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Free Budget Shipping
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ACS Auto Charger Selector - 12V - 50A
Our Automatic Charge Selectors are smart, 100% waterproof (IP67) and compact voltage-sensing relays that automatically manage the charge function between your start and service battery banks. DOLPHIN ACS are the ideal charging-relays for outboard engine boats.
SuperSafe (Unique feature)
Our cutting-edge “Current Limit Function” is built on MOSFET technology and includes a one-way operating “blocking diode function”: this prevents domestic (house/service) battery voltage drop when starting your engine or bow thruster. Result: no more sensitive electronics damaged onboard (GPS, etc.).
ACS is also intrinsically safe against ignition of atmospheric flammable vapours (ISO 8846), which makes it safe for installation on gasoline outboard engine boats.
SuperEfficient
No more manual battery selection. No more drained batteries. Our ACS reduces amperage operating current by up to 70% in comparison with other voltage-sensing relays currently on the market. Our ACS is particularly recommended for use with Lithium batteries.
100% WaterProof
ACS products are true Dolphins: they are IP67 certified.
Other assets...
With ACS, forget manual battery selection. Forget moving parts with a high failure rate. Forget battery voltage drop. Forget drained batteries. And, last but not least, DOLPHIN ACS reduces operating amperage by up to 70% in comparison with other voltage-sensing relays currently on the market.
Specifications:
- System voltage: 12 Volts
- Current rating: 50 Amp Continuous / 120 Amp Peak, 80 Amp Continuous / 190 Amp Peak
- ACS units come with a multi-colour LED control and a remote operation switch contact
![]() | WARNING: This product can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov. |
Product images may differ from actual product appearance.
- This item cannot be shipped to PO Boxes.
- This item can be shipped only within the U.S.
- UPC: 786142992068
- Mfr's Part #: 99206


Many items at NothingButSavings.com offer FREE Budget Shipping. Plus, as with many
of our competitors which do offer free shipping, we don't ask you to spend a specified
amount in order to qualify for FREE Budget Shipping.










