HULKMAN Sigma 5 Battery Trickle Charger, 5A 6V/12V Automatic Smart Car Battery Charger, Battery Maintainer, and Desulfator with Intelligent Interface

I have several smaller Hulkman chargers that I use for motorcycles. I purchased this model as a slightly higher amperage version for our automobiles. It is fantastic - just like the smaller versions. It's great to have charging solutions that are stress-free!

Very ruggedly built and performs beyond expectations, also doesn't drain battery if power source is unplugged.

Very good build quality, sleek and intuitive control panel. Great value and shipping fast with Walmart.

I own the older 2.5 A model and live mine I purchased this one for my brother as a gift very high quality made in USA great charger for any car or 6volt battery .

The Hulkman Sigma 5 has a very nice design, is easy to use, and has a high build quality. I like the large display. All cables are high quality and have a good length. Hulkman appears to use proprietary connectors.

great charger

I'm really liking this slow charger! It's a much better charger than what I had been using. I love the digital display that shows your battery cell count. For the price point it has to be the best slow charger on the market period!!

this works great will buy more

Hulkman works great, so I bought a total of 4 Hulkmans to place on all our powered equipment. Use them on our cars, motorcycles with lithium batteries, and gas golf cart. Maintains all of them with no issues and it knows when I attach them to a lithium battery, automatically. Great product!

These products appear to be used. I have purchased several of these from Amazon and Hulkman and they always come sealed in plastic. These boxes are not sealed and are dirty and beat up. Do better, wal-mart.