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  • 48V 17.5Ah Downtube E-Bike Battery - Img 1
  • Suport baterie downtube eBike cu șină de montare pentru cadru bicicletă
SKU: 35

48V 17.5Ah Downtube E-Bike Battery

All4ebikes
[1]
All4ebikes
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Description

48V 17.5Ah Downtube E-Bike Battery – High-Capacity Lithium Pack for Electric Bicycles

This 48V 17.5Ah downtube lithium battery is built for riders who need solid range, stable performance and efficient power delivery for electric bikes and conversion kits. Built around 13 cells in series, it's the natural match for 500W–1000W hub motor conversions.

48V 17.5Ah ~840Wh Downtube Design LCD Display USB Port ~5 kg

The downtube format places the battery along the bicycle's down tube, using a standard mounting bracket and key lock to keep weight low and centred for balanced handling. Ideal for urban commuting, trekking, MTB and long routes, this battery delivers steady power and extended range for a comfortable, reliable ride.

48V 17.5Ah Downtube Battery Technical Specifications

Electrical Parameters

Nominal voltage48V
Max voltage (charging)54.6V
Rated capacity17.5Ah
Total energy~840Wh
Cell configuration13S
Cell typeLG/Samsung
BMS35A
Protection ratingIP65
Charge cycles800–1000

Dimensions and Construction

Approximate dimensions395x92x90
Approximate weight4.7–5.1 kg
CasingRigid
Mounting systemBracket + key lock
Power connectorXT60

Display and Connectivity

DisplayBuilt-in LCD
IndicatesCharge level
USB portYes
On/off switchWith LED
ChargerIncluded

Why the 13S configuration matters for 48V systems

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 48V used by the majority of mid-power conversion kits, giving a good balance of torque, top speed and range compared to 36V packs.

BMS and cell protection

The battery integrates a 35A 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 road 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–1000W Hub Motors

The 48V voltage and 35A BMS comfortably support mid-power hub motor controllers without strain.

Urban and Trekking Commuting

Solid range for daily commutes and longer trekking routes without sacrificing weight or handling.

DIY eBike Projects

A reliable, well-protected energy source for custom builds using brushless hub motor systems.

Installation, Maintenance and Safety

Installation Steps

  • Check dimension compatibility with the down tube
  • Secure the battery using the mounting bracket
  • 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 17.5Ah Downtube Battery

What range does a 48V 17.5Ah battery offer?
Range depends on motor power, total weight and terrain type. For 500W systems, estimated range is roughly between 50 and 80 km per charge cycle, as referenced for the 500W conversion kit.
Is the battery compatible with any bicycle frame?
The downtube format fits most standard road, MTB, hybrid and commuter frames using the included mounting bracket. Check down tube clearance before ordering on very small or atypical frames.
How long does a full charge take?
The battery comes with a charger included and reaches a full charge in approximately 5–6 hours.
Can I use this battery with a 1000W kit?
Yes, it's compatible, though for the 1000W kit we recommend the 48V 22.5Ah Downtube battery for better sustained range and a higher current margin.

Details

SKU
35
Categories
Downtube Batteries
Weight
4 kg
Brand
All4ebikes
Dimensions
368×141×90mm
Capacity
17.5Ah
Voltage
48V

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Blidisel Vlad
01 Jul
Verified purchase
Sunt foarte mulțumit de această baterie de 48V 17.5Ah. Se potrivește perfect, oferă o autonomie foarte bună și funcționează perfect, raportul calitate-preț este excelent. Bateria se încarcă fără probleme și oferă o putere constantă pe toată durata utilizării.

De asemenea, vreau să evidențiez și profesionalismul echipei magazinului. Comunicarea a fost foarte bună, au răspuns rapid la întrebări și au oferit tot sprijinul necesar pe parcursul comenzii. Livrarea a fost promptă, iar produsul a ajuns bine ambalat. Recomand cu încredere atât bateria, cât și magazinul!