REVIEW: QR-E 250W ELECTRIC BOOSTER BICYCLE MOTOR AND B60i AND B70 BATTERY

[3dxl]

I think Blueberry posted about having opened up a Qiroll battery, you might send him a message about details if he doesn't respond to this thread. I suspect that the plastic cap may be glued onto the aluminum tube which may have to be destroyed in order to open it up. Keep us posted.
On another front I've found that my old used Pro works surprisingly well with the 24v battery from my mute model. I have several Ryobi 18v 4ah power tool batteries that I want to wire 2 in series and see how that works for the Pro.

Thanks for the info, i'll try to contact/pm Blueberry later. Btw how do you connect to alternative battery to Qiroll unit that have 3 terminal plug ends? Does Bafang/Hailong battery pack 48V works on Qiroll?

 

[EMGX]

You only have to use two (+ & -) of the three terminals when using a standard non-proprietary battery. The third terminal isn't required. I think blueberry first posted this information also. I've run my Mute version with both 48v and 36v batteries and a buck converter that can drop voltage up to 60v down to 24v. BTW I've also used a 5v buck converter so the Qiroll or other batteries can be used as a battery bank to charge devices such as phone.