Brand: ProMariner
ProMariner ProIsoCharge 120 Amp Battery Isolator, 1 Alternator 2 Battery Banks
ProMariner ProIsoCharge 120 Amp Battery Isolator, 1 Alternator 2 Battery Banks
Last one
About this product
The ProMariner ProIsoCharge Battery Isolator (Model 23121) provides digitally controlled, zero-voltage loss power distribution for 12V DC marine electrical systems. Designed to charge up to two separate battery banks from a single alternator, this unit prioritizes charging for battery banks under load while safeguarding the health of the engine start battery.
- System Voltage: 12V DC
- Capacity: 120 Amp max
- Configuration: 1 alternator input, 2 battery outputs
- Dimensions: 5.35 in. x 5.875 in. x 3.125 in.
- Weight: 2 lbs.
- Protection: Ignition protected and waterproof (IP66 rated)
- Features: Real-time LED status indicators, ignition-controlled management, and remote sense connection for advanced regulators
- Included: Terminal stud insulator boots and protective snap-on safety cover
Regulatory note: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit P65Warnings.ca.gov.
Manuals & videos
- Secure checkout
- 21-day return requests
- Free standard shipping $100+
Product facts
- CT SKU
- CT-102043
- Model / MPN
- 23121
- UPC / GTIN
- 031669231214
- Package dimensions (H × W × L)
- 5" X 7" X 8"
- Package weight
- 2.13 lb
- Country of origin
- TAIWAN
Fit-sensitive item: confirm measurements, model numbers, and manufacturer details before ordering. Tug & Tow does not guarantee universal compatibility from a product page alone.
Complete the setup
Recommended accessories
Useful add-ons matched to this product.-
Ancor
Ancor 2 AWG Marine Grade Battery Cable, Red, 25'
$115.47
-
Ancor
Ancor 2/0 AWG Battery Cable, Black, 100 ft.
$786.72
-
Ancor
Ancor Red 2/0 AWG Marine Battery Cable, 100 ft.
$786.72
-
Ancor
Ancor Heavy Duty Lug, 2 Gauge, 5/16 in. Post, 2-Pack
$4.82
-
Ancor
Ancor Heavy Duty Tinned Copper Lugs, 2 AWG, 5/16 in. Post, 25-Pack
$42.66
-
Ancor
Ancor Heavy Duty Tinned Copper Lugs, 1 AWG, 5/16 in. Post, 25-Pack
$44.39
Shipping & returns
Shipping & returns
Request an eligible return within 21 calendar days after delivery. Every physical return requires written approval and an RMA number and must be shipped within five business days after the RMA is issued. The customer pays return shipping for an ordinary return. Tug & Tow provides prepaid return shipping for a verified damaged, defective, short, or incorrect shipment. We do not charge a restocking fee. See Shipping & Returns for eligibility, exclusions, and details.
Fit & compatibility
Fit & compatibility
Review the product title, description, images, dimensions, part numbers, and manufacturer details before purchase. For fit-sensitive items, confirm compatibility with your boat, RV, trailer, vehicle, or equipment.
Need help choosing?
Need help choosing?
Send us the product link or SKU, plus details about your boat, RV, trailer, vehicle, or project. We will help you narrow down the right option when product fit is not obvious.
