Description
The Go Power GPC-55-MAX (part number 66169) is a 55A converter and smart battery charger for 12V RV electrical systems. When connected to grounded 120V AC shore or generator power, it supplies DC power to the RV's 12V circuits while charging a single battery bank. Its maximum continuous output is 55A, shared between the connected loads and battery charging.
Charging operation
In its standard automatic mode, the GPC-55-MAX uses three charging stages: Boost at 14.6V, Normal at 13.6V and Storage at 13.2V. If the charger remains in float for more than seven days, it performs an automatic equalization/boost cycle before returning to float.
For compatible lithium batteries, the unit can be switched to Fixed Output mode and adjusted from 13V to 16.5V to match the battery manufacturer's required charging voltage. The standard automatic profile is intended for lead-acid batteries. Go Power warns that the charging voltages can damage gel-cell batteries; do not use the GPC-55-MAX with gel batteries.
Specifications
| Model | GPC-55-MAX |
|---|---|
| Manufacturer part number | 66169 |
| Maximum continuous DC output | 55A |
| Continuous output power | 800W |
| Standard charging voltages | 14.6V Boost / 13.6V Normal / 13.2V Storage |
| Fixed-output adjustment | 13–16.5V DC |
| Battery banks | 1 |
| AC input | 105–135V AC, 47–63Hz |
| Maximum AC current at 108V | 11A |
| Typical efficiency | Greater than 85% |
| Operating temperature | 0–45°C |
| Dimensions (L × W × H) | 9.5 × 7.8 × 3.5 in |
| Weight | 7 lb |
| Warranty | 2 years limited |
Installation
Connect the AC input to a grounded 120V source and use DC conductors sized for the installation. Go Power recommends a DC breaker within 18 inches of the battery. Mount the converter in an interior compartment with adequate airflow; it is not designed for a zero-clearance enclosure. For lithium charging, set Fixed Output mode to the voltage specified by the battery manufacturer before use.
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