Just finished wiring up a fairly simple setup in my Transit — 200Ah lithium leisure battery, 40A Victron Orion-Tr Smart DC-DC charger pulling from the alternator. The charger works brilliantly, no complaints there, but I'm starting to wonder if I massively over-specced it for what I actually use the van for. Weekend trips, a bit of laptop charging, some lights. That's about it.
The Orion cost me just over £200 and honestly, a 20A unit would probably have kept up with my actual consumption no bother. I've seen some of the Sterling and Renogy options sitting around the £60–£80 mark for 20–30A and they seem to do the job for a lot of people. No Bluetooth app, sure, but do I actually need to watch a charging curve on my phone at 7am in a layby in Wales?
Curious whether anyone's gone down the cheaper route and regretted it — or gone full Victron and felt the same mild buyer's remorse I'm sitting with. Also wondering if the MPPT integration and the engine-detect feature on the Victron actually justifies the price gap in day-to-day use, or if it's just nice-to-have fluff for most builds.