I currently have a 200 AH deep cycle battery that I use when I'm not at home and if I had the funds at the moment I'd upgrade to a LiFePo4 in a heartbeat.
200AH deep cycle is 75kg and is best not discharged below 50%. 200AH LiFePo4 is 25 kg, had been discharged to 95% and can be charged at about 5x the speed!
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