For distributors and installers sourcing a PWM solar charge controller for several battery voltages, the SDB-48V Series provides a defined 40A, 50A or 60A charging-current range in one product family. The series is specified for 12V, 24V, 36V and 48V systems, making it a practical candidate for small off-grid solar packages that need a consistent controller platform across different projects.
SDB-48V models and confirmed specifications
The database-listed models are SD4048B, SD5048B and SD6048B. Their rated charging currents are 40A, 50A and 60A respectively. The controller automatically recognizes 12V, 24V, 36V or 48V battery-system voltage. The specified maximum PV open-circuit voltage is 100V, so the PV array design should be checked against that limit before an order is finalized.
- Product type: PWM solar charge controller
- Rated charging current: 40A / 50A / 60A
- Battery-system recognition: 12V / 24V / 36V / 48V automatic recognition
- Maximum PV open-circuit voltage: 100V
- Battery support listed: lead-acid, LiFePO4 and lithium-ion
- Additional functions: 5V USB output, load timer up to 24 hours and manual load switching
- Dimensions: 184 × 129 × 39 mm
Matching the controller to an off-grid project
The automatic voltage recognition is useful when a supplier or distributor handles 12V through 48V battery systems, but the installed battery voltage and PV open-circuit voltage still need to be confirmed for every project. The 40A, 50A and 60A variants give buyers a way to align controller selection with the planned charging current instead of treating the series as one fixed model. The 5V USB output and timed or manually switched load function can also suit compact lighting, monitoring or auxiliary-load packages where those functions are required.
Because the specification identifies this range as PWM, it should be evaluated as a PWM controller rather than compared with MPPT conversion performance. Buyers should also avoid applying it to a PV array whose open-circuit voltage exceeds 100V, or assuming that a 48V system is suitable without confirming the complete battery and PV configuration.
What to confirm before a bulk order
A wholesale solar equipment enquiry should identify the required model—SD4048B, SD5048B or SD6048B—the battery-system voltage, the planned PV open-circuit voltage, battery chemistry, quantity and destination market. For distributor supply, it is also sensible to confirm packaging, labeling, documentation, sample requirements and quotation details before placing a bulk order. These items are project and order details to be confirmed with GERIXI, not assumptions about a standard shipment.
See the SDB-48V Series product details for the listed product information. For model selection, distributor supply or a quotation, use the GERIXI contact page and send the battery voltage, PV open-circuit voltage, required current variant and quantity.
