Home / Products / 52V 25Ah eBike Triangle Battery | SAMSUNG 50G Cells

52V 25Ah Triangle E-Bike Battery

Built for serious DIY builders and long-range riders who need raw, reliable power. We packed 70 original Samsung 21700 50G cells into a rugged triangle ABS shell designed to lock tight inside your frame triangle.

1,300Wh
Total Energy Capacity
50GCell
Samsung 21700 14S5P
58.8V 5A
Fast Smart Charger
5V 2A
Built-in USB Out

Grade-A Samsung 50G Cells

Genuine 21700 5000mAh cells arranged in a 14S5P configuration. Low voltage sag under heavy throttle with 800+ life cycles.

Smart JBD Bluetooth BMS

Check cell voltages, pack temperature, and active amp draw right from your phone. Toggle charge/discharge ports anytime.

Heavy-Duty Triangle ABS Shell

Hard-cased against rock strikes, trail vibration, and splashes. Fits cleanly into standard bicycle triangle geometry.

Power Switch, LED & USB Port

Integrated physical power switch cuts idle parasitic drain. Includes an instant LED fuel gauge and 5V 2A phone charging.

Technical Specifications

Accurate lab-tested data for builders and frame fitment

01 Physical & Frame Fitment
Battery Dimensions 375 × 235 × 410 mm (Hypotenuse) × 90 mm
14.76" × 9.25" × 16.14" (Hypotenuse) × 3.54"
Net Pack Weight Approx. 6.5 kg (14.33 lbs)
Enclosure Material High-Impact ABS Plastic Hard Case (Water/Dust Resistant)
Physical Interface Integrated ON/OFF Rocker Switch, LED Fuel Gauge, USB 5V 2A Port
02 Battery & Electrical Specs
Nominal Voltage / Capacity 52V / 25Ah (1,300Wh Total Energy)
Internal Cell Structure Samsung 21700 50G (5000mAh) — 14S 5P (70 Cells Total)
Charge Cut-off Voltage 58.8V ± 0.05V
Discharge Cut-off Voltage 39.2V – 42.0V
Cycle Life 800+ Cycles (to 80% original capacity under standard use)
03 Smart Management & Charging
BMS Protection System Smart JBD BMS with Bluetooth (iOS / Android App connectivity)
BMS Safety Protections Over-charge, Over-discharge, Over-current, Short-circuit, Cell Balance
Standard Fast Charger 58.8V 5A Smart CC/CV Charger (Included)
Approximate Charge Time ~5.0 – 5.5 Hours (from 0 to 100%)
04 Environment & Warranty
Operating Temp (Discharge) -20°C to 60°C (-4°F to 140°F)
Operating Temp (Charge) 0°C to 45°C (32°F to 113°F)
Storage Temp (Recommended) 10°C to 25°C (50°F to 77°F) @ 50%-70% SOC
Warranty Coverage 2-Year Official Warranty Covers BMS & Cell manufacturing defects

Smart JBD BMS & Motor Matching

Select the right continuous discharge rate to match your motor controller setup

Commuter & Cruising
30A Continuous
Peak Discharge: 90A
Recommended Motor
Up to 1000W Motors
Best Fit For
Bafang BBS02, 750W-1000W Hubs
Estimated Range / Charge
40 – 50 Miles (Throttle only)
70 – 90 Miles (Pedal assist)
All-Rounder Power
50A Continuous
Peak Discharge: 150A
Recommended Motor
Up to 2000W Motors
Best Fit For
Bafang BBSHD, 1500W-2000W DD Hubs
Estimated Range / Charge
30 – 40 Miles (Throttle only)
55 – 75 Miles (Pedal assist)
High-Torque Performance
60A Continuous
Peak Discharge: 180A
Recommended Motor
Up to 2500W Motors
Best Fit For
High-amp custom controllers & hills
Estimated Range / Charge
25 – 35 Miles (Aggressive throttle)
45 – 65 Miles (Pedal assist)
* Real-World Range Disclaimer: Range figures above are realistic estimates based on a 170 lb (77 kg) rider cruising at 20–25 mph on flat paved roads. Actual mileage varies depending on total payload, terrain grade, wind resistance, tire pressure, and throttle aggressiveness.

