Hello, I have installed in my WoMo a new supply battery (Winner SMF 180Ah) which is charged via a) a 100Wp solar module via Steca 1515-solar controller and b) a separation relay 100A when driving via the LiMa (70A) (Plus connected via 16mm2, minus via chassis) At the battery I have an inverter (Sinus, 1500W). Here the case is: the battery is on 12.1V. If I am on the road now about 1 hour, the battery charges to 12.5V. (voltage during driving approx. 13.4V). Then charge ic h two laptops over the inverter (approx. 200Wh). Meanwhile, the battery voltage slowly settles to 11.8V, and then, when I turn off the inverter again, stabilizes to approx.12.0V. What can this be? Battery broken (but both on the inverter and on the charging controller, over which the consumers are connected, have deep discharge protection)? Inverter broken too weak? LiMa too weak (but why is the battery charged to 12.5?) How big can the voltage drop on the B be? to be atterie when switching on a consumer in general? Hair Rising, Robert