


Sterling Power
Sterling Power PCU4815 – Pro Charge Ultra 48V 15A Battery Charger
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The Sterling Power PCU4815 is a 48V 15A mains battery charger from the Pro Charge Ultra range — a compact, switch-mode charger built to keep 48V banks properly topped up from shore power or a generator. It delivers a full multi-stage charge rather than a crude constant voltage, so your batteries are charged correctly and held at the right float.
Charging Specifications
| Type | AC-input multi-stage battery charger (Pro Charge Ultra) |
|---|---|
| Nominal output voltage | 48V |
| Max output current | 15A |
| AC input | 80–270V AC, 40–70Hz — worldwide-compatible; accepts modified/quasi sine wave input from generators |
| Charge profile | Multi-stage (bulk, absorption, float) |
| Battery types | Lead-acid, AGM, and gel |
| Charging profiles | 11 pre-programmed profiles (AGM, Gel, Lead Acid, LiFePO4) plus 4 user-customizable profiles |
| Efficiency | 90.4% |
| Power Factor | 0.976 @ 230V AC |
| Full-load current draw | 9.8A @ 110V AC / 4.6A @ 230V AC |
| Ripple noise (RMS) | 14mV |
| Ground leakage | 0.5mA |
| Protection rating | IP22 (splash/drip protection) |
| Recommended generator size | ~1800W for cold start (unit draws ~900W) |
| Dimensions, weight & outputs | 315 × 215 × 90mm; 3.0kg; 3 isolated DC outputs |
| Warranty | 5 years |
Key Features
- 48V 15A multi-stage mains charging
- Correct, complete charging for lead-acid, AGM, and gel banks
- Compact, robust switch-mode design
- 3 isolated DC outputs
- 11 pre-programmed charging profiles (AGM, Gel, Lead Acid, LiFePO4) plus 4 user-customizable profiles
- Automatic desulphation/equalization cycle every 7–10 days
- Power Factor Correction rated 0.99 with synchronized MOSFET rectification
- Programmable power reduction (100% / 75% / 50% / 25%)
- Redundant high-voltage protection — processor-controlled plus backup analog circuit
- 32-LED information panel with dual digital LED meters and a power/reserve-capacity meter
- Optional remote control (5m cable) showing voltage/current, charge stage & duration, battery type, charger and battery temperature, and error messages
- Conformal-coated PCBs for salt-air and humidity resistance
Presented by Overland Kitted
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