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Deka Battery Isolator - 120 Amp

Deka Battery Isolator - 120 Amp

Item # DW08771
Our Price: $85.38
Battery Charger
This item qualifies for Free Shipping
Shipping Weight: 2 lbs
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This 120-amp battery isolator enhances your alternator performance for efficient charging, maximum power, longer battery life, and safer operation. Protects main starting battery from auxiliary drain. Regulates current for multi-battery system. 1-833-496-1390 to order Deka battery charger part number DW08771 or order online at etrailer.com. Free expert support on all Deka products. Guaranteed Lowest Price and Fastest Shipping for Deka Battery Isolator - 120 Amp. Battery Charger reviews from real customers.
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Deka Battery Charger - DW08771

  • Battery Isolators
  • 6V
  • 12V
  • 24V
  • 36V
  • 48V
  • 50V
  • Deka
  • Vehicle Battery to Auxiliary Battery

This 120-amp battery isolator enhances your alternator performance for efficient charging, maximum power, longer battery life, and safer operation. Protects main starting battery from auxiliary drain. Regulates current for multi-battery system.


Features:

  • Ideal for automotive, marine, and RV applications
  • Enhances your alternator performance for
    • Efficient charging
    • Maximum power
    • Longer battery life
    • Safer operation
  • Protects main starting battery from auxiliary drain
  • Regulates current for multi-battery system


Specs:

  • Application: alternators with amperage ratings below 120 amps
  • Capacity: 120 amps
  • Overall dimensions: 6-1/2" long x 4-1/2" wide x 2-1/2" tall excluding bolts
  • Quantity: 1
  • 1-Year limited warranty


Note: It is recommended that you purchase an isolator with an amperage rating above that of your alternator to prevent any damage to the isolator.


In a multi-battery system, the battery with the lower state of charge will drain power from the battery with the higher state of charge. This battery isolator protects your starting battery power so that no matter how weak your accessory battery becomes, the accessory battery will never drain power from the starting battery. This battery isolator also saves time by allowing simultaneous charging of both batteries. The amount of current flowing into each battery is determined by its state of charge, which guarantees that each battery will get fully charged, prolonging its life.



08771 Deka Battery Isolator - 120 Amperes




California residents: click here


Customer Satisfaction Score:


Customer Reviews

Deka Battery Isolator - 120 Amp - DW08771

Average Customer Rating:  4.8 out of 5 stars   (22 Customer Reviews)

This 120-amp battery isolator enhances your alternator performance for efficient charging, maximum power, longer battery life, and safer operation. Protects main starting battery from auxiliary drain. Regulates current for multi-battery system.

by:

Ordered by phone with Gwen and Stacy's help and elected to pickup the battery isolator in Wentzville, Missouri. Price was great and it has a one-year warranty. Within an hour or two they emailed it was ready. Pickup was also quick and professional. Item is an exact replacement for the 25-year-old failed part in terms of form, fit and function. Installed without rewiring or drilling and is working great! This could not have been a better experience!




by:

Great selection and very reasonable prices, many with discounts, often cheaper than that big online site. Particularly impressed with customer service when I had a product issue, called me right away and offered replacement item immediately with free UPS return label.




by:

Charges our auxiliary battery with no p roblems.




by:

On time great service




by:

All I can say is that Etrailer ROCKS! Ordered on Tuesday and got it Thursday. The only thing better is if I could’ve picked it up myself!

Thanks Etrailer for fantastic service!




by:

Prompt service and the product seems to work great




by:

Haven't installed it yet. Delivery was quick and the product was what I ordered.




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So far it works fine.




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Review from a similar DBI in Battery Charger


The battery isolator l purchased from you guys is serving me well with no issues.l don't have to worry about my starter battery running down except for unrelated reasons.




by:

Review from a similar DBI in Battery Charger


Timely delivery arrival, very good packing job, undamaged NEW items arrived due to good customer service. This is definitely a high quality unit. The heat generating epoxy-sealed electronics are protected from overheat by a generous amount of blue-anodized extruded aluminum cooling fins. This is a good value, and it is the reason that I bought 2 of them... One for use, and another for a back-up, in case I have a shorted battery... Keep-up the good work!




by:

Review from a similar DBI in Battery Charger


The 95 amp isolator is an excellent unit. Used on my RAM 2500 diesel pickup for my pop-top camper, this unit is quite sufficient to keep both my dual truck batteries and dual camper batteries charged by my 160 amp OEM alternator. Quality gear; Highly recommended!
Mike
Lt. Col. USMC (Retired)




by:

Review from a similar DBI in Battery Charger


Wiring instructions left a lot to be desired




by:

Review from a similar DBI in Battery Charger


Second one of these I have bought. Worked well but was fried when my alternator went bad. Great timely delivery and price.




by:

Review from a similar DBI in Battery Charger


Great product. Good service and good contact with me.




by:

Review from a similar DBI in Battery Charger


works




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Review from a similar DBI in Battery Charger





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Review from a similar DBI in Battery Charger


