Sterling Power
Sterling Power PCU2420plus – Pro Charge Ultra Plus 24V 20A Battery Charger
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The Sterling Power PCU2420plus is a 24V 20A mains battery charger from the Pro Charge Ultra Plus range — a compact, switch-mode charger built to keep 24V banks properly topped up from shore power or a generator. It delivers a full multi-stage charge rather than a crude constant voltage, so lead, AGM, gel, and lithium banks are charged correctly and held at the right float.
Pro Charge Ultra Plus models add selectable battery profiles (including lithium), advanced diagnostics, and remote-control capability via the PCUR remote.
Charging Specifications
| Type | AC-input multi-stage battery charger (Pro Charge Ultra Plus) |
|---|---|
| Nominal output voltage | 24V |
| Max output current | 20A |
| AC input | Wide-range AC mains, 50/60 Hz |
| AC input voltage / frequency range | 90–270V AC, 40–70Hz |
| Charge profile | Multi-stage (bulk, absorption, float) |
| Charge profiles | 11 pre-programmed profiles spanning AGM, Gel, sealed, open, calcium, and LiFePO4 chemistries, plus 4 user-customizable profiles |
| Battery types | Lead-acid, AGM, gel, and lithium |
| Remote | Compatible with the PCUR remote control (up to 30 ft range, multi-lingual display) |
| Efficiency & Power Factor | 90.4% efficiency; Power Factor 0.976 (Power Factor Correction rated 0.99) |
| Ground leakage | 0.5mA |
| Ingress protection | IP22 splash rated; conformal coating for salt-air resistance |
| Recommended generator size | ~1200W (unit draws ~600W at full load) |
| Certifications | UL certified; ABYC drip-test compliant |
| Dimensions, weight & outputs | 260 × 215 × 90mm; 2.0kg |
| Warranty | Backed by Sterling's factory warranty |
Key Features
- 24V 20A multi-stage mains charging
- Selectable profiles for lead-acid, AGM, gel, and lithium
- Remote monitoring and control via the PCUR
- 11 pre-programmed profiles spanning AGM, Gel, sealed, open, calcium, and LiFePO4 chemistries, plus 4 user-customizable profiles
- Progressive absorption charging algorithm; automatic desulphation/equalization cycle every 7–10 days
- Power Factor Correction rated 0.99; synchronized MOSFET rectification
- Programmable power reduction at 100%/75%/50%/25%
- 32-LED information panel; dual digital meters; digital power-reserve meter
- Remote control compatible up to 30 ft, with multi-lingual display
- Redundant high-voltage protection; temperature compensation with high-temperature shutdown; ground leakage monitoring at 0.5mA
- Automatic 12V/24V selection and multiple-unit stacking for larger banks
- BMS shutdown via auxiliary cable grounding; positive-signal activation for Power Supply Relay engagement
Presented by Overland Kitted
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