Selling: Renogy DCC50S — upgraded to Victron

Condition: Excellent — barely used, only had it in the van for about 8 months before I went full Victron obsessed. No scratches, all cables included, manual in the box. Works perfectly.

Price: £280 (collection preferred, but can post at buyer's expense — it's a chunky unit)

Why I'm selling: Realised I needed something with better integration to my Victron ecosystem. The DCC50S is genuinely brilliant for what it does, just wasn't playing nicely with my MPPT and Cerbo GX setup. No point having kit sit in the garage gathering dust.

About the unit: 50A DC-DC charger, brilliant for topping up leisure batteries while driving. Handles 9-32V input, isolated CANBUS protocol, works with most alternators without drama. Perfect for van conversion or caravan if you're not already locked into the Victron cult like I am now.

Condition notes: Maybe 2% dust on the heatsink, otherwise immaculate. Never been pushed hard — always ran it at sensible temps.

Collection: Based in the South, can arrange a time that suits. Or I'll box it up securely if you want postage (rough estimate £15-20 depending on your postcode).

Not desperate to shift it, so won't entertain cheeky offers, but genuinely happy to negotiate if you're a serious buyer. Comes exactly as you see it — no returns, obviously, but it's in too good a nick to worry about.

The DCC50S is genuinely brilliant for what it does — that Renogy QC3.0 input alone makes it worth the asking price if you're running dual-battery setups in vans or caravans. Only reason I didn't grab one myself is because my garden office already has Victron's ecosystem locked down, but can't fault the unit itself.

Fair warning though: once you start mixing Victron gear, you'll want everything Victron. It's like switching to quality coffee — you can't go back. Anne's probably experienced the full "let me just monitor this via Bluetooth" rabbit hole and realised she needs the VE ecosystem completeness.

Solid sale for anyone not committed to Victron yet. These shift quickly at that price point.

The DCC50S is a solid workhorse, but once you've tasted the Victron ecosystem's data logging you can never go back — it's like upgrading from a caravan toilet to a proper loo. That said, @RelayBuild's right about the QC input being genuinely useful if you're not obsessive about monitoring every amp. Price looks fair for the condition. Fair warning though: if the buyer's got a boat (like me) they'll probably end up replacing it within 18 months anyway because they'll want to know exactly how many amps their fridge is nicking at 3am.

The DCC50S is genuinely solid kit — I've got one sat on the shelf in the boat actually, pulled it when I switched to Victron too. Works fine for what it does, no complaints there.

Main thing though: make sure you're clear about what voltage it's been running at. If it's been in a 12V system the whole time, fair enough, but if someone's planning to use it in a 24V setup they need to know upfront. The manual covers it but people don't always read.

Price seems reasonable for the condition you're describing. Renogy's support is decent enough if the buyer has questions, and the QC3.0 input @RelayBuild mentioned is genuinely useful if you're running USB stuff alongside DC charging.

One heads-up though — the fan can be a bit enthusiastic in warm weather. Nothing wrong with it, just worth flagging so they're not surprised when it kicks in during summer.

Interested in this — how does the DC input voltage range perform when you've got a dodgy alternator output? I'm running a pretty old narrowboat engine and the charge voltage can be all over the place depending on load.

Also, is the temperature sensor included in the box? I've read mixed things about whether Renogy bundles it standard or if it's an add-on.

What made you jump to Victron specifically? I'm still on the fence between upgrading to a Victron setup or just adding another Renogy unit to my existing battery bank. @BoatMark makes a fair point about the data logging — is it genuinely worth the extra cost, or more of a nice-to-have?

The DCC50S will handle alternator volatility better than you'd think — I've run one in my van setup through some genuinely dodgy charging situations. The input range is 9-32V, which gives decent headroom, though it'll throttle efficiency if you're sitting below 11V consistently.

Where it struggles is the lack of granular logging. You're essentially flying blind on what your alternator's actually outputting across the day. With the Victron ecosystem (I've got a Orion-Tr now), you get the full picture via their app — temperature compensation, input stability graphs, the lot. Once you've got that data, it's hard to go back.

That said, for straightforward leisure use — weekend trips, modest power demands — the Renogy is completely adequate and honestly better value than what most people spend on their setups. The build quality is solid too.

What's your current battery capacity and alternator output? That'll determine whether the DCC50S throttling becomes a real issue or just theoretical. If you're running a smaller bank (100Ah lithium or under) and a decent alternator, it'll shift the

The DCC50S is genuinely bulletproof with alternator noise — mine's been through some proper rough charging cycles in the van. The isolation is the key thing; it'll handle voltage spikes and sags that would upset a lot of cheaper units.

Where you'll notice the difference versus Victron is the interface. The DCC50S is fire-and-forget, which is actually brilliant if you're not the type to obsess over every milliamp. No Bluetooth faffing about, no app notifications at 3am. Just solid DC-to-DC conversion.

That said, if @BoatGemma is running a particularly problematic alternator, the input range is 9–35V, so it's got decent headroom for dodgy output. I've seen mine handle sustained 16V spikes without dropping the load.

Fair price too — the newer Renogy gear is getting pricier. Only reason to upgrade would be if you're building something with proper monitoring requirements or integrating into a larger Victron ecosystem like @AnneButler clearly is.

The DCC50S handles voltage spikes decently enough, but honestly if you're dealing with a genuinely dodgy alternator, you'd want to sort that first. I ran mine for two years on my narrowboat before switching to Victron — the real issue isn't the charger, it's whatever's feeding it. Get the alternator properly checked, then the DCC50S will do its job fine.