continuous Current 40A (1,920W continuous)
Peak Current 120A Peak
Bluetooth Telemetry Full App Control
Estimated Range (1,440Wh)
PAS Pedal Assist: 50 – 70 miles (80 – 110 km)
Pure Throttle: 30 – 40 miles (48 – 65 km)
High-Power & Steep Climbing
60A BMS
Up to 2000W Motors
Continuous Current 60A (2,880W continuous)
Peak Current 180A Peak
Bluetooth Telemetry Full App Control
Estimated Range (1,440Wh)
PAS Pedal Assist: 40 – 60 miles (65 – 95 km)
Pure Throttle: 25 – 35 miles (40 – 55 km)
Real-World Range Baseline: Estimates reflect a 175 lb (80 kg) rider on flat asphalt at moderate cruising speeds (~20 mph / 32 km/h). Real-world range varies with rider payload, tire rolling resistance, wind drag, ambient temperature, and continuous hill climbing.

Custom Discharge Connectors

Pre-soldered to your controller specs. Ships with matching male and female pairs.

XT90 / XT90-S
Anti-Spark Option
Standard high-drain connector. Built-in spark resistance protects BMS circuits on plug-in.
Anderson
Modular Quick-Swap
Genderless heavy-duty contact clips. Clean plug-and-play fit for popular aftermarket controllers.
QS8-S
Heavy-Duty Anti-Spark
Engineered for 60A continuous high-draw rigs and high-current peak bursts without heat buildup.
XT60 / XT60H
Compact High-Current
Slim footprint with secure insulated sheath. Ideal for tighter triangle bag internal routing.
Need a custom connector? Leave your exact connector type (or cable length requirement) in the order notes at checkout, and our technicians will solder and heat-shrink it before packing.

54.6V 5A Smart Fast Charger

All-metal active cooling build. Engineered to cut recharge downtime while preserving cycle health.

Heavy-Duty Hardware
Enclosure Rugged Aluminum Metal Body
Thermal Control Built-In Active Cooling Fan
AC Input Interface Standard Detachable AC Socket
AC Line Protection Replaceable 250V AC Fuse
DC Output Protection 250V / 10A Charging Fuse
LED Status Indicators
Red Light
Actively charging (constant current/voltage) or charging error detected.
Green Light
Pack is 100% full. Auto-cuts charging current to prevent overcharge.

FAQ

Real answers to setup, charging, and motor sizing questions.

Why is my 48V battery reading 54.6V when fully charged?
That is completely normal. A 48V lithium-ion pack is built in a 13S configuration (13 cells in series). Each Samsung cell charges up to 4.2V, meaning a 100% full pack rests at exactly 54.6V (13 x 4.2V). When it nears empty, voltage drops to around 39V.
Will the 5A fast charger degrade the Samsung 50G battery lifespan?
Not at all. This pack has 6 cells in parallel (13S6P, 30Ah total). A 5A charging current divides evenly across the 6 parallel banks, meaning each individual cell receives less than 0.84A. Samsung 50G cells easily handle up to 1.5A to 2.4A standard charging, so 5A is well within the sweet spot for preserving cycle life.
Which BMS current rating should I choose: 30A, 40A, or 60A?
Match the BMS rating to your motor controller's maximum amp draw. For standard 750W–1000W motors, the 30A BMS is ideal. For 1000W–1500W setups, pick 40A. For 1500W–2000W+ high-draw builds or steep off-road trail climbing, choose 60A to avoid tripping current cutoff.
How do I monitor the battery using the JBD Smart Bluetooth BMS?
Download the Xiaoxiang (or Overkill Solar / JBD BMS) app on iOS or Android. Turn on your phone's Bluetooth, open the app, and select your pack from the device list. You can view individual cell voltages, temperature probes, charge/discharge cycles, and remotely toggle the power switch.
Is this triangle battery pack waterproof for wet trail riding?
The pack features an internal epoxy board cage, a heavy-duty PVC heat-shrink outer wrap, and top waterproof silicone sealant to block wet road splash and light rain. However, no shrink-wrapped pack is submersible. For heavy downpours or muddy trail riding, we strongly recommend placing it inside a water-resistant triangle frame bag.
What is covered under the 2-Year Limited Warranty?
The 2-year warranty covers internal manufacturing defects, cell voltage drop anomalies, and BMS hardware failures under normal riding conditions. We supply replacement parts or pack servicing. Physical impact damage, water submersion, or unauthorized pack modifications are excluded.

Built-To-Order & Global Delivery Pipeline

No aged warehouse inventory. Every pack is freshly built and fully load-tested before dispatch.

01 Fresh Assembly

Built on demand using recently batched Samsung 50G cells. Eliminates the capacity degradation of packs sitting on shelves for months.

02 100% Load-Tested

Undergoes a complete automated charge-discharge cycle. Verifies continuous amp delivery, cell millivolt delta, and BMS thermal safety.

03 DDP Door Delivery

Dispatched via FedEx/UPS (US/CA) or DPD/DHL (EU) with tracking. Typical transit takes 15–20 business days with zero surprise customs fees.

Zero Old Stock Guarantee
Customs Duties & Taxes Included (DDP)
Insured Tracked Freight