Design Gallery
Real boat, RV, van, and off-grid power system designs shared by the PowerLab community. See load budgets, battery banks, and solar arrays that people are actually running today.
30ft Sailboat — Weekend Cruiser
Basic coastal cruising setup with essential navigation, lighting, and comfort appliances.
Daily
1,735 Wh
Battery
400 Ah
Solar
600 W
View full design →
Beneteau Oceanis 40 — 24V Bluewater Cruiser
Trans-Atlantic-ready 40-footer running a 24V house bank with 600Ah LiFePO4. Staged in Lagos, Portugal preparing for an Atlantic crossing. Heavy watermaker + Starlink + AIS + autopilot 24/7.
Daily
6,811 Wh
Battery
1600 Ah
Solar
2000 W
View full design →
Westsail 32 — Full-Time Liveaboard on AGM
Classic Westsail 32 kept on a mooring in Sausalito Bay. Three 100Ah AGMs feeding minimal liveaboard loads year-round. Deliberately simple — no watermaker, propane cooking, minimal electronics. 3 days autonomy sized for Bay Area fog stretches.
Daily
2,266 Wh
Battery
1200 Ah
Solar
800 W
View full design →
Hunter 37 — Chesapeake Bay Weekend Cruiser
Weekend cruiser out of Annapolis. 200Ah LiFePO4 bank replacing the original flooded bank. Anchors out 2 nights most weekends, club dock midweek. 300W rooftop solar + alternator handles weekend turnaround.
Daily
1,634 Wh
Battery
400 Ah
Solar
600 W
View full design →
Grady-White 282 — Offshore Fishing Setup
28-foot center console with dual 100Ah AGM house bank. Day trips only — runs a genset for A/C at the dock. Heavy pull from radar + chartplotter + bait aerator when trolling all day.
Daily
1,194 Wh
Battery
200 Ah
Solar
400 W
View full design →
Sea Ray 340 Express — Lake Tahoe 24V Upgrade
Express cruiser retrofit with 400Ah 24V LiFePO4 for silent overnights on the lake. Marine A/C stays on the genset, but all house loads run off the bank. Ice maker, residential fridge, Starlink TV evening at anchor.
Daily
4,561 Wh
Battery
500 Ah
Solar
1200 W
View full design →
Sprinter 170 — Full-Time Moab Van Build
Mercedes Sprinter 170 high-roof with 400Ah LiFePO4 under the bench seat. Full-time digital nomad setup — Starlink runs most of the day, induction for cooking, 12V compressor fridge, diesel heater for shoulder seasons.
Daily
4,749 Wh
Battery
1000 Ah
Solar
1200 W
View full design →
Catalina 36 Weekend Cruiser — Lithium Conversion
36-foot sailboat retrofit from flooded lead-acid to 400Ah LiFePO4. Coastal cruising out of San Diego, weekend passages with 2-3 nights at anchor. Goal: eliminate the nightly engine run to recharge AGMs while keeping the chartplotter, reefer, and anchor light up until morning.
Daily
1,747 Wh
Battery
400 Ah
Solar
600 W
View full design →
Tiffin Allegro Class A — Lithium Boondocking Setup
36-foot Class A motorhome with 600Ah LiFePO4 replacing the original 4×6V flooded bank. Rooftop 800W solar handles most days — can run the residential fridge, coffee, and microwave without the genset on sunny boondocks.
Daily
5,010 Wh
Battery
1200 Ah
Solar
1200 W
View full design →
Coachmen Freelander Class C — Dual AGM Weekender
29-foot Class C motorhome with the stock dual-AGM house bank (220Ah). Short trips with minimal boondocking — 2 days autonomy is the sweet spot between hookups or a genset run.
Daily
1,673 Wh
Battery
600 Ah
Solar
600 W
View full design →
Remote Ontario Cabin — 24V Solar + 5 Days Autonomy
Off-grid three-season cabin north of Parry Sound, Ontario. 24V/800Ah LiFePO4 + 2.4kW solar handles everything except December/January (propane generator fills the gap). 5 days autonomy accounts for cloudy November stretches.
Daily
8,722 Wh
Battery
2300 Ah
Solar
3200 W
View full design →
Idaho Hunting Cabin — Minimal 12V / 7 Day Autonomy
Weekend-use hunting cabin in the Sawtooths. 300Ah AGM bank, 600W solar, runs on absolute-minimum loads for a week without charging. No fridge — cooler with block ice when occupied.
Daily
1,101 Wh
Battery
1600 Ah
Solar
400 W
View full design →
Vermont Homestead — 48V Off-Grid with Well Pump
10-acre homestead running fully off-grid on a 48V/1200Ah LiFePO4 bank + 6kW PV array. Primary residence — well pump, washing machine, all LED lighting, induction cooking when solar allows. Generator backup for stretches over 3 cloudy days.
Daily
11,129 Wh
Battery
1000 Ah
Solar
4000 W
View full design →
Ram Promaster 136 — Weekend Adventure Rig
DIY Promaster 136 for weekend ski trips + summer mountain biking. 200Ah LiFePO4, modest loads, no A/C. Three days autonomy between recharges from the driving alternator + 200W rooftop solar.
Daily
1,729 Wh
Battery
600 Ah
Solar
600 W
View full design →
Share your own design
Design a power system in PowerLab. Toggle “public” on a project to have it appear in this gallery — good for getting feedback from other builders.
Start a free design