myVolts TT03XL laptop battery 11.55V 56Wh 4850mAh

Direct replacement for HP EliteBook and ZBook

The myVolts TT03XL is a new lithium-ion laptop battery built to replace original part numbers HSTNN-DB8K, 932824-2C1, 933322-855 and HSTNN-LB8H. It fits HP EliteBook 850 G5 and G6 as well as ZBook 15U G5 and G6 series notebooks. Buyers who need a different connector layout or a higher capacity pack cannot use this unit.

Steady discharge at 11.55 volts over 56 watt-hours

The cell delivers a consistent 11.55 V output across its rated 56 Wh capacity, avoiding the voltage sag that appears when aged packs are pushed. Rated at 4850 mAh, it maintains usable runtime through typical office workloads without the sharp capacity drop seen in worn originals. The manufacturer states an average service life of 2 to 4 years under normal use.

Match the exact part number before ordering

Compatibility depends on confirming that the original battery carries one of the listed part numbers and that the cable length and connector position match the replacement. The supplier stresses verifying these details on the physical battery inside the chassis rather than relying on the laptop model alone. Installers should read the included manual before fitting the pack.