A very good company to buy from




by:

Review from a similar DBI in Battery Charger




22
22

See what our Experts say about this Deka Battery Charger

  • Battery Isolator Recommendation for 2012 Toyota FJ Cruiser Running Second Battery
    Since the alternator of your 2012 Toyota FJ Cruiser is rated for 100 amps the Deka isolator part # DW08771 that you referenced would be exactly what you are looking for. I attached a wiring diagram for this isolator for you to check out as well.
    view full answer...
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  • Is Deka Battery Isolator part # DW08771 Weatherproof
    The Deka Battery Isolator part # DW08771 is considered weather proof but I would not put it in a location that would allow it direct water access. So not on a boat trailer that would get submerged or directly out to get rained on. If you can avoid those things you'd be fine.
    view full answer...
  • Using Deka Battery Isolator to Charge Battery Bank on Shuttle Bus
    The Deka Battery Isolator # DW08771 is what you'd need for what you are looking to do. I attached a wiring diagram that shows how it wires up but basically you'd just need to wire the battery 2 auxiliary you see in the picture as a battery bank wired in series like you are wanting. This adapter then would allow you to charge these batteries as needed without draining the vehicle battery.
    view full answer...
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  • Wiring Diagram for Battery Isolator Use with Two 6 Volt Golf Cart Batteries
    The Deka Battery Isolator - 120 Amp # DW08771 will allow you to hook up to a 12V ignition battery as well as two 6V golf cart batteries connected in series. This is a great choice as long as your alternator amperage rating is below 120 amps. It is recommended that you purchase an isolator with an amperage rating above that of your alternator to prevent any damage to the isolator. I've attached a wiring diagram as you requested to assist, just where you see battery 2 auxiliary you will...
    view full answer...
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  • Deka Battery Isolator to Replace Eaton Sure Power 1202 Battery Isolator With Wiring Diagram
    The Deka Battery Isolator - 120 Amp # DW08771 will work with alternators with amperage ratings below 120 amps so it will work well with your 63-74 alternator with external regulator. You will simply connect it as the attached diagram shows. The extra post you asked about will not be used since you don't have a group 1 alternator, but that would be connected to a circuit breaker and eventually to the ignition switch.
    view full answer...
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  • Installing DEKA Battery Isolator with Two Wire Alternator
    You would not need a new plug. You would run the positive wire from the alternator to the 1 and A post of the Isolator # DW08771. Check out the attached picture for a wiring diagram.
    view full answer...
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  • How Does DEKA Isolator part # DW08771 Attach to Two Batteries
    I attached a diagram that shows how the DEKA Isolator part # DW08771 that you referenced needs to get wired to a vehicle with two batteries. Basically the center isolator post gets the alternator connection and then position 1 goes to the battery that cranks the vehicle starter and position 2 goes to the auxiliary battery positive terminal. The fourth terminal of this would not get used. The fourth one is the one with the smaller diameter threads.
    view full answer...
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  • How to Wire a Two Battery Universal Isolator # DW08771 on 2002 Ford E450
    As long as your two marine batteries are wired parallel and are essentially one battery you will wire the Sure Power Two Battery Universal Isolator, # DW08771, that you referenced as follows: The A post will go to the alternator output. The number 1 post will go to the vehicle main battery positive post. And the number 2 post will go to the auxiliary battery through a circuit breaker to the positive battery post.
    view full answer...
  • Will the Battery Isolator Voltage Result in the Battery Being Undercharged
    I contacted our technical representative at Deka and he stated it all depends on your alternator on your vehicle. If you have a remote sense alternator, the charge time will increase by 50%. Your battery will gain its full charge from your vehicles alternator. You wouldn't need to worry about your battery being undercharged. The remote sense alternator provides highly accurate voltage readings and optimizes your vehicle battery state-of-charge. This results in the improved efficiency and...
    view full answer...
  • How to Wire Deka # DW08771 Battery Isolator
    I've found a wiring diagram for the # DW08771 Battery Isolator. Terminal 1 would connect to the positive battery terminal of the main battery. The original wire from the alternator to the main battery would be removed from the battery and installed on terminal 1. Terminal E would connect to the an ignition circuit that's hot only when the key is switched on via a 6 amp breaker. Terminal A would connect to the battery lead on the alternator and Terminal 2 would connect to the positive terminal...
    view full answer...
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  • How to Wire Up a Sure Power 120 Amp Two Battery Isolator
    Battery isolator # DW08771 will have connection posts for each battery and for an alternator. The main battery will connect to position one and the alternator to the A post. The second battery will attach to the 2 via a circuit breaker that is rated appropriately for the battery. Output from the second battery positive post will then go to the items you want to power. I have included a picture that should help. If you do not have a group 1 alternator then the E post will not be used. The...
    view full answer...
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  • Isolator Recommendation for 2014 Chevrolet Silverado Using 2nd Battery
