MEAN WELL GC30B-5P1J is a Class II AC/DC power adapter with a two-stage constant-current/constant-voltage battery-charging function. Its output is set to 16.8 V at no load, with 1.6 A rated current and 27 W catalogue-rated power. It uses a two-pole IEC 320-C8 inlet. The P1J DC output is center positive; select the charger to match the battery’s required charging conditions.
Product Datasheet
Download MEAN WELL GC30B Datasheet (PDF)
The GC30B section is on PDF pages 1, 2. Refer to the complete mechanical drawings and notes when planning installation.
Model-Specific Charging Output
| Complete ordering code |
GC30B-5P1J; safety-model designation GC30B-5. |
| DC output voltage |
16.8 V set point, measured at the output plug with no load; this is not a nominal battery-voltage designation. |
| Rated output current |
1.6 A; operating current range 0–1.6 A. |
| Rated output power |
27 W, as specified for this exact model. |
| Charging voltage range |
16–17 V across 0–100% rated load; this is the charging operating range, not a user-adjustment range. |
| Ripple and noise, maximum |
100 mVp-p. |
| Line regulation |
±0.5%; measured from low to high input line at rated load. |
| Typical efficiency |
78% at 230 VAC, rated load and the stated test ambient. |
Choose the charger by the battery manufacturer’s required charge voltage, current, chemistry and protection arrangement. The catalogue lists flooded, gel and AGM lead-acid batteries and Li-ion types described as lithium iron and lithium manganese; a modified charging specification may be required for the actual battery. Confirm that specification with the battery supplier and MEAN WELL.
Charging Sequence and Status
| Stage 1 |
Constant-current charging: current is limited while battery voltage rises toward the set voltage. |
| Stage 2 |
Constant-voltage operation: voltage remains near the set value while current tapers; the charging graph labels the low-current region float charging. |
| Two-colour LED |
Red: charging; green: float charging. The specification gives red ON above 250 mA and green ON below 100 mA. |
| Continuous-load use |
The catalogue identifies suitability for continuous loads and equipment with high surge demand; respect the exact model ratings and derating. |
The current thresholds are indicator conditions, not a universal battery state-of-charge measurement. No maximum charging time or guaranteed surge duration is specified for this model.
Input and Timing
| Input voltage |
90–264 VAC or 127–370 VDC; full-range input. |
| Input frequency |
47–63 Hz. |
| AC connection |
Two-pole IEC 320-C8 AC inlet; Class II, without an earth pin. |
| AC cord / inlet configuration |
Select a suitable mains lead for the IEC 320-C8 inlet; no mains-lead part number or inclusion is stated in these pages. |
| AC input current |
0.7 A at 100 VAC; 0.35 A at 230 VAC. |
| Inrush current, maximum |
40 A at 230 VAC. |
| Leakage current, maximum |
0.25 mA at 240 VAC. |
| No-load power consumption |
Less than 1.0 W. |
| Set-up / rise / hold-up time |
200 / 50 / 16 ms at full load; the default specification test input for this version is 230 VAC. |
Protection Functions
| Short circuit / overload |
Constant-current limiting with automatic recovery after the fault is removed. The overload entry lists 90–110% in constant-current mode and over 300% in pulsing mode. |
| Overvoltage |
110–135% of rated output voltage; clamping by a Zener diode. |
| Overtemperature |
IC1 junction temperature Tj above 130°C triggers output shutdown; automatic recovery after temperature falls. |
The pulsing-mode percentage is a protection characteristic, not a continuous output or timed peak-power rating. The 130°C threshold is an internal semiconductor junction temperature, not the permitted ambient temperature.
Environment and Derating
| Working temperature |
0°C to +50°C, with load derating. |
| Thermal load curve |
100% load from 0°C to +40°C; reduce to 70% at +50°C. Apply the plotted curve between these points. |
| Input-voltage load curve |
Full load within the specified 90–264 VAC range before applying temperature derating. |
| Cooling |
Natural convection; keep the enclosed case and surrounding air path unobstructed. |
| Working humidity |
20–90% RH, non-condensing. |
| Storage temperature / humidity |
-20°C to +85°C; 10–95% RH. |
| Temperature coefficient |
±0.03%/°C from 0°C to +50°C. |
| Vibration |
10–500 Hz, 2 G; 10-minute cycle, 60 minutes each along X, Y and Z. |
Dimensions, Output Plug and Configuration
| Specified body dimensions, L × W × H |
108 × 67 × 36 mm; fully enclosed plastic case. |
| Mechanical drawing |
Physical catalogue page 2: body layout, cable exits, power LED and four rubber feet. Allow for the attached cable and connector beyond the body dimensions. |
| Standard output connector |
P1J tuning-fork barrel plug; 2.1 mm inside diameter × 5.5 mm outside diameter × 11 mm barrel length. |
| Output polarity |
Center positive (+); outer barrel negative (−). |
| Model-specific DC cable |
UL1185 18 AWG; 1830 ±50 mm, according to the mechanical drawing for 16.8 V output. |
| Other connector / cable configurations |
Available by customer request. Specify the required plug, polarity and cable arrangement before ordering a different configuration. |
| Catalogue packing reference per unit |
309 g; this is the stated unit reference, not the carton total or an independently measured shipping weight. |
Match the mating socket’s dimensions, polarity and current capability to this P1J output. Additional plug, cable and battery-interface parts must be specified for the intended assembly; the P1J ordering code does not identify an extra adapter kit.
Catalogue Safety and EMC
| Insulation class |
Class II, without an earth pin. |
| Safety standards listed |
UL 62368-1; CSA C22.2; TUV BS EN/EN 62368-1; EAC TP TC 004. |
| Input-to-output dielectric withstand |
3 kVAC. |
| Input-to-output insulation resistance |
100 MΩ at 500 VDC, 25°C and 70% RH. |
| EMC emission |
BS EN/EN 55014-1 Class B; FCC Part 15 Class B; EAC TP TC 020. |
| EMC immunity |
BS EN/EN 61000-4-2, -3, -4, -5, -6 and -11; light-industry level, criterion A; EAC TP TC 020. |
| Catalogue warranty |
2 years. |
These statements describe the 2025-01-23 catalogue specification for this adapter version. Battery compatibility and the compliance of the completed equipment depend on its actual installation and configuration.
Measurement Conditions
Unless a parameter states otherwise, the catalogue uses 230 VAC input, rated load, 25°C and 70% RH ambient. The DC set voltage is measured at the plug terminals at 0% load; the charging voltage range is measured from 0% to 100% rated load.
Ripple and noise are measured at 20 MHz bandwidth using a 12-inch twisted pair terminated with parallel 0.1 µF and 47 µF capacitors.
