Inverter sizing, wiring, batteries and 12V systems for RVs and vans.
A 3000W inverter on a 12V battery is about as large as 12V systems practically get. Renogy’s manual for its 3000W 12V Pure Sine Wave Inverter (RNG-INVT-3000-12V-P2) lists a maximum continuous battery current of 250A, a 6,000W one-second surge rating and a recommended 400A battery fuse, and Renogy’s product page recommends 4/0 AWG battery cables. […]
Renogy’s 2000W 12V Pure Sine Wave Inverter Charger with LCD (model R-INVT-PCL1-20111S, from Renogy’s PCL series) combines a 2,000W inverter rated for 6,000W surge, a charger adjustable from 5A to 65A and a 16A automatic transfer switch with about a 10ms transfer time, according to Renogy’s product page and PCL series user manual. It’s a […]
Renogy’s ONE Core is a 4-inch touchscreen panel that mounts flush in an RV, van or cabin wall and pulls together energy monitoring, an RV leveling sensor and smart-home automation in one device. According to Renogy’s U.S. product page, the current G3 version connects over Bluetooth LE and Mesh, Wi-Fi on both 2.4GHz and 5GHz, […]
Renogy’s Battery Shunt 300 is a Bluetooth battery monitor that tells you what a voltmeter can’t: how much charge is actually left in your battery and how long it will last at the current load. Renogy’s user manual (version A2, November 2024) rates it for 8–120V systems, 300A continuous and 500A for under 10 seconds, […]
Renogy’s current Rover Li 40A MPPT controller (model RNG-CTRL-RVR40) is rated for up to 520W of solar on a 12V battery and 1,040W on a 24V battery, with a 100V maximum panel open-circuit voltage, according to Renogy’s 2024 Rover Li 20/30/40A user manual. Renogy’s own store listed the 40A controller at $205.99 on its own, […]
Installing a Renogy DCC50S comes down to four cables, two fuses and one decision: whether your vehicle has a smart alternator. Renogy’s installation manual for the 50A DC-DC charger with MPPT says to connect the ground first, then the house battery, then the starter battery, then solar, and to run the included IGN signal wire […]
A truck bed camper or a canopy-covered bed doesn’t need a big power system to run a 12V fridge, lights and phone charging for a long weekend. A single 100Ah lithium battery, one or two 100W flexible panels, and a charger that also uses the truck’s alternator will cover most trips. LiTime’s 12V 40A DC-DC […]
A truck camper roof usually has room for two to three 200W panels, and that’s enough to keep a 12V fridge, lights, a fan and phones charged indefinitely in good sun. The panels I use for these examples are BougeRV’s Arch Pro 200W flexible panels. BougeRV rates each one at 31.1V Vmp and 36.4V Voc, […]
Switching an RV to lithium (LiFePO4) batteries often goes hand in hand with a new inverter charger, because the unit that charges the batteries from shore power also has to match lithium’s voltage needs. Two widely installed 12V, 3kW-class options show what to look for. Victron’s datasheet for the MultiPlus-II 2x120V 12/3000 lists 2,400W continuous […]
Swapping an RV’s lead-acid house batteries for LiFePO4 is one of the most popular upgrades among RV owners, and the batteries themselves are only part of the job: the converter, alternator charging, solar controller and battery monitor all need to match lithium’s charging profile. A typical 12V 100Ah LiFePO4 battery, such as LiTime’s Group 31 […]
