A summary of Analog Devices portfolio positioning is shown in the table. The LTC4071 most resembles the LTC4070, with differences including integrated pack protection (low battery disconnect), lower 50mA charge current capability, higher 550nA quiescent current and no LBO output. The low battery disconnect is a critical function required to protect low capacity batteries from damage due to self-discharge. While the LTC4070 can perform a low battery disconnect function with the LBO output and an external PFET, the IC will continue to consume full quiescent current, about 0.5µA, from the battery. Even this battery drain current can damage a low capacity battery overnight.