Thunderstruck (not-just-)72V Converter

Well finally it arrived. The Thunderstruck Motors 72V*-12V converter I needed to replace the factory Ego Scooter’s 48V one has finally completed its hazardous USPS journey from sunny California. Here it is:

It comes complete with a male three way red/yellow/black mini-connector of exactly the same type as that of the converter it replaces, and can even comfortably fit at the same mounting point. It comes with a little sticker on the back with helpful labelling of each wire, and there’s even a female three way mini-connector included in case your existing wiring doesn’t follow this common arrangement.

Best of all: According to the blurb on their site, the input voltage is actually 36-72V, so it will also work fine on a regular 48V (or 60V, of course) Ego Scooter – so a perfect first step in the upgrade path! 🙂

For now, though, it sits under my seat next to the extra batteries, until such a time that I get round to taking the bike apart, yet again, to re-route the bikes converter cable back to its original location. I’ll also remove the temporary feed wire from battery 1, which I was using as a temporary power source for the 12V electronics. It’s so nice not to have to plug in, and then disconnect this cable every time I need to use the bike.

Suffice to say, it does what it says on the box, providing 12V at a maximum of 10A from a 72V input. I plugged it in, and took it for a good long spin, and it seems to work absolutely fine. At $50 US inc p&p – that’s about £33 in English money – I can therefore definitely recommend it as an alternative to the home-made PSU converter that was eventually to cost me just as much, and leave me with the weird polarity problem on my 12V system.

The downside is that the item has a long way to come, in the course of which it may vanish entirely into the twilight zone of the US postal system that was to claim the first one that the Thunderstruck people sent me. Fortunately, though, the second one made it here safe and sound, but not without getting knobbled by customs and hit with a seemingly arbitrary £11 charge, which I had to pay before I could pick it up. But then, that seems to be the nature of international shipping and customs fees, a strange game of Russian Roulette where parcels are hit with fees apparently at random, or due to a technicality of customs labelling that I have yet to fully understand. You win some, you lose some…

*That’s 36-72V input, actually, so fine for regular 48V Scootas too!

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