Simran,<br /><br />The B&D 1093 gets pretty good reviews. One guy over on RV.net hooks four of them onto a hefty bank of batteries to reduce charging time when the generator is running. I have no personal experience with them.<br /><br /> Regular Automatic Battery chargers are not designed to charge batteries while they are powering items. Some can handle cycling loads, others think something is wrong and shut themselves off.<br /><br />RV converters are designed to both power all 12 volt loads while charging the batteries to full, and keeping them there. They are just heavy duty chargers without alligator clips.<br /><br />Inverter chargers do exist. They combine both functions into one unit, capable of powering all 12 volt dc loads and charging the batteries when 120 ac grid power is available, and inverting 12vdc to 120 AC to make grid power. I do not have any experience with these either. The few I saw on that best converter site I linked above are $,$$$.99<br /><br />Even with space at a premium in my Van, I would rather have a separate charger and inverter.<br /><br />The B&D is large and clunky. The PD and Iota's are smaller, you just have to provide your own wiring to the batteries. With 300 A/h of AGM batteries you can really get a high powered Converter/charger, and reduce charging times greatly is that is a concern of yours. The converters handle powering things while the batteries are charging much better than traditional automatic battery chargers.<br /><br /><br />Note that high power converters, charging depleted batteries, especially low resistance AGM batteries, can draw more than a 2000 watt generator can provide. I think you are good to about ~40 amps charging on a 1000 watt generator and ~80 amps on a 2000 watt, so keep this in mind.<br /><br />On the Schumachers, the % is just based on voltage. They are only remotely accurate when first applied to a rested battery. Charge a battery dead battery for 5 minutes, then restart the charger and it will likely say 95% or 100%. Best to ignore this feel good do nothing feature and just look at the voltage. Any charger which gives a percentage display is just making a guess at % based on starting voltage and how the amps are tapering as voltage rises under charge. This is only a ballpark range as all batteries are different in what they accept for a certain voltage.<br /><br />I am glad I did not order the Progressive Dynamics PD9260 last night, A large job I was counting on just turned into a small delayed job.<br /><br /><br /><br /><br /><br />