This battery maintainer is not designed to charge two 12V batteries in parallel. Item 6106041 or item 5826611 would be better options.
Free Gift Card Details
- The promotion will be automatically applied on the Shopping Cart page.
- To qualify for this offer, your order subtotal must equal $100 or more. Excludes gift cards, free item offers, warranties, Advantage memberships, tax and shipping.
- Free gift cards will be issued in the form of e-gift cards only, not physical gift cards.
- E-gift cards will be sent to the email address used in your billing address when your order ships or is picked up.
- Free e-gift cards expire 10/01/26.
- Promo code not valid on prior purchases or on Honda and STIHL products and cannot be combined with other promotional offers.
- Valid online and in participating retail stores.
- Limited-time offer. Subject to change without notice.
Strongway 6/12 Volt Battery Maintainer

This is a carousel with one large zoomable image and a track of thumbnails on the left. Select any of the thumbnail buttons to change the zoomable image on the right. If a thumbnail is a video or 360 degree image thumbnail, or the last thumbnail in the list, the button will open the product media modal.

Click or Tap image to Zoom
Shipping:
Available now
$19.99 Same DayStore Pickup:
3 in stock at Fredericksburg VA - Pickup in under 1 hr
- Compatible with Most Lead-Acid Batteries: Safely maintains AGM, standard (STD) and gel lead-acid batteries for vehicles, motorcycles, ATVs, boats and more
- Dual-Voltage Maintenance Output: Provides automatic 6V or 12V @ 2A to maintain and extend battery life in stored or seasonal-use vehicles
- Intelligent Automatic Charging: High-frequency smart charging technology adjusts output based on battery status for optimal safety and efficiency
- 7-Stage Charging Process: Complete 7-stage charging ensures deep, consistent charging with float maintenance for long-term battery health
- Quick-Connect Design: Includes both clamp and O-ring terminals with waterproof quick-connect cable for versatile, secure setup in any environment
See full description
Description
Key Specs
Reviews
Q & A
Accessories
Warranty
Compare
Product Summary
What's Included
- (1) Battery maintainer
Downloads

