The RV5 is deliberately a one-box answer. Our listing describes it as a 5-in-1 power hub that replaces the converter, inverter, transfer switch, solar controller and DC-DC charger with a single unit, combining solar MPPT charging, alternator charging, a 5,000W 120V inverter/charger, battery charging and a 48V DC step-down module. That is why the install is within reach: you are not designing a balance of system, you are removing parts and terminating cable.
Plan these four things before you order
1. Where the battery lives. The B4810 is a 48V (51.2V nominal) 100Ah module, 5,120Wh, stackable, and it talks to the RV5 over closed-loop CAN so the hub manages state of charge directly rather than guessing. In a fifth wheel the usual home is the front storage compartment, close to the hub and on a surface that can carry the weight. Short, heavy cable runs are the whole point of going 48V.
2. Whether the Epanel goes in. The Epanel replaces the conventional RV breaker panel with smart, monitored circuits and is designed to drop straight into an RV5 build. Fitting it turns the job from "swap the power centre" into "rebuild the distribution", which is more work but leaves you with per-circuit control. Skipping it means keeping your existing panel and feeding it from the hub.
3. The alternator run. The RV5 does vehicle charging, which on a fifth wheel means pulling a feed from the truck through the pin box. Bluetti sells the alternator charger wiring pack for this, but our listing is explicit that Bluetti's page gives no cable gauge, length or fuse rating — so check the Bluetti installation manual for your run length before you order, and do not assume the pack covers a truck-to-trailer distance.
4. Solar. The RV5 has dual MPPT inputs. Our solar panel wiring pack listing also notes Bluetti publishes no cable lengths, gauges or connector types, so measure the run from your panels to the hub and confirm your panels use MC4 style connectors first.
Kit or parts?
The 5kWh RV Kit ships the RV5, one B4810, an Epanel, an Epad and two 200W panels as a pre-wired kit. Our kit listing states 5kVA continuous, a 10kW surge, charging from solar, alternator or shore, 0 to 80% from shore in 50 minutes, and scaling from 5 to 122kWh. If you want the whole system, the kit saves you reconciling part numbers. If you already have roof solar you like, buy the hub, battery and panel separately.
Where to stop and call someone
Landing 48V DC, sizing the fusing on the battery cable, and anything that touches the shore inlet or the breaker panel are the points where a mistake is expensive rather than annoying. Plenty of owners do all of it; nobody should do it from a forum thread. Send us your floor plan, your roof array and your truck, and we will check the parts list against the Bluetti manual before you buy.