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SKU: 39

48V 20Ah Triangle E-Bike Battery

All4ebikes
All4ebikes
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Description

48V 20Ah Triangle E-Bike Battery – Frame-Mounted Lithium Pack for Balanced Handling

The 48V 20Ah triangle battery mounts inside the frame triangle for a low, centred weight position and balanced handling on mid-power conversion kits. Built around 13 cells in series, it pairs naturally with 500W–1500W hub motor systems that benefit from a sportier weight distribution than a downtube pack.

48V 20Ah ~960Wh Triangle Design LCD Display USB Port ~6 kg

The triangle design is built specifically for the bicycle frame: the slim profile and optimised shape allow direct mounting in the frame triangle, without affecting ground clearance or unbalancing the bike's geometry. Weight is distributed low and centred, which means better stability through corners and at higher speeds compared to a rack-mounted battery.

48V 20Ah Triangle Battery Technical Specifications

Electrical Parameters

Nominal voltage48V
Max voltage (charging)54.6V
Rated capacity20Ah
Total energy~960Wh
Cell configuration13S
Cell typeLG/Samsung
BMS40A
Protection ratingIP65
Charge cycles800–1000

Dimensions and Construction

Approximate dimensions330x220x88
Approximate weight5.6–6.1 kg
CasingRigid
Mounting systemStraps
Power connectorXT60

Display and Connectivity

DisplayBuilt-in LCD
IndicatesVoltage/status
USB portYes
On/off switchWith LED
ChargerIncluded

Why the 13S configuration suits mid-power triangle builds

The 13S configuration means 13 cells connected in series, each contributing around 3.6–4.2V to the pack's total voltage. This delivers the standard 48V used by mid-power conversion kits, with the triangle's parallel cell layout supporting the 40A BMS rating needed for sustained climbs and cargo use.

BMS and cell protection

The battery integrates a 40A BMS, built with quality LG/Samsung cells, which monitors voltage, temperature and current per cell in real time, preventing overcharging, deep discharge and cell imbalance. The IP65-rated casing protects against light rain and splashes in normal use.

Recommendation: the maximum current set on the controller must stay within the BMS discharge limit. An oversized controller can force the BMS into protection mode.

What Type of Conversions It's Recommended For

500W–1500W Hub Motors

The 48V voltage and 40A BMS comfortably support mid-power conversion kits across the range.

Mid-Drive Conversions

Increased pedal-assist torque, suitable for hilly routes or intensive electric MTB use.

Balanced Handling Builds

For riders who prioritise low, centred weight and a more natural bike feel over the largest possible capacity.

Installation, Maintenance and Safety

Installation Steps

  • Check dimension compatibility with the space in the frame
  • Secure the battery with the mounting straps
  • Connect respecting polarity and connector type
  • Check the LCD before first use

Maintenance

  • Avoid discharging fully below 20%
  • Store at 50–70% capacity for long periods
  • Charge in a ventilated space, never unattended
  • Avoid temperatures below 0°C or above 40°C

Frequently Asked Questions About the 48V 20Ah Triangle Battery

What range does a 48V 20Ah battery offer?
Range depends on motor power, total weight and terrain type. For 500W–1000W systems, estimated range is roughly between 55 and 85 km per charge cycle.
Is the battery compatible with any bicycle frame?
The triangle shape adapts to most frames with enough space between the tubes. For very small frames or atypical geometry, check dimensions before ordering.
How long does a full charge take?
The battery comes with a charger included and reaches a full charge in approximately 5–6 hours.
Why choose a triangle battery over a downtube one at the same voltage?
The triangle mount keeps weight centred and low in the frame, which many riders feel improves handling balance compared to a downtube position, especially on bikes used for varied terrain.

Details

SKU
39
Categories
Triangle Batteries
Weight
6 kg
Brand
All4ebikes
Dimensions
352x235x90mm
Capacity
20Ah
Voltage
48V

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