70 hp photosmart 720 user’s manual
Extending battery life
z Use an optional HP AC adapter or HP Camera Dock when 
unloading pictures to your computer, printing, or connecting 
to the TV.
z Use the optical viewfinder to frame pictures instead of the 
Image Display. Leave the Image Display off when the 
camera is on.
z Turn the camera off during a pause in picture taking.
z Use the Auto Flash setting rather than Flash On or Red-eye 
Reduction.
Rechargeable batteries
Nickel Metal Hydride (NiMH) batteries can be recharged by 
using a battery charger, the HP Camera Dock, or in the 
camera when it is connected to the AC adapter. Some things to 
keep in mind when using NiMH batteries are:
z Always recharge all four NiMH batteries at the same time. 
One low-charged battery will reduce the battery life for all 
four batteries in the camera.
z For NiMH batteries to reach optimal capacity and 
performance, they should first be discharged completely 
and recharged four separate times. 
z After long-term storage of NiMH batteries, recharge them 
before using them again. Battery cells generally discharge 
at about 1 percent per day at room temperature.