There's really only one "king of the hill" in portable chargers these days and those are the Victron BlueSmart IP65's (but these can be permanently installed too).
They start at the
7A model and also offer a
10A Model and
15A Model. These are the ONLY
fully custom programmable portable chargers you can buy.
They can literally charge any type of battery including LiFePO4 and they run insanely cool. We charged a 600Ah LifePO4 battery from 0 to 100% SoC and the 7A charger was in bulk for over two straight days. It never once over heated or protected itself by throttling output current. It provided the full 7A for two+ days straight a feat that would have fried most of its competitors..
These are not a one size fits all portable charger like a Guest, NOCO, Battery Tender, Marinco, MinnKota, Schumacher, ProMariner etc. etc. etc.. These are a legit marine charger with a very, very competitive price. Victron is going to do to the portable charger industry just what they did to the solar controller market and that is, own it...
The BlueSmart IP65's can even be used as a power supply (don't even need a battery connected) and feature built in Bluetooth for programming, history, dashboard etc. etc.. A full custom program can even be created and saved for future use, all in less than a minute.
No other company is even coming close to these chargers. When the dust settles the competitors won't even know what hit them. Victron has already done this with solar controllers and literally owns the market in just a matter of a few years.. Why is Victron soooo far ahead of the pack on these chargers? Because they actually listen to their dealers and installers and go back design/offer the necessary features to properly charge batteries rather than forcing an over-priced one-size-fits-all approach to charging.....
A fair comparison to the rest of the portable charger pack would be; the Victron BlueSmart IP65 is Tiger Woods and the rest of the portable charger pack is Mr. Magoo... (grin)