    The highest rated isolator that we offer is one like the Deka Battery Isolator, # DW08771, which has a capacity of 120 amps. From the information that I was able to gather on a 2014 Chevrolet Silverado it has an alternator with an amp rating greater than 120. This isolator can be used with a higher amp rating alternator because an alternator typically will not be producing it's full amperage unless something were to require it like a dead vehicle battery. In this case, if the full amperage...
    view full answer...
  • Wiring Diagram for Deka # DW08771 Battery Isolator
    I've found a wiring diagram for the # DW08771 Battery Isolator. Terminal 1 would connect to the positive battery terminal of the main battery. The original wire from the alternator to the main battery would be removed from the battery and installed on terminal 1. Terminal E would connect to an ignition circuit that's hot only when the key is switched on via a 6 amp breaker. Terminal A would connect to the battery lead on the alternator and Terminal 2 would connect to the positive terminal...
    view full answer...
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  • Installing the Deka Battery Isolator In Marine Application With Outboard Motor
    For your outboard motor on a boat applicaiton, when installing the Deka Battery Isolator - 120 Amp # DW08771 you can just connect the alternator terminal to the starting battery as you mentioned. This will still isolate a second battery in the format that you have stated. I've attached a diagram to help and it shows the dotted line from the alternator back to the positive terminal of the battery. This will allow the second battery to charge with ignition on, but will not allow second...
    view full answer...
    Image 1 for
  • Wiring diagram for Battery Isolator
    For your battery isolator similar to # DW08771, you will have connection posts for each battery and for an alternator. The main battery will connect to position one and the alternator to the A post. The second battery will attach to the 2 via a circuit breaker that is rated appropriately for the battery. Output from the second battery positive post will then go to the items you want to power. I have included a picture that should help. If you do not have a group 1 alternator then the E...
    view full answer...
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  • How to Charge Trailer From Secondary Battery with Isolator
    It sounds like you currently have an isolator like the Deka # DW08771 installed between your primary and secondary battery on the trailer. If this is the case, then running a 12V wire from the 7-Way connector to the secondary battery positive post should give you exactly what you are looking for. I have included a diagram that might help with the wiring for this setup.
    view full answer...
    Image 1 for
  • Battery isolator for 1997 Chevrolet k2500
    In order to determine compatibility of the Deka Battery Isolator - 120 Amp part # DW08771, the amperage rating must be above of that of your alternator to prevent any damage to the isolator. That is the only thing that determines compatibility.
    view full answer...
  • How Does Deka Battery Isolator Get Wired?
    When installing the Deka Battery Isolator - 120 Amp # DW08771 you actually do not tap into the ignition systems. Instead you will run the wire from the alternator to the A post on the Isolator, then run a wire from the number 1 post of the isolator to your starting battery, and another wire from the number two post of the isolator to the secondary battery. Since the alternator will only have power with the vehicle running, it is what keeps you from needing to tap into the ignition system. This...
    view full answer...
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  • Wiring Isolation Solenoid DW08771 on 1993 GMC 3500
    You are correct when using the DEKA isolator part # DW08771 on a vehicle like yours you wouldn't use the E post.
    view full answer...
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  • Deka Battery Isolator Wiring From Main Battery
    The 'E' connection you are referring to on the Deka Battery Isolator # DW08771, is the connection made to any of your vehicle's high amperage remote turn on lead, or ignition wire. This connection will not go to your ignition coils positive number 15 terminal.
    view full answer...
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  • Will The Deka Battery Isolator # DW08771 Send Multiple Current Levels To Different Batteries
    The Deka Battery Isolator - 120 Amp # DW08771's main job is to protect your starting battery no matter how low the house battery gets and while it does have a regulator it will only send one voltage level to both the starting battery and house battery.
    view full answer...
  • Where to Install Charger With Alternator and Main/Auxiliary Battery Setup With Deka Battery Isolator
    Following the diagram for the # DW08771 wiring, the charger will need to be wired directly to the battery you want to charge. If you want to charge the other battery you will either need an additional charger, or you will have to unhook the charger and attach it to the other battery. The "magic" effects will work on the battery you have the charger connected to. The same is also true for the solar panel, it will need to be attached directly to the battery you want to charge. I have attached...
    view full answer...
  • How To Protect the 12 Volt Circuit On a 7-Way From a Generator
    It sounds like you are asking if you can use a battery isolator to protect the battery on your tow vehicle from the generator while powering items on your trailer. If that is the case then yes, the Deka Battery Isolator part # DW08771 will work for you. However, I doubt you will be drawing anywhere close to 120 amps so you would most likely save some money with the 95 amp version, part # DW08770.
    view full answer...
  • How Do Batteries Charge with Deka Battery Isolator DW08771
    If you intend to wire the two batteries together they should be the same type but if you want to add a second independent battery for the winch/lights/stereo it can be a different type and/or have a different amp-hour (Ah) rating. A separate system means no risk of depleting your vehicle's primary battery. You want to consider the power draw of each of the items and select a battery with a high enough Ah rating. The winch will draw much more power than the lights or stereo so that is...
    view full answer...


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