Why does the HQd meter only show 90% battery life when charged NiMH batteries are installed?

Document ID

Document ID TE6807

Published Date

Published Date 27/05/2017
Question
Why does the HQd meter only show 90% battery life when charged NiMH batteries are installed?
Summary
HQd meter displays 90% battery life with charged NiMH rechargeable batteries
Answer
When using nickel metal hydride (NiMH) rechargeable batteries, the battery icon will not indicate a full charge after freshly charged batteries have been inserted. NiMH batteries are 1.2 V versus 1.5 V for alkaline batteries. Even though the icon does not indicate complete charge, 2300 mAH NiMH batteries will achieve 90% of instrument operation lifetime (before recharge) versus new alkaline batteries.