BQ25175 Standalone 1-Cell Linear Battery Charger Texas Instruments BQ25175 Standalone 1-Cell 800mA Linear Battery Charger has an integrated design ideal for 1-cell Li-Ion and Li-Poly batteries. The BQ25175 offers a single power output that charges the battery. The system load can be placed in parallel with the battery, as long as the average system load does not prevent the battery from charging fully within the safety timer duration. When the system load is placed in parallel with the battery, the charge current is shared between the system and the battery.