Home / Products / BOOANT 48V 20Ah Triangle E-Bike Battery – Samsung 50G

BOOANT Premium 48V 20Ah Triangle Lithium Battery

Finding the perfect balance between frame space and long-range power is always the toughest part of a custom build. The BOOANT 48V 20Ah triangle battery solves that. It packs a massive 960Wh of available energy right into the natural center of your bicycle frame, giving you maximum range without ruining your bike's handling.

No marketing gimmicks or generic mystery cells. This pack runs entirely on genuine Samsung 21700-50G commercial-grade cells wrapped in a high-density, weather-resistant PVC film matrix. It is engineered to hold a flat, stable voltage curve even under continuous mid-drive loads.

Battery Energy
960 Wh
Optimized power for mid-drive & hub setups
Rated Capacity
20 Ah
True capacity for extended daily commuting
Cell Matrix
Samsung 50G
Premium 21700 cells for peak life cycles

Genuine Samsung Cells

Built with 52 commercial-grade 21700-50G cells. Better thermal stability and lifespan than generic budget packs.

Perfect Center Fit

Triangle configuration maps perfectly to your bicycle frame. Keeps weight low and balanced for a natural riding experience.

JBD Smart Bluetooth

No more guessing. Open the phone app to read individual cell voltages, live amp draw, and exact cell temperatures on the fly.

Controller Plug Options

Tailored to your setup. Choose from XT60, XT90-S anti-spark, or Anderson connectors built straight onto the power leads.

Technical Specifications

Key specs at a glance for system planning.

Battery & Cell System
Voltage / Capacity 48V (13S) / 20Ah (960Wh)
Cell Brand & Type Samsung INR21700-50G (52 Genuine Cells)
Housing / Cut-off Premium High-Density PVC Wrap / 39V Cut-off
Smart BMS & Compatibility
BMS Type JBD Bluetooth Smart BMS (Official Xiaoxiang App)
BMS Options 30A Continuous (500W-1000W) · 40A Continuous (1000W-1500W)
Protections Overcharge, Over-discharge, Overcurrent, Short Circuit, Temp Protection
Temperature Charge: 0 to 45°C  |  Discharge: -20 to 60°C
Charger & Physical Specs
Smart Charger WATE 54.6V 5A Charger (CC/CV) · ~4 Hours Charge Time
Form Factor & Fit Triangle Design · Fits efficiently inside bicycle frame triangle
Warranty 2-Year Limited Warranty with Professional Tech Support

Specifications based on standard build. Actual metrics may vary slightly with custom configurations.

BMS Discharge Current & Motor Matching

Don't guess your setup. Match your e-bike controller's amp draw and motor wattage with our pre-configured JBD Smart BMS setups. Selecting the right map ensures peak efficiency and prevents safety cut-offs under heavy loads.

Standard Setup
30A Continuous
For 500W - 1000W Motors
Optimized for standard commuter e-bikes & mild trails
Perfect matching map for legal street-riding mid-drives
Est. Range: 45 - 60 miles (Pedal Assist mode)
Best Choice
High Torque Sweet Spot
40A Continuous
For 1000W - 1500W Motors
Built for heavy acceleration & steep hill climbs
Prevents safety cut-offs on custom DIY conversion kits
Est. Range: 35 - 45 miles (Mixed heavy throttle)
Rider's Tech Note: Always make sure your e-bike controller's maximum current draw does not exceed the continuous rating of your chosen BMS. Running a 40A controller on a 30A BMS will trigger safety shut-offs under steep hill climbs.
FAQ
1. Triangle frames vary a lot. How do I know this will actually fit my bike?
Every bicycle frame triangle has slightly different angles. To save us both the headache of shipping a battery that is an inch too tight, use the cardboard dummy test. Take a piece of flat shipping cardboard, draw out the shape matching our physical size specs, cut it out with scissors, and try sliding that flat cardboard piece straight into your bike frame triangle. If the cardboard piece fits with a little bit of breathing room left over for your frame bag straps and power cables, the real pack will drop in perfectly.
2. What do the red and green lights on the charger actually mean?
Don't overcomplicate the charger lights, it is just basic hardware signals. When you plug the WATE charger into your wall outlet alone, it shows a solid green light, meaning it is getting power from the house. The exact second you hook it up to your battery pack, it flips to solid red, telling you it is actively fast-charging at 5 amps. Once the Samsung cells hit full capacity, the internal smart switch shuts off power automatically to protect the core, and the light flips right back to solid green. If you ever see a solid or flashing red light when something seems wrong, that is a system fault signal. Unplug everything immediately and check your JBD app screen to see what got triggered.
3. What is the real-world benefit of paying more for these Samsung cells?
Cheap generic cells work okay if you are just cruising flat pavement at low speeds, but they cannot handle high-amp continuous loads. The moment you push a generic pack on a steep incline or a heavy mid-drive build, the voltage sags, your power drops instantly, and the cells get hot. Samsung 50G cells hold their voltage flat and stable under heavy draw, meaning your bike keeps its top-end speed throughout the entire ride. Plus, they maintain their total lifecycle capacity for years instead of dying out after one hard riding season.
4. Why is this triangle pack built with a PVC wrap instead of a metal box case?
For triangle builds designed to live inside a protective frame bag, a hard metal box adds unnecessary bulk and heavy dead weight right where you don't want it. We lock this cell matrix inside an ultra-thick, high-density industrial PVC wrap film. This keeps the battery incredibly compact, maximizes your limited frame space, and shaves off weight. It gives you a clean, lightweight setup that absorbs natural frame vibrations comfortably without rattling your internal welds loose.
5. How do I actually read the JBD Bluetooth app monitor?
Just grab the official JBD Xiaoxiang app from your regular phone app store. Turn on your phone's bluetooth, turn on your bike system to wake the pack up, and connect to the device. The screen shows you exactly what is happening inside. You don't need to be a technician to understand it. It displays your real-time total percentage, individual cell group balance, live operating temperatures, and exactly how many amps your controller is pulling when you pin the throttle.
6. Can I get a specific type of power connector to match my controller wires?
Yes, we deal with custom DIY setups all day long. While the stock battery ships with standard thick leads, we can weld on whatever specific plug your rig uses—whether that is a standard XT60, an Anderson, or a heavy XT90-S anti-spark plug to protect your electronics. Just drop a clear note detailing exactly what connector type you need in the cart box right before checking out, or message our staff directly after you pay so the warehouse doesn't ship a standard unit by mistake.
7. What is the proper way to store this triangle pack over the cold winter?
Lithium packs hate sitting at dead empty (0%) or stuffed at full capacity (100%) for months in freezing temperatures. When you are putting your build away for the off-season, run the battery down or charge it up until the app shows around 50% to 60%. Bring the pack inside your house where it stays dry and warm. Leave it alone, but set a quick phone reminder to plug it into the 5A charger for about 20 minutes every two months just to keep the cell matrices happy.