We’d just purchased a heap of Renogy gear for our Hybrid Camper, and looking online saw that the Renogy 50 amp DCDC charger was well priced, had a lithium battery profile and decent reviews, so I put an order through along with another Renogy Inverter, and a 500A shunt and battery monitor.
We’ve had the Renogy DCDC charger in our Dmax for a couple of months now, and have been living out of our Hybrid Camper and 4WD on a lap of Australia, so its been well used.
How much is the Renogy DCDC Charger?
You can pick the 50 amp Renogy DCDC for $299 , direct from their website. This is the Renogy DCC50S, with MPPT solar input too.
How does it perform?
These units go pretty well, when wired up correctly, with the right gauge wires. If you don’t know what a DCDC charger actually does, and whether you need one, we have a post that covers this in depth here; What is a DCDC charger, and do you need one?
Ours is set to charge at a maximum of 50 amps, but we rarely see this, and I’ll go into why further below.
What do we like about the Renogy DCDC?
You can’t complain about the price of this DCDC. They are decent quality gear, and priced very competitively.
It back charges the cranking battery
One of my favourite features of the Renogy DCDC is that it will use the solar to charge your secondary (house) battery, and when this is full, it will trickle charge your cranking battery.
For someone who can leave their vehicle undriven for weeks at a time, this is pretty handy as I know that the starter battery will always be happy providing we get some sun. If you have a modern 4WD with a heap of electrical gadgets that operate when you open and close doors, this can be a really important feature.
The Bluetooth module is great
We opted to buy a Bluetooth dongle with the Renogy DCDC, which allows us to connect up using the DC Home app, and monitor what is going on. It tells me the starter battery volts, house battery volts, alternator charge, solar charge, DCDC temperature and a few other random bits and pieces, which is great.
You can also adjust settings on it from the app, which means you don’t need perfect access to the DCDC itself, to make changes.
What do I not like about the Renogy DCDC?
A lot of DCDC chargers give preference to solar input over alternator input, and the Renogy is similar in this manner. However, you should know that the 50 amp charging capacity is split between the solar and alternator. In other words, it takes a maximum of 25 amps from your alternator, and a maximum of 25 amps from your solar to make up the difference.
If you want the full 50 amps from your alternator, you need to disconnect the solar panel input, which is doable, but annoying.
For us, we leave the solar input plugged in, as it’s a 200W solar panel and in good sunlight we are getting 10 – 13 amps anyway, so a total of 25 + 10 – 13 is somewhere around the 35 – 38 amps of input to our lithium battery
I have on occasion unplugged the solar to get the full alternator input, but it requires your starter battery to be at 13.2V in order to pump this charge through, and ours often sits around this, or just below, which is limiting the charge. EDIT – I found a loose connection, which has resulted in us getting up to 34 amps from the alternator, and I assume this is its limitation as the cable sizing is great.
Overall, we’re fairly happy with this DCDC. It does what we want it to, without any real fuss and the Bluetooth connection to DC home (the Renogy app) makes monitoring the whole lot quite easy.