Sterling Power BB4812 DC to DC Charger and Converter, 48V to 12V 40A
- Regular price
- $398.00
- Sale price
- $398.00
- Regular price
-
$399.00
Will it fit my RV?
We don’t list this part for specific RV brands. Compare the dimensions with the part you’re replacing before ordering.
Prepaid return label, no restocking fee. Details
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The Sterling Power BB4812 is a two-in-one 48V to 12V unit for RVs, vans, boats and off-grid builds that run a 48V lithium or lead acid house bank but still need 12V power. It can feed 12V loads directly or charge a separate 12V battery.
As a converter it turns a 39-60V DC supply into a steady 12V output, so fridges, pumps, LED lighting, USB-C chargers or a small inverter can run without a 12V battery in the system (you can still add one). As a charger it behaves like a multistage battery charger with adjustable charge voltages and a 40A current limit. Out of the box the output sits at 13.8V and delivers up to 40A, about 550W.
Features
- Works as a stand-alone 48V to 12V converter or as a 12V battery charger
- 12V battery optional; the unit is current limiting
- Adjustable charge voltages, multistage charging
- High internal capacitance for a very stable 12V supply
- Self-recovering protections: input under-voltage, input over-voltage, output over-voltage, over-current and charge over-temperature
- Thermostatically controlled, variable low-speed fan
Specifications
- Input voltage: 39-60V DC (48V lithium or lead acid bank)
- Output: 40A at 13.8V default, about 550W continuous
- Default output voltage: 13.8V (adjustable)
- Efficiency: 98%
- Quiescent current: 1 mA
- Operating temperature: -20 to 60 °C (-4 to 140 °F)
- Cooling: Thermostatically controlled variable-speed fan
- Approvals: CE, UKCA
- Dimensions: 165 x 130 x 56 mm (6.5 x 5.1 x 2.2 in)
- Weight: 1.0 kg (2.20 lb)
Genuine Sterling Power with Sterling Power's warranty. Ships from our warehouse in Upland, California. Not sure it fits your setup? Ask us before you order.
Eligible unused and uninstalled physical products may be returned
within 30 days after delivery.
Regular sale and discounted products are eligible for return.
Only products clearly marked “Final Sale” before purchase are
non-returnable.
Conditions and exclusions apply. See our Return and Refund Policy.
Free standard shipping is available on eligible physical-product orders delivered within the contiguous United States, with no minimum order amount.
Black Series generic replacement parts and products or orders that are oversized, require freight shipping, are special-order, contain hazardous materials, or are delivered to remote or limited-access areas are excluded. Any applicable shipping charge will be displayed at checkout before you submit your order.
In-stock products are generally processed within 1–2 business days. Estimated delivery is approximately 4–12 business days, depending on the product, destination, carrier, and delivery method.
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