Review on Deep Cycle Rechargeable Lithium Iron Phosphate Battery Pack - TalentCell LF4021, 12V 12Ah, 12.8V 153.6Wh by Jeremy Adams

These batteries look pretty good, and charge up nicely on the recommended charger. 13.4v is my end-of-charge voltage, and it stayed at that for a full mornings use in an RC model boat. Nice that the voltage does not fade away, and so much lighter than lead-acid. I feel happier using them, compared also to Li-Ion, as they are not so dangerous or likely to burst into flames. I leave them in the boat when recharging, which I would not do if Li-Ion. Hopefully the price will continue to drop, but already are competitive. Weight, level voltage, price and safety all add up to an excellent product !