A fuse?

[Serum]

It is about electronics, and my schulze 18.97 died because of loose connections with the batteries.. It died after i braked.

If you want to keep you batteries intact and don't worry about the controller, use the fuse..

and it is logicall that the motor works as a generator, it simple uses the low, near zero Ohms of the batteries for braking. the fuse will end in an endless resistance, so the energy can no longer be stored.

Those spike killing diodes might work well though. you can put them over the 3 wires of the motor.. or on the 2 batterie wires. they simple short when they get above a certain voltage. and they can absorb 1500 watt spikes and you can use them paralell. I will get back on the name of those things