There was one caisson for each artillery piece in a battery. The process is analogous to the creation and exhaustion of a battery. The camera weighs in at 890 grams loaded with a battery. The warrant stemed from a battery charge. Poland hosts training rotations of a battery of U.S. Patriot launchers. The stored water acts as a battery. Hydrometers are used to calculate the specific gravity of a battery. He or she is still liable for a battery. In 2015 researchers announced an SMFC application that extracts energy and charges a battery. Alginic acid is used as a stable component of a battery anode. It is the first time urea has been used in a battery. The plan was to mount a battery there. This led many armies to use an elevation angle calculated in a battery command post. Zero-center ammeters are also commonly placed in series with a battery. Electric burr grinders are powered by electricity from a battery or mains supply.