Battery Guru BG561 battery (36V) - 15,6 Ah

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Price: €358.14 358.14
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BatteryGuru BG561 battery compatible with Rapid S500 kit. The use of capacious cells allows you to overcome large distances while maintaining the same size and weight as in similar batteries.

The battery in the case is mounted on the rail mounted on the frame of the bicycle. Has a XLR charging socket. The battery has a built-in key lock, which allows the owner to easily disconnect the battery from the bike and at the same time makes it difficult for others to remove it.




Gold-plated contacts

Batteries have high quality contacts, which thanks to additional gold-plating are more resistant to corrosion or weather conditions. In addition, they provide a much better current conduction.


Waterproof housing

Use your electric bike even during bad weather - the bidon battery is placed in a durable and water-resistant housing sealed with silicone.


2-year warranty

All the batteries available in our store are covered by a 2-year warranty that will be implemented throughout the European Union.


Tested before shipment

Before the battery reaches the customer, we test its capacity, maximum load and discharging profile. On request, we also provide a detailed report from the tests and a thermovision photo.



In addition to the warranty, each battery also has liability insurance, which covers all costs resulting from malfunction.


Key lock

Batteries in the cases have a key lock, so you can be sure that no unauthorized person will take it out of the rail on the bicycle frame.


Easy assembly

The bidon battery can be easily mounted to the bike frame in a few seconds - just insert it into the appropriate rail previously placed in the frame. You can quickly pull it out and recharge it at home!


Battery produced in Europe

By buying our batteries you can be sure that they come from European production, which distinguishes them from other products available on the market.



Switch and USB port

Thanks to the on/off switch you can quickly cut off the power supply of the kit, and the USB port in the housing allows you to charge the phone or other devices


Before purchase, check whether the battery will fit the frame of your bike:

Download the battery template.



With a BG561 battery you will get:

  • a battery
  • bike frame rail
  • 2 keys
  • 2A BG Silent Charger
  • a 25 cm length cable (approx.) to connect the rail to the controller
  • adapter for mounting the battery in the bidon bottle holes
  • 24 months manufacturer's warranty
  • basic information about good practices of battery use and storage



Prawidłowy montaż baterii bidonowej

Correct battery mount

To mount the battery to the frame, use the existing bidon bottle holes - use the adapter for the battery rail, which is included in the package.

Prawidłowy montaż baterii bidonowej

Incorrect battery mount

Mounting the battery under the frame could damage it while driving!


How to use the battery:

The rail is mounted in the bidon bottle holes or you can make additional riveted holes (you can also attach metal plates to the rails and use metal clamps).

The battery can be pulled out of the rail using a key and taken with you home for charging.

You can check the charge level on the display (from the Rapid kit) or by pressing the button on the front of the battery - there are 4 LED lights.

With the red switch you turn the battery on or off


Each battery is individually tested. In addition, we are also checking the:

  • capacity
  • maximum load capacity
  • discharge profile

(On request, along with the battery, we send an individual capacitance test report.)



Watch out for batteries manufactured from used cells! You will not get a guarantee for more than 1 year for such batteries.

BG561 batteries are made in a popular housing model, but the content inside counts. Not every similar looking battery will work just the same.



Before buying, check whether the battery will fit the frame of your bike - download and print our templates:


Technical data

Nominal capacity 15,6 Ah
Nominal voltage 36V
Maximum voltage 42V
Configuration 10S6P
Cell type BatteryGuru INR18650-26F
Recommended load 40A
Amount of stored energy ~560 Wh
Number of cells 60 pcs
Dimensions 365x110x90 mm
Weight 3,7 kg
Maximum charging current 5A
Additional info suitable for Rapid S500 kit

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