A friendly hello to everyone! The decision between a LiFePo4 12V 100 Ah battery or 2x Optima Bluetop 75Ah is pending. They are original equipment, because apart from the starter battery there is no on-board power technology. The battery’s should be in my VW T6 as on-board power supply, which is everyday vehicle and which I want to use as a camper at the same time. In the forum are unfortunately only older contributions to LiFePo, which are partly very critical regarding the operating conditions and charging requirements. It is true that today’s better/more tolerant/more powerful than 3 – 4 years ago. They are more affordable than they were then. What are the characteristics and conditions of use, so that the LiFePo4 in € per Ah taken over the lifetime are advantageous compared to the Optima’s? And in the behavior in the daily camper use? What are your findings and experiences about/with current LiFePo4? My superficial comparison: For LiFePo4 speak * the weight with approx.14-15 kg, and * the removable capacity with approx. 80% corresponding to 80Ah. There are offers between 600€/Ebay with BMS and 1600€/Victron with BMS and battery monitor. Yes, it is even more expensive, but does it have to be? Optima 2x75Ah * is with 50% removable capa corresponding to 75Ah also not bad. * The weight of 2×27,5 is still acceptable. * The batteries are significantly cheaper. With 400€ for both, BMS is not necessary, battery monitor is added (+200€?). * An optional extension by a 3rd battery gleic hen types is financially easier than LiFePo4, but it is difficult to weigh (82.5 KG) and is probably more complex in terms of control technology, since the old batteries have already aged a few cycles. If the price alone would decide, it would be Optima. On 40Kg more it doesn’t matter to me, and the two batteries I get under. But the robustness in handling is also important to me that I don’t always have to worry about. What about LiFePo4? Can you also use the cheaper LiFeP o4 trust? Experience shows – who buys cheaply etc.. What guaranteed properties should be taken into account? How secure are the information in the data sheets? Why do you hardly see C values, such as C10, C20? Now I am very curious – thank you for your contributions! Paul