Sterling Power PSR253 Pro Split R Battery Isolator, 12V 250A 3-Bank
- Regular price
- $273.60
- Sale price
- $273.60
- Regular price
-
$288.00
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 PSR253 Pro Split R is a 3-output battery isolator for 12V systems with alternators up to 250A. It suits boats, RVs and trucks where one alternator has to charge an engine battery plus one or more house or thruster banks.
Traditional split-charge diodes lose around a volt, which leaves house batteries undercharged, and compensating for that loss can overcharge the starter battery. The Pro Split R uses micro-processor controlled switching with almost no voltage drop, and it can briefly isolate a full engine battery so the alternator's regulator sees only the empty house bank and charges it harder. Sterling states it is not suitable for modern European vehicles or any vehicle with an advanced ECU; use a battery to battery charger there.
Features
- Micro-processor controlled zero-volt-drop splitting
- Sends the most current to the bank that needs it
- Temporarily isolates a full engine battery so the house bank charges faster
- Blocks back-feed between banks under heavy load
- Disconnects the alternator if its own regulator fails, so batteries are not boiled
- Isolates any bank being back-fed a high voltage from a faulty charger
- LED display shows which channels are active
- Fail-safe: engine battery and alternator stay connected if the unit fails, and the engine battery is charged first
Specifications
- System voltage: 12V
- Max alternator output: 250A
- Battery bank outputs: 3
- Dimensions: 150 x 80 x 180 mm (5.9 x 3.1 x 7.1 in)
- Weight: 1.3 kg (2.87 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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