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Description
Dual Pro SS4 Auto 40A - 4-Bank Lithium/AGM Battery ChargerSS4 Auto 40A 4 Bank Lithium AGM Battery Charger Latest Technology: Detects if your battery is Lithium or AGM Automatically charges both Lithium and AGM batteries for optimal performance Fully automatic. Completely and safely charges both Lithium and AGM batteries Algorithms designed and validated with battery manufacturers for a 100% charge Startup feature will wake up batteries that have turned off due to low voltage protection Auto return to charge
SS4 Auto 40A - 4-Bank Lithium/AGM Battery Charger
Latest Technology:
- Detects if your battery is Lithium or AGM
- Automatically charges both Lithium and AGM batteries for optimal performance
- Fully automatic. Completely and safely charges both Lithium and AGM batteries
- Algorithms designed and validated with battery manufacturers for a 100% charge
- Startup feature will wake up batteries that have turned off due to low voltage protection
- Auto return to charge feature
- Quickest charge times in its class
- Unbeatable performance, reliability, safety, and quality delivered by DUAL PRO®
Features:
- Waterproof - Use on land and in fresh and saltwater
- TROUBLE-FREE—Just Plug It In and Forget It!
- Independent outputs
- Fully automatic/multi-stage charging
- On-board diagnostic codes
- FCC 15 Parts A & B interference compliant
- Approved and meets ISO 8846 Marine standards
- Ignition protected (US Coast Guard 33 CFR 183.410)
- 3-Year Warranty
AutoProfile Intuitive Charging Technology Lithium/AGM
Professional and Sportsman Series chargers have set the standard in the marine industry for more than two decades, known as the safest, most reliable, and best performing chargers in the industry.
AutoProfile Intuitive Charging Technology provides flexibility for your charging system, ready for the ever-changing lithium battery technologies. No matter if you choose Lithium or AGM batteries for your boat, Dual Pro is ready to keep your boat on the water longer, enhancing battery performance and extending battery life.
This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.Specifications:
- Charger Input - Voltage: 120v
- Charger Output - Amps: 40a
- Charger Output Voltage: 12/24/36/48v
- Charging Banks: 4
- Portable: No
- Box Dimensions: 11"H x 11"W x 17"L WT: 23 lbs
- UPC: 738562002933
Brochure (pdf)
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.0 ★★★★★
Based on 11 reviews
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Product Reviews
★★★★★ 4
Nice tactile feel
Style: 2024 Model
Works right out of the box. Installation was simple. Probably should have gotten the next small size, as it is larger than I expected. But I like the key response and the feel of the mouse, so I'm keeping it. Nice, inexpensive keyboard and mouse.
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Reviewed in the United States on December 11, 2025
★★★★★ 5
HIGHLY RECOMMEND
Style: 2024 Model
LOVE LOGITECH PRODUCTS. BEEN USING THEIR KEYBOARD AND MOUSE FOR 30 YEARS. A BIT PRICEY BUT WELL WORTH IT. OVER 30 YEARS I HAVE ONLY NEEDED TO REPLACE THE SET 2 TIMES BUT IM A FAST TOUCH TYPER
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Reviewed in the United States on May 31, 2026
★★★★★ 1
Well, Logi (Logitech)'s normally great record has been broken...
Style: 2024 Model
Gotta vent.
I've had my Logitech K800 forever and a day and LOVED it. Never any performance problems, smooth, comfortable, easy to use, and took a beating daily for years. Got it through work, so it was more expensive than your usual, but it couldn't last forever. It started being unable to take a charge, so I knew I would have to retire it. (They stopped making these (WHY???) and they're selling after-market for a fortune.)
I have Logi all things keyboard, mouse, etc., so went with them again. Bought a K650, but out of the gate, it started doing weird stuff, like repeating keys when you weren't even touching the keyboard, jamming up, or just stopping functioning. Did all the usual troubleshooting, but nothing worked.
Just to save time, I sent it back here and replaced it with an MK540. Son of a gun if it didn't start immediately doing the same things. NOW I was cranky, so I did my online research and learned these are well known problems for others, who also couldn't solve them. I then went to Logi tech support. Got a level 1 person who walked me through the standard steps I'd already done multiple times (Did you turn it off and on again? :-D), gave me long lists of things to try, then at the end, when nothing worked said, "Well, it's within 30 days so just return it to the seller, and here's a link to our other keyboards."
"Ummm," I said, "this is the exact same circumstance with two DIFFERENT keyboards in a row. As I had no trouble with my previous Logi keyboard, and nothing else has changed on my end, it seems logical that the problem is with the new software, hardware or some QA problem with producing these models. Why would I go buy another one when we don't know WHY it's doing this, suggesting I could go through this all over again?" (BTW, a MAJOR inconvenience for days). Her answer (twice): "Don't worry, it'll be fine, just go get another one." OMG.
Stubborn, so I gave it a third shot (MX Mechanical) now for 3x the money hoping better quality would help, but guess what? I've now received my 3rd notice from Amazon saying delivery will be delayed, this time with no date estimate known.
I tried, Logi, but even I am done. Buying a highly rated other keyboard that has all the features I need. Logi, not sure what you're doing with these membrane ones (vs. mechanical), but it's not working. If you could ship me a K800, I'd so appreciate it. :-D K
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Reviewed in the United States on October 18, 2024
★★★★★ 5
Perfect keyboard with wireless Unifying Receiver
Style: 2024 Model
I've tried and had to return multiple $100+ keyboards due to irregular F1-F12 or arrow key layouts, dreaded Fn key in the lower-left, mushy key travel feel, etc. I've been using exclusively Logitech keyboards & mice since the 90's, but gave up and tried venturing to other brands like Keychron (had issue with inadvertent key presses when pausing fingers over keys).
But this simple keyboard just gets it right. I didn't even need the bundled mouse since I use Logitech MX Master 2S, but like that I can use the same Logi Unifying Receiver and Options+ software (optional).
There are dedicated keys:
* power on/off colored slider
* play/rewind/ff
* volume mute/down/up
* calculator
* battery level
* 2 user-configurable buttons
* Fn+ F1-F8 are also configurable
The are 3 height levels, built-in mini palm rest (I still use a big keyboard mat beneath), slot for Unifying Receiver and 2 AA under the battery cover.
Minor issue is the batteries clack when using the F5-F12 keys (just below where the batteries are), but I taped a little strip of foam on the inner side of the battery cover to resolve it.
Also great is Logitech MK270, which is more compact, light, and perfect for the road. Both have amazing battery life.
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Reviewed in the United States on September 10, 2025
★★★★★ 5
solid keyboard and mouse, quiet keys
Style: 2024 Model
solid keyboard and mouse, quiet keys
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Reviewed in the United States on June 10, 2026
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