AEG AG901 Ergorapido replacing the battery pack

crwdns2936071:01crwdne2936071:0 — Opening the Housing

Remove all 5 screws on the back side of the housing

crwdns2936071:02crwdne2936071:0 — Open the Handle

The handle is hooked with 2 plastic lugs on each side. you have to unhook it with a slotted screwdriver or something similar. Then carefully pull off the cover. and clean everything inside first.

crwdns2936071:03crwdne2936071:0 — Solder in the battery cells

Unscrew the circuit board, the ones in the handle are simply preconfigured (4 cells). Took the wiring from the old cells and soldered them to the soldering fans of the new cells & insulated them with heat shrink tubing. You must pull the shrink tubing over the cable beforehand!

crwdns2936071:04crwdne2936071:0 — Solder in the motor battery cells

Separate pack of 6 cells into pack of 2 with cutter & separate soldering tab with side cutters. Cover the cut housing insulation with insulating tape. Solder cells, note polarity! Test and then reassemble. Pay attention to the cable routing, it is very tight to the touch. I wish you success!!!