Blue Sky Energy SB3000i Solar Boost 30A MPPT Charge Controller with Display, Fully programmable for Lead-Acid or Lithium Batteries. Dual Battery Charge or 30A LVD Load Output

Used this to replace a non-MPPT charge controller so that I could get more power out of a 100W panel. What I would REALLY want is two 100W panels in series (not parallel so that one shaded doesn't affect the other) and then use the MPPT to optimize, but the flexible panels I am using on an RV are 20-22V OCV, and that exceeds their recommended max input. Hopefully the next version will take in up to, say, 60VDC OCV. But still five stars because it never claimed to do that, and is solid and performs as expected.

So far I love this product. I only bought it because it fits my old flush mount controller cut out and for the customizable charge profiles and temperature compensation for my Firefly carbon foam batteries and didn’t think I would see a big boost in charging amperage. I see a BIG boost in charging amperage. Like 30% plus across the board from my old PWM go power controller. Under the best conditions with my old controller I saw around 8 amps. It is not uncommon now to be charging above 12. Awesome product

I was first introduced to this product by my Grandfather. If your like me Grandparents are wise and really know what’s best. I purchased a new RV and the dealer installed 400 watts of solar and a cheap go power charger. I was within the first few uses and realized i needed a better controller. I have had several of the 3000I controllers and after changing this out I can tell you there was a major difference. The product easily gets a 5 star rating. I have on several Instances called the manufacturer to get help designing different systems. The knowledge and willingness to help has been over the top amazing. The customer service I have received from them is way more than 5 stars. Amazing company and great products.

After twenty years the old soler controller stopped working, I needed a replacement. I wanted the same brand, I did not were I was going to find one, I found one on Amazon. This solar controller works well, I still need to figure out how to use some of the new programable options, such as equalize the batteries. this new controller will handle more amps from the solar panels. The down side to it is that the size of the unit is larger (deeper) than the old unit. It won't fit into the wall, the R.V. walls are thin, but I will go to the hardware store and get some wood and screws, and make a frame for it.

This is a major upgrade over my old Go Power PWM controller. This controller allows me to set the bulk, absorption, and float charge voltage rates according to the battery manufacturer's recommendations and also set the time limit in the absorption mode. It also will default back to the bulk rate when necessary. This is my fourth solar controller used in various camping trailers and by far the most efficient. 12V/30A 400W MPPT Solar Boost 3000i Solar Charge Controller SB3000i I have used the controller for the last eight months. I also purchased the wall box (Blue Sky Energy SB2000E Wall mount box, 2.75" Deep, #720-0011-01 Sold by: Unlimited Solar, Inc) for the controller as my trailer wall was not thick enough for a flush mount. It works well also. The only negative from my viewpoint is that now Amazon is selling it for about $20 less than I paid.

I have had four Blue sky controllers and love their products. Little pricey but worth it.

I finally tried to replace my Solar Boost 2000e solar charge controller today with this unit and it does not work, completely dead. I installed it correctly and it never worked at all.

Although the peak charging current was OK (the controller is powered by two 140W panels, charges four golf cart batteries) the unit overheats at currents as low as 15 amps, causing it to shut down until it recovers. My conclusion is that the thermal design is inadequate for its power rating. That said, the unit has not failed to keep the batteries charged so I'll not be returning it.