DC Cooler Kit — Quick Start
Power-Up
- Flip Breaker ON.
- Enable Buck 24→12V.
- Verify output 12.2–12.6 V (under load).
- Plug cooler into SB50 (correct polarity).
- Set cooler: Normal to pull-down → Eco.
Shut-Down
- Cooler OFF & unplug.
- Buck OFF → Breaker OFF.
Limits & Sizing
- Branch fuse: 10–15 A
- Fridge peak: 6–10 A @ 12 V
- Outlet wire: 12 AWG (min.)
- No cig sockets >10 A
- Keep runs short; strain relief on all pass-throughs.
Battery: 24 V LiFePO₄
Buck: 20–30 A
Fast Runtime Hints
- Running: 35–60 W; Duty: 25–45%
- 2.56 kWh pack @ 90% DoD & 94% eff ≈ ~2.16 kWh usable
- 50 W × 35% → ~17.5 W avg → ~124 h
- 60 W × 45% → ~27 W avg → ~80 h
Pre-chill contents + use thermal cover to cut duty cycle.
Solar (Optional)
- Battery → MPPT first, then PV.
- Shut-down: open PV first.
- Fuse each PV string if ≥2P (e.g., 15 A MC4).
QR sticker here
Guide: gamerzcrave.com/dc-fridge
Safety: Correct polarity, proper fusing, keep dry/ventilated. Label “12 V ONLY”.