1. Turn the control-box upside down so you are facing the REAC label. Unscrew the four fastening
screws . Be sure to collect all four screws that should now be loose.
2. Turn the control-box around. Remove top cap . Make sure that the separating plate stays on
the lower cap . Be careful not to damage the rubber sealing on the separating plate.
3. Detach the battery plugs. Start with the outmost black cable and then the inner red. Be careful not
to damage the locking mechanism in the plugs (use a needle to unhook the lock see figure 1).
4. Inspect the rubber sealing for damage. If its damaged the separating plate must be replaced.
5. Replace the battery pack , same placement as the old battery. Make sure the plus pole is
nearest the separating plate.
6. Reattach the battery plugs. Start with the red that should be connected to plus pole on the battery
nearest the separating plate. The plus pole should be nearest the separating plate.
7. Finally attach the black battery plug. This should be connected to minus pole on the outmost
battery.
8. Make sure the battery is centered on the separating plate . Make sure cables are folded as near
as possible to the batteries.
9. Mount the top cap back on its place. Be careful not to damage the rubber seal or to squeeze
any cables between the top cap and the separating plate . The top cap should insert with little
force and stay attached even without force (nothing pushing the parts apart).
10. Turn the control-box around and re-screw the fastening screws .
Figure 1. Unhooking the lock on black cable (minus) using a needle
