High-current battery systems need more than a larger charging number on a product label. Importers and installers must match the controller current, battery voltage, PV open-circuit voltage, battery chemistry, cable layout, and load-control requirements. The SA-C series provides 120 A and 150 A PWM options for 12 V, 24 V, 36 V, and 48 V battery systems.
When a 120A or 150A controller makes sense
The SA-C series is intended for off-grid battery charging and DC lighting projects that need a high charging-current option. SA48120C is the 120 A version and SA48150C is the 150 A version. The correct choice depends on the battery bank, the planned PV array, the allowed charging current, and the installation company’s protection design.
Core specifications to check before ordering
| Item | Listed specification |
|---|---|
| Model options | SA48120C / SA48150C |
| Charging current | 120 A / 150 A |
| Battery systems | 12 V, 24 V, 36 V, and 48 V |
| Controller type | PWM |
| PV open-circuit limit | 100 V maximum |
| Battery support | Lead-acid, LiFePO4, and lithium-ion options listed |
| Enclosure | 187 × 240 × 69 mm |
The 100 V value is an open-circuit limit, not a promise that every PV array within that number is suitable for every battery voltage. Cold-weather panel voltage, controller settings, cable losses, and the battery manufacturer’s charging limits should all be checked before installation.
Battery and load-control planning
The controller is listed for lead-acid, LiFePO4, and lithium-ion battery applications, but the final settings must match the exact battery chemistry and battery-management requirements. The series also lists a 5 V/2 A USB output and light/timer load control. These functions can be useful in DC lighting and small off-grid packages, but they should not replace a separate protection and distribution design.
Installation sequence and protection
For a typical installation, match the battery voltage and charging settings first, confirm the PV array against the controller instructions, and use correctly sized cables and protective devices. The product information recommends connecting the battery first, then the PV input, and then the DC load. The actual installation should follow the supplied manual and local electrical requirements.
What distributors should confirm in a quotation
For an SA-C order, provide the selected 120 A or 150 A model, battery voltage, battery chemistry, PV configuration, destination market, quantity, and expected DC load. GERIXI can then confirm the available label or packaging customization, MOQ, quotation, lead time, warranty terms, and technical documentation for the exact configuration.
View the SA-C product page for the current product information and inquiry options.
