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52V 19Ah Downtube eBike Battery

£439.00 inc VAT

SKU: B52192 Categories: , Product ID: 4334


These batteries are built using Samsung cells. They offer a sturdy mounting base and fit to the screw holes used to attach your bottle.

They fit most standard frames, but please check the sizing before you order.

They are suitable for up to 1500W motors.

Please note that the battery comes with an XT90 plug. We also supply a spare XT90 connector with bare wires in case you need to adapt your motor.


They use a Hailong Max case – 89mm x 129mm x 367mm

Weight: 5.5KG

Packaging Content

  • Battery pack and backing plate
  • 2A Charger

Capacity Testing

Please see the tab ‘Battery Capacity and Testing’ (above) to find out the actual measured capacity of this battery.

Important Advice

  • Do not short (join) the positive and negative wires of the battery
  • Do not reverse the polarity when attaching to the motor
  • Do not expose the battery to very high temperatures
  • Do not submerge the battery
  • Do not disassemble the battery
  • Do not use any charger unless it has been designed to charge this type of battery
  • Please consider the environment when disposing of this battery


1 year warranty based on purchase date. Please return to us for repair or replacement.


Additional information

Weight 6.4 kg
Dimensions 50 × 23 × 16 cm
Continuous discharge current


Max charging current


Charging temperature


Usage temperature range

-20~55 °C


Battery Type

Battery Capacity and Testing

We test a sample of all of our batteries to ensure that they have the capacity we advertise, and to ensure that they will meet the demands of an ebike.  We’re probably one of the few UK based battery suppliers that actually publish discharge graphs of our batteries. The following graph shows this battery (52V 19.2Ah) discharge tested to 20% capacity. Fully discharging a battery can damage it so we always leave 20% of charge (your motor normally does this for you).

The measured capacity is 17.73Ah when discharged by 80%. This means when the battery is fully discharged by 100%, the capacity is 22.16Ah – so it is actually larger than we advertise!

Follow this link to find out more about how big your battery needs to be



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