Mod by Smallexis from trottinetteselectriques.heberg-forum.fr
The Airwheels Q3 and its clones has big housing and a lot of internal space for a big battery pack. To double the capacity of the anemic original pack from 130Wh to 260Wh, Alexis has soldered individual cells recovered from an spare pack in parallel with existing cells, one by one. He has also shunted the BMS, of course.
The original 16S1P pack has been modded into a 16S2P, a setup commonly found in many wheels with 260Wh or more, like Firewheel, Gotway, TG…
It is possible to buy individual cells with tab from a battery vendor for this mod. I just slightly raise my nose to the solder blobs too near to the cell’s poles. Better have them at the tip of the tabs to avoid heating the cell.
All in all, a very neat and usefull mod, doubling riding range and giving a « secured » BMS without power cut, what not to like !
Paralleling each cell on one side
And on the other side
Wrapping the whole pack in heavy tape
A complete charge monitored by Charge Doctor : 4.0Ah and 229 Wh