Breakthrough Battery Monitoring Technology For Lead-Acid Batteries

The highly accurate, simple-to-use gauge supports batteries used in mobile and stationary applications like medical instruments, wireless base stations and telecom shelters, e-bikes, inverters and uninterruptible power supplies.

95-percent accurate monitoring for lead acid

Lead-acid batteries typically behave better than lithium chemistries in environments with wide temperature ranges. However, today’s lead-acid battery designs do not accurately measure and report current battery capacity, which often frustrates the end user, and could mean adding more batteries to keep the system adequately charged. The new bq34z110 gauge with Impedance Track technology constantly informs a user about the battery’s state-of-health and state-of-charge and maintains up to a 95-percent accurate capacity measurement for the entire life of the battery. This information also prevents premature shutdown, increasing the longevity of the battery and end-equipment.

Key features and benefits of the bq34z110:

•Industry’s first multi-cell scalable battery gauge to support a wide 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).
•95-percent accurate battery capacity measurement with TI’s Impedance Track proprietary algorithm, which uses current, voltage measurements, temperature and battery characteristics to determine battery state-of-charge, state-of-health and capacity.
•Easy setup configuration with application notes, user guide and bq34z110EVM evaluation module.



Battery management for any battery chemistry

TI provides battery charge management and capacity monitoring integrated circuits that meet the power requirements of any battery chemistry – from the smallest coin-cell to the largest multi-cell battery pack. In addition to the bq34z110 gas gauge, TI’s 10-A bq24650 and bq24450 charger ICs support battery charge management to multi-cell lead-acid batteries. 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.

Availability and pricing

The bq34z110 fuel gauge for lead acid-based batteries is available now in a 14-pin, 5-mm x 6-mm TSSOP package, priced at US$2.30 in quantities of 1,000. The bq34z110EVM is available through TI eStore for US$49.