Features + Benefits
- Compatible with Most Lead-Acid Batteries: Safely maintains AGM, standard (STD) and gel lead-acid batteries for vehicles, motorcycles, ATVs, boats and more
- Dual-Voltage Maintenance Output: Provides automatic 6V or 12V @ 2A to maintain and extend battery life in stored or seasonal-use vehicles
- Intelligent Automatic Charging: High-frequency smart charging technology adjusts output based on battery status for optimal safety and efficiency
- 7-Stage Charging Process: Complete 7-stage charging ensures deep, consistent charging with float maintenance for long-term battery health
- Quick-Connect Design: Includes both clamp and O-ring terminals with waterproof quick-connect cable for versatile, secure setup in any environment
- Ideal for Battery Maintenance: Perfect for maintaining car, motorcycle, lawn equipment, powersports and marine batteries
- Safe and Reliable Operation: Microprocessor-controlled charging with built-in protections to prevent overcharging, reverse polarity and short circuits
Key Specs
| Attribute | Specification |
|---|---|
item# | 5820331 |
Brand | Strongway |
Manufacturer's Warranty | 1 year limited warranty |
Ship Weight | 1.0 LB |
Volts | 120 |
Amps | 2 |
Min. Temperature | 0 °F |
Max. Temperature | 104 °F |
Product Type | Maintainer |
Power Cord Length | 6 ft |
Charge Type | Smart |
Power Source | Other |
| Attribute | Specification |
|---|---|
Trickle Charge Amps | 1 |
Charges Multiple Batteries (qty.) | 1 |
Charges | Yes |
Conditioner | No |
Desulfates | Yes |
Maintains | Yes |
Overcharge Protection | Yes |
Polarity Reversal Protection | Yes |
For Use With | Auto battery |
Product Weight | 2.6000 lb |
Dimensions L x W x H (in.) | 3.8 x 2.9 x 3.6 in |
Reviews
Questions & Answers
Questions
-
· 6 months ago
CAN I PARALLEL TWO 12 VOLT BATTERIES WITH THIS CHARGER AND IF SO ARE EXTRA CABLES AVAILABLE. I HAVE TWO 12 VOLT MOWERS I WOULD LIKE MAINTAIN OVER THE WINTER.
1 answer-
StrongwayExpert12· 6 months ago
Helpful?
-
-
· 6 months ago
WEATHER PROOF ?
1 answer-
StrongwayExpert12· 6 months ago
This battery maintainer is not weather proof. It should be kept out of the elements and away from water.
Helpful?
-
-
· 8 months ago
Does this item need to be reset manually in case of a power failure or it continues working after the power returns?
1 answer-
StrongwayExpert12· 8 months ago
This battery maintainer will restart automatically with the same voltage once power is restored after an outage.
Helpful?
-
Accessories We Recommend
This is a carousel with auto-rotating slides. Activate any of the buttons to disable rotation. Use Next and Previous buttons to navigate, or jump to a slide with the slide dots.
Strongway Outdoor Extension Cord, 15 Amps, 12/3 Gauge, 50ft. Rust-Resistant Blades, Flexible to -40°F
Item # 5713536
Order today to get this price.
Northern Tool + Equipment AA Alkaline Batteries, 24-Pk.
Item # 53825
Order today to get this price.
Ironton 12V Automotive Battery Load Tester, 100 Amp, 6V/12V, 200–1000 CCA Range
Item # 5826581
Order today to get this price.
Ironton LED Truck Worklights, 4-Pk., 4in., 1000 Lumens, Clear Lens
Item # 6110788
Order today to get this price.
Ironton General-Purpose Lithium Grease, 14-Oz. Tube
Item # 89437
Order today to get this price.
Ironton LED Truck Worklight, 4in., 1600 Lumens, Clear Lens, 2-Pack
Item # 6110817
Order today to get this price.
Strongway Outdoor Extension Cord, 15 Amps, 12/3 Gauge, 50ft. Rust-Resistant Blades, Flexible to -40°F
Item # 5713536
Order today to get this price.
Northern Tool + Equipment AA Alkaline Batteries, 24-Pk.
Item # 53825
Order today to get this price.
Ironton 12V Automotive Battery Load Tester, 100 Amp, 6V/12V, 200–1000 CCA Range
Item # 5826581
Order today to get this price.
Ironton LED Truck Worklights, 4-Pk., 4in., 1000 Lumens, Clear Lens
Item # 6110788
Order today to get this price.
Ironton General-Purpose Lithium Grease, 14-Oz. Tube
Item # 89437
Order today to get this price.
Ironton LED Truck Worklight, 4in., 1600 Lumens, Clear Lens, 2-Pack
Item # 6110817
Order today to get this price.
Strongway Outdoor Extension Cord, 15 Amps, 12/3 Gauge, 50ft. Rust-Resistant Blades, Flexible to -40°F
Item # 5713536
Order today to get this price.
Northern Tool + Equipment AA Alkaline Batteries, 24-Pk.
Item # 53825
Order today to get this price.
Warranty
Manufacturer's Warranty
1 year limited warranty
Compare with Most Popular in Battery Maintainers
See All Battery Maintainers
See All Strongway Battery Maintainers
Currently Viewing This Product
Item # 5820331
$24.99Shipping:
Available now
$19.99 Same DayStore Pickup:
3 in stock at Fredericksburg VA - Pickup in under 1 hr
Item # 6214721
$17.99Shipping:
Factory shippedStore Pickup:
Not available - online only
Item # 167981
$24.99Reg $39.99Save $15.00Order today to get this price.
Shipping:
Available now
$19.99 Same DayStore Pickup:
3 in stock at Fredericksburg VA - Pickup in under 1 hr
Specifications
120
12
13.4
2
0.75
1.0
0 °F
25 °F
-
104 °F
104 °F
77 °F
Maintainer
Maintainer
Battery Set
6 ft
12 ft
-
Smart
Float On/Off
-
Other
Corded
Battery
1
-
1
1
-
4
Yes
Yes
Yes
No
-
Yes
Yes
-
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Auto battery
Vehicles, portable generators, sump-pump backup batteries
-
2.6000 lb
0.5000 lb
-
3.8 x 2.9 x 3.6 in
3.375 x 1.9375 x 2.5 in
-
See All Battery Maintainers
See All Strongway Battery Maintainers
Recently Viewed Items
This is a carousel with auto-rotating slides. Activate any of the buttons to disable rotation. Use Next and Previous buttons to navigate, or jump to a slide with the slide dots.
















