The newest inverters have incorporated some impressive features that you may use, depending on how far you want to go with integrating the inverter into your onboard electrical system. For example, inverter/chargers are now commonplace, and I would certainly recommend one, especially if you are upgrading to modern batteries and your existing battery charger is more than five or six years old. Of the popular brands in our roundup, we focused on the ProMariner inverter-only devices, but when you look at our comparison chart, “Inverters by the Numbers,” page 84 of our December 2018 issue, you can see that the price differential between its inverter and all the other brands with integrated chargers is such that purchasing a ProMariner charger that will match nicely with these latest-version inverters is a very doable option. ProMariner does offer two slightly older-technology combination units at its online outlet store; these offer both inverter and battery charger in one case. The pure sine wave ProMariner inverter has a 2,000-watt continuous and 5,600-watt peak output rating. The modified sine wave model has a 2,500-watt continuous rating and a 7,000-watt peak rating. They are available with retail prices of $1,495 and $1,149, respectively. With those two units, the charger technology integrated into the units is quite state-of-the-art. The inverter side of the device does not offer the same capability as the inverter-only units in our comparison. So, it really depends upon your specific needs and product availability.