Description
On-Board Battery Charger 20A / 12V – 2 Bank – 120V Input
Guest On-Board battery chargers have been redesigned from the inside out with the customer in mind. Our newest generation On-Board Marine battery chargers include leading advancements in digital charging technology and waterproof design/construction. Every Guest charger has a dedicated charging, sensing and control per bank. The easy to read graphics indicates the status of each battery bank through the charging process.
Features:
- All high frequency, digital charging technology
- Fully automatic 5-stage performance charging
- Dedicated battery charging, sensing and control per bank
- Expanded LED charge status monitor
- Wiring and battery fault detection
- Auto-maintain energy saver mode
- Up to 40 percent lighter
- 100 percent Waterproof (IP67) and shock resistant for all fresh and saltwater applications
- All models are pre-wired for easy installation
- For all 12 volt flooded and AGM lead acid batteries
- Built-in safety: reverse polarity, over-current, over-voltage, over-temperature and ignition protection. In-line fuses for maximum DC wire protection.
- 2 year warranty
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, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.
Specifications:
- Charger Output Voltage: 12/24v
- Charger Output – Amps: 20a
- Charging Banks: 2
- Portable: No
- Charger Input – Voltage: 120v
- Box Dimensions: 7″H x 10″W x 16″L WT: 8.15 lbs
- UPC: 046904904136
Owner’s Manual (pdf)
Brochure (pdf)

![Guest On-Board Battery Charger 20A/ 12V - 2 Bank - 120V Input [2720A]](https://www.bestmarinewiring.com/wp-content/uploads/2026/08/guest-on-board-battery-charger-20a-12v-2-bank-120v-input-2720a.webp)



![Analytic Systems AC Charger 2-Bank 70A, 12V Out, 85-264VAC In Power-Factor Correction [BCA1050-12]](https://www.bestmarinewiring.com/wp-content/uploads/2026/08/analytic-systems-ac-charger-2-bank-70a-12v-out-85-264vac-in-power-factor-correct.webp)
![Newmar PT-7 Battery Charger [PT-7]](https://www.bestmarinewiring.com/wp-content/uploads/2026/08/newmar-pt-7-battery-charger-pt-7.webp)
![Minn Kota On-Board Precision Charger MK-212 PCL 2 Bank x 6 AMP LI Optimized Charger [1832121]](https://www.bestmarinewiring.com/wp-content/uploads/2026/08/minn-kota-on-board-precision-charger-mk-212-pcl-2-bank-x-6-amp-li-optimized-char.webp)
![Newmar PT-25W Battery Charger [PT-25W]](https://www.bestmarinewiring.com/wp-content/uploads/2026/08/newmar-pt-25w-battery-charger-pt-25w.webp)
![Newmar PT-14W Battery Charger [PT-14W]](https://www.bestmarinewiring.com/wp-content/uploads/2026/08/newmar-pt-14w-battery-charger-pt-14w.webp)