we've been hooking ours up to inexpensive NiMH batteries on older bikes with no battery
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Small ding in the headlight ears
No big deal but its not a simple bolt-n-go kit
This handy little thing is feature rich
HPI Mini Rotor CDI for Puch, Tomos, Sachs, and Derbi pa501 we've been hooking ours upHPI mini rotor CDI for so many bikes. These are designed for Puch E50 and ZA50 engines but can fit Tomos, Sachs, Derbi, and more with minimal or no modifications. Unlike the internal rotor HPI, this setup comes with a built in 60w lighting coil. A good lighting coil, ignition curve, and you can adjust the stator without pulling the flywheel. Its a pretty great setup. We recommend using a resistor boot or resistor plug as well as a voltage regulator