Renogy DCC50S 12V 50A DC-DC On-Board Battery Charger with MPPT

SKU DCC50S

Renogy

Renogy's product page

Last updated: 16 September 2026

Battery and charging

Battery profiles it carries: Five profiles, including lithium and a user-defined one
Boost voltage, per chemistry: AGM 14.6, Gel 14.2, Flooded 14.6, Lithium 14.4 V
Float stage on lithium: No float stage at all on the lithium profile
Boost timer on lithium: The two-hour boost timer does not apply to lithium
Which batteries it will equalize: Equalization is for vented and flooded lead acid only
Temperature compensation: None on lithium; -3mV/°C/2V on everything else

Battery care and safety

Overvoltage shutdown, per chemistry: 16.0 V on every chemistry except lithium, which is 16.4 V
Temperature sensor and lithium: Do not fit the temperature sensor to a LiFePO4 pack with a BMS

Compatibility

Battery voltage window: 9–16 VDC — a 12-volt system only
Alternator input it accepts: 13.2–16 V from a traditional alternator, 12–16 V from a Euro 6 smart one

Conditions and exclusions

If the wrong profile is selected: Choosing the wrong profile voids the warranty

Compatible batteries

These batteries are here because the published figures line up, not because anyone has said they go together — that is our reading of two documents that never mention each other, not a claim by either maker and not a test by us. Even where every figure agrees, these are not established:

Which charge profile the charger is actually set to — several publish four or more, and only one of them is this pack’s chemistry
What it holds the pack at once bulk charging ends, which is a different figure from the one it boosts to, and which some profiles do not apply at all
The charge current the pack will accept, against what the charger delivers into it
Whether the charger can restart a pack its own BMS has already disconnected
The wiring in between — where a converter feeds a distribution panel, the pack is one load on a circuit rather than a device on the end of a lead

Worth confirming with the charger's manufacturer or a dealer before buying.

Source: renogy.com/cdn/shop/files/RBC30D1S-G3_G4_RBC50D1S-G6_DC-DC_with_MPPT_EN__UM_B5.pdf

Renogy 12V 200Ah Deep Cycle AGMFigures comparedView battery: Renogy 12V 200Ah Deep Cycle AGM →
THE PACK'S OWN MAKER NAMES THE KIND OF CHARGER AND THIS IS ONE. Renogy say of this battery: “Only a charger made for AGM or sealed lead-acid”, and the DCC50S carries an AGM/SLD profile. The figures agree as well as the category does. On that profile the charger boosts to 14.6 V and floats at 13.8 V; the pack asks for 14.4 V to 14.8 V in cycle use and floats at 13.6 V to 13.8 V. Both charger figures sit inside both of the pack's windows. Set the charger to AGM/SLD: on the Gel profile it would boost to 14.2 V, below what this pack asks for.
Renogy 12V 100Ah Trolling MotorFigures comparedView battery: Renogy 12V 100Ah Trolling Motor →
TWO TENTHS OF A VOLT SHORT, AND BOTH FIGURES ARE RENOGY'S. This pack's datasheet gives a charge voltage of 14.6 V. The DCC50S's Li (LFP) profile boosts to 14.4 V. The pack charges — 14.4 V is well inside its 10.8 V to 14.6 V window and it is the right chemistry profile — but it is not held at the figure its own maker prints for it, and the two products come from the same company. Neither number is preferred here and neither is adjusted. The charger's user-defined profile can be set anywhere from 9.0 V to 17.0 V, which is the route to 14.6 V if a reader wants it; Renogy warn that an incorrect parameter setting voids the warranty. The lithium profile also applies no float stage and no boost timer, so the pack is not held at any voltage once charging ends.
Renogy 12V 20Ah Deep CycleFigures comparedView battery: Renogy 12V 20Ah Deep Cycle →
THE GAP RUNS THE OTHER WAY ON THIS ONE. The pack asks for 14.2 V and the charger's Li (LFP) profile boosts to 14.4 V — two tenths above rather than below — and the pack's own stated range runs to 14.8 V, so the charger's figure is inside it. As on every lithium pairing here the charger applies no float stage, so the higher boost figure is not held indefinitely. Worth reading beside the 100Ah trolling-motor pack on the same charger, where the same 14.4 V sits BELOW that pack's stated 14.6 V: one charger setting, two Renogy packs, and it misses both in opposite directions.

Sources

Renogy DCC50S — User Manual, section 6.2 Battery Charging ParametersManufacturer document
Renogy
Source: renogy.com/cdn/shop/files/RBC30D1S-G3_G4_RBC50D1S-G6_DC-DC_with_MPPT_EN__UM_B5.pdf
Retrieved September 14, 2026
12V 30A/50A DC-DC On-Board Charger with MPPT | Renogy USArchived document
Source: renogy.com/products/dcc50s-12v-50a-dc-dc-on-board-battery-charger-with-mppt
Retrieved September 15, 2026