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Texas Instruments offers first power gauge for multi-cell lead-acid battery packs

Wed, 04/17/2013 - 18:36 -- Editor

Texas Instruments has developed its first battery management gas gauge for multi-cell lead-acid battery packs.

The bq34z110 gauge uses an impedance tracking for up to a 95% accurate capacity measurement for the entire life of the battery.

The Impedance Track proprietary algorithm uses current, voltage measurements, temperature and battery characteristics to determine battery state-of-charge, state-of-health and capacity.

The gauge supports a range of lead acid batteries (4 V to 64 V), including large capacity batteries (1 Ahr to 65 Ahr and higher) and high-current applications (0 A to 32 A and higher).

TI also introduced the bq34z100 lithium-based multi-chemistry, multi-cell battery gas gauge, which supports a wide range of lithium-ion and lithium iron phosphate chemistries in 1- to 16-cell batteries.

Lead-acid batteries typically behave better than lithium chemistries in environments with wide temperature ranges, but lead-acid battery designs do not accurately measure and report current battery capacity.