Renogy Pro 12/24V 50A IP67 DC-DC Charger with MPPT
SVT Score, Upper
A 750 W, 12/24 V charger with MPPT solar input, built-in Bluetooth and an IP67 case, rated 50 A at 12 V.
$410
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Usability
6.6 out of 10Renogy rates it 750 W nominal output, the top rung for a DC-DC charger, so it scores 10 on capacity.
Renogy's manual gives nominal charging efficiency of at least 94 percent at 12 V and 92 percent at 24 V, so it scores 4 on efficiency.
It runs a smart-alternator mode, and Renogy's FAQ says its start and stop input voltages can be set through the app, so it scores 10 on operating range.
It takes up to 750 W of solar through MPPT and has Bluetooth built in and an IP67 rating, but Renogy publishes no galvanic isolation or parallel operation, so it scores 8 on features.
No certifier directory searched (Intertek, UL Product iQ, CSA, the CEC list, LabTest, TÜV SÜD, TÜV Rheinland and SGS) lists the RBC2150DS-21B, and Renogy's page claims only FCC and CE marks, so it scores 2 on verification.
Better on verificationRenogy DCC50S DC-DC ChargerIntertek's directory lists the RBC50D1S to UL 1741. $307.99Scores 8.0Renogy's product page backs it with a 5-year warranty, a model its current warranty document does not yet list, so it scores 6 on warranty and support.
Renogy sets warranty terms by model, for the original buyer only, and takes unused renogy.com orders back within 30 days, lithium batteries within 7.
Sealed, 750 W, Bluetooth built in
The RBC2150DS-21B is Renogy's Pro 12/24 V 50 A IP67 charger for RVs, vans and boats, combining alternator charging and an MPPT solar input in one sealed case.
It suits a buyer with a 12 V or 24 V rig, a wet or exposed mounting spot and up to 750 W of panels who wants phone monitoring without an add-on, and who will not need an isolated charger or more than 50 A at 12 V. $409.99 at renogy.com.
Strengths
- 750 W nominal output50 A at 12 V or 25 A at 24 V
- IP67 rating
- Bluetooth built inwith RV-C/CAN
- Solar input up to 50 V and 750 W through MPPT
- 5-year warranty on Renogy's product page
Drawbacks
- Nominal charging efficiency of at least 94 percent at 12 V, 92 percent at 24 V
- Renogy's current warranty document does not list this model
- No galvanic isolation or parallel operation published
- Idle draw under 50 mA in the manual against 20 mA on the product page
Specs
- CapacityNot applicable
- AC OutputNot applicable
- System Voltage12/24 V auto
- Panel PowerNot applicable
- Charge Current50-59 A
- Safety ListingNone verifiable
- Cell TypeNot applicable
- Low-Temp ChargingNot applicable
- Warranty5 Years
- MonitoringBluetooth built in
- Weight5.5 lb
At a glance
- 3 m temperature sensor
- 5 m IGN signal wire
- 246 x 154 x 57 mm case
- Works with Vision 7 display
Renogy is the brand of RNG International, Inc., of Ontario, California, which Dr. Yi Li founded in 2010.
It sells direct from renogy.com and its Amazon and eBay brand stores, and through Home Depot, Lowe's, Best Buy, Camping World and Walmart's marketplace.
The Renogy Pro 12V/24V 50A IP67 Dual Input DC-DC On-Board Battery Charger with MPPT (RBC2150DS-21B) charges a 12 V or 24 V house battery from a 12 V or 24 V starter battery or from solar panels, with a buck-boost stage that lets 12 V panels charge a 24 V bank and the reverse. Renogy rates it 750 W nominal output, 50 A at 12 V and 25 A at 24 V, with solar input of 15 to 50 V, up to 750 W and 48 A, and starter-battery input of 9 to 30 V. It charges from solar first and tops up from the alternator to reach full output, drawing 48 A from the alternator when the panels give 2 A. Smart-alternator start is recommended at 12.0 V held for 15 seconds and stop at 11.5 V (13.2 V and 12.7 V for a traditional alternator), and Renogy's FAQ says the input voltage values can be adjusted through the app. Renogy's manual gives nominal charging efficiency of at least 94 percent at 12 V and 92 percent at 24 V, 99 percent dynamic MPPT tracking, idle draw under 50 mA (the product page says 20 mA), an IP67 rating and operation from -13 to 158 °F. Bluetooth is built in for the Renogy app, the ONE Core or the Vision 7 display, with RV-C/CAN communication. It measures 9.69 x 6.06 x 2.24 in (246 x 154 x 57 mm) and weighs 5.51 lb. The box holds the charger, a quick guide, a 3 m battery temperature sensor, a 5 m IGN signal wire and four ST6.3 x 25 mm mounting screws. Renogy sells it at $409.99, with a launch offer adding a free 60 A ANL fuse set.
Questions answered from our data
Is Renogy good?We list 58 Renogy products and score 58 of them. Their overall scores run from 3.7 to 6.6, with a median of 5.4, against a median of 5.4 for all 58 products we score.
How much does a DC-DC charger cost?The 7 dc dc chargers we list run from $141 to $410, with a median of $206.
Are DC-DC chargers UL listed?Two of the 7 dc dc chargers we list carry a UL 458-type listing we could look up by model.- Which DC-DC chargers have Bluetooth?Five of the 7 dc dc chargers we list offer Bluetooth monitoring, built in or as the maker's add-on.