58.8V 5A Smart Fast Charger Included

Engineered specifically for 14S 52V lithium packs with advanced thermal and over-voltage management.

Cuts Downtime by More Than Half

Standard 2A chargers take up to 12.5 hours for a 25Ah pack. Our 5A fast charger tops you up in ~5 hours safely.

~5.0 Hrs
0 to 100% Full Charge

Automatic CC/CV Staging

Delivers constant current for quick topping, then transitions into constant voltage to gently balance every individual cell.

Active Silent Cooling Fan

Built-in high-speed brushless fan exhausts internal heat continuously, keeping the aluminum casing cool under full 5A load.

Dual-Color Status LED

Clear visual feedback at a glance. Solid Red indicates active fast charging; Solid Green confirms complete balance and cut-off.

Multi-Layer Circuit Protection

Equipped with automatic cut-off for short-circuit, reverse polarity, over-voltage, and internal overheating safety.

FAQ

Clear, straightforward answers about battery fitment, Bluetooth BMS setup, and long-term care.

Can I run this 52V battery on my 48V e-bike motor and controller?
Yes, in almost all cases. Most 48V motor controllers (including Bafang BBS02, BBSHD, and common hub motor controllers) use 63V-rated capacitors, meaning they handle a fully charged 52V pack (58.8V max) with ease. You'll get a bit more top speed, better throttle response, and less voltage sag on steep climbs. If your display shows a 48V battery gauge, set it to 52V in settings for accurate percentage readouts.
Which BMS rating should I choose: 30A, 50A, or 60A?
Match the BMS continuous rating to your motor controller’s maximum amp draw. For standard 750W–1000W motors, the 30A BMS is plenty. If you are running a 1500W–2000W setup or BBSHD with unlocked current, choose the 50A BMS. For 2000W–2500W+ high-torque hub builds pulling heavy continuous amps, grab the 60A version to avoid BMS thermal trip-outs.
How do I connect the Smart JBD BMS to my phone?
Download the "xiaoxiang BMS" (or "Smart BMS" / "VBMS") app from the iOS App Store or Google Play Store. Turn on the battery power switch and enable Bluetooth on your smartphone. Open the app, search for nearby devices, and tap your battery to pair without manual pairing codes. From the dashboard, you can monitor real-time individual cell voltages, temperature sensors, total cycle count, and toggle charge/discharge switches.
Why does the charger output 58.8V, and is 5A charging safe for 25Ah?
A 52V battery consists of 14 cell groups in series (14S). Because each cell charges to 4.20V max, 14 × 4.2V = 58.8V full charge cut-off. A 5A charging rate across a 5-parallel (5P) 25Ah pack translates to just 1.0A per cell—well within Samsung 50G’s recommended 2.5A charging spec. It charges the whole pack in ~5 hours without generating excessive heat or reducing cycle life.
Can I ride with this triangle battery in heavy rain?
The ABS hard shell provides excellent splash and dirt protection against wet roads and light-to-moderate rain. However, no e-bike battery is 100% submersible. Avoid power washing the battery seams directly, and ensure the rubber dust caps on the charging and USB ports are tightly sealed before hitting wet trails.
How should I store the battery during the off-season or winter?
Charge or discharge the battery to roughly 50%–60% (around 51V–53V) before storing. Turn off the main power switch to eliminate parasitic draw, and keep the pack indoors at room temperature (50°F to 77°F / 10°C to 25°C). Check and top up the voltage every 60 to 90 days. Never store the pack completely empty (0%) or at 100% in freezing temperatures.
What does the 2-Year Official Warranty cover?
Our 2-year limited warranty covers manufacturing defects in the Samsung 21700 50G cell structure, internal nickel strip welds, and the Smart JBD BMS hardware. If you experience abnormal cell balance failure or BMS hardware issues under normal riding conditions, we provide replacement components, repair service, or full pack exchange support.

Built-To-Order & Shipping Process

1

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.

2

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.

3

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.