I’ve been thinking quite a bit about LiFePO4 lately, and how, in so many ways, it’s more like a nickel based rechargeable battery (ie, NiMH, Nicad, NiZn) than a lithium ion battery (despite being the latter). All of this just got me wondering. Other than LiFePO4, is there another lithium ion battery that exhibits the same voltage plateau as LiFePO4 (and nickel batteries)? I know that ICR, IMR, and INR all have terminal voltages that drop with state of charge throughout the entire discharge cycle. But I know that there are other lithium ion chemistries out there. Do any behave like LiFePO4, and perhaps have a higher terminal voltage?