Item #889105

Yandina Combiner 200A Battery Combiner - C200

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The two battery Yandina Combiner 200 battery combiner is a voltage-sensing relay (13.3V) which connects two batteries together when either is receiving a charge. When the charging stops the relay opens allowing each battery operates independently. You never have to worry about switching to "BOTH" when your engine is running and forgetting to switch back to save your starting battery from discharge when you stop.

  • 175A continuous rating, 400A closing current (2 seconds), 200A for 5 minutes
  • Suitable for alternators up to 200A, up to 18V (smaller charging sources may be able to use Combiner 100)
  • Waterproof, rated IP68 protected from long-term immersion
  • UNLIMITED WARRANTY, no time limit, no proof of purchase, even covers lightning damage
  • No voltage drop; batteries reach full charge
  • Electronic thermal monitoring with shutdown if overloaded; auto restart
  • Minimal wasted power, no heat sink or cooling required
  • Can be used on alternators with internal regulators
  • No special wiring for alternators with external sense
  • Simple, basic installation, two battery wires and ground
  • Green LED indicates when combined
  • Red LED indicates thermal overload shutdown
  • Draws no current when batteries are not being charged
  • Draws less than 250 milliamps from alternator when charging
  • Optional external remote control for Off, Automatic, On (sold separately)
    • Remote "ON" can be used to parallel banks for assisted engine starting
  • Withstands ambient temperature to over 175°F for exposed or engine compartment mounting
  • No diodes to burn out if accidentally shorted
  • Voltage regulator feature to limit voltage to safe level for sealed AGM type batteries


  • Model No. C200
  • Voltage: 12V DC
  • Amperage:
    • 75A (continuous)
    • 400A closing current (2 seconds)
    • 100A for 5 minutes
  • Waterproof Rating: IP68

Owner's Manual and Installation Guide (1.35 MB)

Part Numbers for Yandina Combiner 200A Battery Combiner - C200

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If I order the battery isolator I'm able to charge a lithium battery in my boat from my lead acid start battery correct? And how do I get the remote option and does it plug into the box?

Asked by: Erick
Hello, please refer to Yandina Technical support at 843-524-2282.
Answered by: RJT Outlet
Date published: 2024-04-03

I have one of these Yandina 200.  I have a 140 amp alternator. Sometimes the combiner will shut down on overload(red light).  Then I have to disconnect both positives to reset it. Is it defective or is that the way it’s made. 

Asked by: Ronn
Sounds like defective, call tech support they are helpful!
Answered by: Mr Ed
Date published: 2023-09-24
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