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Marinco 12v/24v 20 Amp 2 Bank On-Board Charger 28220

Was: $360.00
Sale Price: $181.95
This item qualities for
$7.50 Flat Rate Shipping *
Out of Stock

Manufacturer has discontinued this item, and has been replaced it with the Guest 2720A.

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Product InformationStore Part Number: 28220


Replaces: Guest GU2620A, Guest 2620A

Marinco 20 amp (10/10 Amp) 3-stage fully automatic electronic two bank charger is designed to recharge multiple 12 volt batteries configured in series and/or parallel. Each 12v battery bank receives a dedicated 12v 10 amps of charge current.

For 24v series configurations you must be using two 12v batteries/banks in series, and each 12v battery/bank will receive a dedicated 12v 10 Amp charging bank. 

ChargePro onboard chargers have the same housing and mounting dimensions as our traditional Charge Pro Guest chargers with a number of performance enhancements.

Recommended uses: Bulk charge of flooded and AGM maintenance free batteries group 24 (Approx 75 AH) through group 31 (Approx 110 AH), and charge/maintenance of batteries partially discharged up to 150 amp hours.


  • Charge flooded and AGM batteries
  • Microprocessor controlled for accurate charging
  • Universal input 120/230V input for go-anywhere freedom
  • Intuitive operation
  • Isolated outputs
  • Outputs can be put in series or parallel for higher voltage or current
  • Completely sealed, epoxy filled
  • IP68 waterproof
  • Designed for harsh marine and industrial environments - moisture, salt, shock and vibration tested
  • Non-corroding housing for ultimate reliability
  • Meet global industry standards including UL, CSA, ABYC, California efficiency regulations (CEC)
  • Footprint same as former Charge Pro Guest Chargers
  • ConnectCharge Plug for easy assembly to inlet (Item #150CCI) with no wiring
  • 2 Year Warranty


* Flat Rate shipping is for the lower 48 states only.

Tech Specs

  • Dimensions (LxWxH): 9.6 x 7 x 2.6 in
  • Weight: 8 lbs
  • Shipping Weight: 12 lb
  • AC Input Amps: 5 A
  • AC Input Volts: 120 V
  • AC Input Volts Freq.: 50–60 Hz
  • AC Input Volts Range: 100–240 V
  • Max Current, During Bulk Charge: 20 A
  • Bulk Voltage: 14.3 V
  • Bulk Output Current: 8.5-10 A
  • Absorption Voltage: 14.3 V
  • Absorption Output Current: 2-10 A
  • Model: 28220
  • Manufacturer: Guest/Marinco
  • Float Voltage: 13.3 V
  • Float Output Current: 0-2 A
  • Enclosure: Plastic Composite
  • Output Banks: 2
  • Waterproof: IP68 Rated
  • Regulatory Approval :
  • cULus: ANSI/UL 1236 "Battery Chargers for Charging Engine-Starter Batteries" E227501
  • ABYC: American Boat & Yacht Council = UL 1236 marine section A20 (Battery Chargers), E8 (AC Systems on Boats), E9 (DC Systems on Boats)
  • CEC: CB Mark for 120 V
  • FCC: Labeled, FCC Part 15 Class B EN 55022
  • RoHS: Compliant
  • Manufacturer Part #: 28220
  • Made In: Asia

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