If your authorised representative in the EU put your products under his/her own name, then she/he takes over your responsibilities. In this case he/she must have sufficient information on the design and production of the product, as he/she will be assuming the legal responsibility when affixing the CE marking.
Many of the larger inverters come with a built in charger. Typically a 2000 Watt or larger inverter will have a 50 to 100 Amp 3 stage charger. These are much better than the typical RV converter/charger. If you are planning on a more powerful charger anyway, the combo units make sense.
There are many multi-stage RV battery charger options available today. A popular multi-stage Converter-Charger is the Progressive Dynamics 9200 series, which is available with amp outputs from 45 to 80 amps. Iota is another well known brand. Among inverter-chargers, well-known brands include Magnum and Xantrex.