Abstract: Combining a linear-mode single-cell lithium-ion battery charger (MAX1551) with a comparator (MAX9001) and n-channel FET adds a layer of reverse-battery protection that protects a single cell lithium-ion battery charger and battery from damage due to backwards insertion. Maxim > App Notes > Amplifier and Comparator Circuits Battery Management Circuit Protection Keywords: reverse battery protection, lithium-ion battery charger, comparators, n-channel FETs Feb 16, 2011 APPLICATION NOTE 4572 Reverse Battery Charger Protection By:Zeeshawn Shameem, Customer Applications Engineer Abstract:Combining a linear-mode single-cell lithium-ion battery charger (MAX1551) with a comparator (MAX9001) and n- channel FET adds a layer of reverse-battery protection that protects a single cell lithium-ion battery charger and battery from damage due to backwards insertion. A similar version of this article appeared in the March 1, 2007 issue of PET magazine. Many battery powered applications use diodes for reverse batt……