Smart Battery Box Fits Group 24/27/31 Size Batteries for Boats, Marine,RV,Trolling Motor,Portable Battery Box,12V Marine Case w/ 50 AMP Connectors

If you want a project box to hold additional stuff, this is a great box. I replaced the USB jacks with a Starlink power supply and plan to add a state of charge meter to the top as well. There is enough free space inside that with a G31 battery you have plenty of storage space left in the box, beside the battery.

Great for mobility. Used for trailer winch, lighting & backup power. You can easily attach an inverter for mobile 110vac. Easy to connect a charger or solar panel. Very affordable and adaptable to your specific requirements.

I really like the box BUT the first time I used it with a 100ah litime battery the 30amp fuse on the Anderson 50amp plug blew. I replaced the fuse with a 35amp fuse and it happened again. What's causing this issue?

This box has worked perfectly. I paired it with a 12v lithium to run a portable winch setup. Pulled a 2½ ton car onto my trailer with no issues to the battery or this box. Made connecting the winch easy and great. The battery was a bit small, so I used some thick from to hold it better.

This would be a five star product, except they had to put a ridiculous giant sticker covering one entire side of the box. Not the modern kind made of plastic with nice modern adhesive that peels off easily and cleanly, but paper sticker like we remember from the 1970s with that permanent glue that does not come off without hours of work and bottles of goo-gone. This thing had to be soaked in solvent and scraped off bit by bit over the course of 3 hours. So what was on this very important giant sticker? No, not important safety or usage information; just advertising for the stupid brand that, like most chinese knockoffs, is just a random series of letters from the english alphabet that spells absolutely nothing (OKLPF) and is also, as far as anyone could tell, not an acronym for anything. Also on this ugly giant sticker were false statements like "12 volt battery box" (this box does not have a voltage, because it does not come with a battery-I could have just as easily installed a 6, 24, or 36 volt battery in the box) and "Smart and Portable" (portable, sure, it's a box. Smart, no, this is a plastic box, what's smart about a plastic box). That said, this is the best designed battery box with Anderson connectors, USB, and lighter plug I could find at this price point. So much more refined than most of the competitor. Just a shame about the 3 hours of labor to get rid of the ridiculous unnecessary and unwanted giant advertising sticker.

I used it in our enclosed car trailer. I use the 59amp connectors for a power converter and a small winch. When in the trailer the usb ports are nice to charge a phone when needed. I wish that the on off switch didn’t disconnect the external terminals on the back side. I have to remember to turn it on when I hook the truck up or it won’t charge it.

Do not buy this unless you want to spend the next 10 years scraping the huge sticker off of it. The sticker isn't coming off easy at all. Read some of the other reviews. I tried everything to get it off and now it looks worse than the sticker. The huge sticker is put the box with some type of adhesive that will absolutely not come off. Spend the extra coin and get something different. Trust me!

Great Box for our outboard battery! Nice to all!