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Minn Kota MK-220 2 Bank 10 AMP Precision Onboard Battery Charger
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
$329.99
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SKU: WX2*0726015
Overview
Built for anglers who rely on multiple batteries and want dependable charging between trips, this onboard charger is designed to support a range of 12V battery types, including AGM, flooded lead acid, and lithium LiFePO4. Its selectable battery type and microprocessor-based control help deliver a charge profile suited to the battery being used, while automatic temperature compensation and low-line voltage compensation add practical protection when conditions or power supply vary. LED indicator lights make status checks straightforward, and the waterproof, shock-resistant, vibration-resistant construction is suited to the demands of boat-mounted use. Battery equalization for lead acid batteries is included to help maintain them each time the charger is connected.
Why Hunters Choose the Minn Kota
Supports 12v
AGM, flooded lead acid, and
Selectable Battery
Type helps match the charge
Automatic Temperature
Compensation adjusts for ambient temperature
Low-line Voltage
Compensation helps maintain consistent charging
Digitally Microprocessor-based
Control includes automatic wake-up for
Key Features
- 2-bank onboard charger with 10 amps total output.
- Selectable battery type supports 12V AGM, 12V flooded lead acid, and 12V lithium (LiFePO4).
- Automatic temperature compensation adjusts charging to ambient temperature fluctuations.
- Low-line voltage compensation helps deliver a consistent charge when outlet voltage drops below 120V.
- Digitally microprocessor-based control includes automatic wake-up for dead 12V lithium (LiFePO4) batteries.
- Waterproof, shock-resistant, and vibration-resistant construction for onboard use.
- Battery equalization helps clean and protect lead acid batteries during charging.
Best Used For
- Anglers needing a two-bank onboard charger for managing multiple 12V batteries on the boat
- Users running AGM, flooded lead acid, or 12V lithium batteries who want selectable charging
- Boat owners charging in variable conditions where temperature and low-line voltage compensation matter
- Hunters and anglers who need a waterproof, shock-resistant charger installed for regular use
- Owners of 12V lithium batteries that may need automatic wake-up from standby
Specifications
| Amperage | 10 AMP |
|---|---|
| Automatic Temperature Compensation | Yes |
| Battery Equalization | Yes |
| Battery Types Supported | 12V AGM, 12V flooded lead acid, 12V lithium (LiFePO4) |
| Digital Microprocessor Based Control | Yes |
| Led Indicator Lights | Yes |
| Longer Run Times | Yes |
| Low Line Voltage Compensation | Yes |
| Number Of Banks | 2 |
| Selectable Battery Type | Yes |
| Shock Resistant Construction | Yes |
| Shorter Charge Times | Yes |
| Vibration Resistant Construction | Yes |
| Wake Dead 12v Lithium Batteries From Standby | Yes |
| Waterproof Construction | Yes |
Pros
- Supports 12V AGM, flooded lead acid, and lithium LiFePO4 batteries.
- Selectable battery type helps match the charge curve to your battery.
- Automatic temperature compensation adjusts for ambient temperature changes.
- Low-line voltage compensation helps maintain consistent charging below 120V.
- Digitally microprocessor-based control includes automatic wake-up for standby 12V lithium batteries.
- Waterproof, shock-resistant, and vibration-resistant construction suits onboard use.
Considerations & Trade-offs
- Designed for 2-bank charging at 10 amps, so it’s suited to smaller battery setups rather than larger multi-battery systems that need higher output or more banks.
- Battery-type selection is important to use correctly, since the charger is built around matching the charge curve to supported 12V AGM, flooded lead acid, or 12V lithium (LiFePO4) batteries.
- The low-line voltage compensation helps maintain charging consistency when outlet voltage is below 120V, but it does not remove the need for a suitable power source.
- Lead-acid battery equalization is included, which is useful for supported lead-acid batteries but not a feature that applies to every battery type this charger supports.
Suggested Comparisons
- Onboard battery charger
- Multi-bank battery charger
- 12V AGM / flooded lead acid / lithium battery charger
- Marine battery charging system
Suggested Accessories
- Battery charger
- Battery maintenance accessory
- 12V battery accessory
- Marine electrical accessory
Frequently Asked Questions
What battery types can the MK-220 charge?
According to the product data, it supports 12V AGM, 12V flooded lead acid, and 12V lithium (LiFePO4) batteries.
Does this charger adjust for changing temperatures?
Yes. The charger includes automatic temperature compensation that senses and adjusts to ambient temperature fluctuations.
Can it handle lower outlet voltage?
Yes. The product description says it has low-line voltage compensation to deliver a consistent charge even if the outlet produces less than 120V.
What charging control features does it include?
It uses digitally microprocessor-based control and includes a battery type selector for a protected charge.
Is the charger built for marine use?
The description says it has waterproof, shock-resistant, and vibration-resistant construction, which is suitable for onboard use.