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The Renogy RMS-DCDC is a flush-mount, backlit LCD monitoring screen for Renogy's DC-DC MPPT on-board battery chargers. It shows charging data for a two-battery system and lets you configure charging parameters through a four-key input, and it flags error codes. It suits owners of those chargers who want system readouts at the dash rather than in an app. Renogy itself notes this first edition falls short with lithium auxiliary batteries or smart alternators, where charging data is incomplete; the BT-2 module is the alternative for full monitoring.
In stockSold by RENOGYReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
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Lowest price we've seen: $42.21 on Nov 13 at Amazon. Tracked across 1 store since Nov 13.
Rated 4.6 out of 5 across 66 ratings, buyers generally find it a useful companion to Renogy's DC-DC charger. The main caveat, echoed by Renogy, is incomplete data in lithium or smart-alternator setups.
The Renogy RMS-DCDC is a monitoring screen for Renogy DC-DC MPPT series onboard battery chargers. It is a high-precision meter that gives operator feedback on a 2-battery system and shows important system information.
It can be flush-mounted for a clean, professional look once installed, and it has a backlit LCD. A 4-key input lets you move through the screen to view system information, configure charging parameters and identify error codes.
The first edition of this monitoring screen is not suited to setups where the auxiliary battery is lithium or the vehicle has a smart alternator. In those setups, the full charging data of the charger cannot be checked.
